-
Jiancheng Yang25/11/2024, 09:30Invited
-
Carlos Munoz Camacho25/11/2024, 10:00Invited
Deeply Virtual Compton Scattering (DVCS) is the easiest reaction that accesses the Generalized Parton Distributions (GPDs) of the nucleon. GPDs offer the exciting possibility of mapping the 3-D internal structure of protons and neutrons by providing a transverse image of the constituents as a function of their longitudinal momentum. A vigorous experimental program is currently pursued at...
Go to contribution page -
Prof. Marco Radici (INFN - Sezione di Pavia)25/11/2024, 11:00Invited
Transverse-Momentum dependent Distributions (TMDs) are a key tool to understand the internal partonic 3D structure of hadrons in momentum space. I will discuss some recent TMD extractions for quarks in the Nucleon, whose analyses are reaching a theoretical precision comparable to collinear Parton Distribution Functions (PDFs), and I will show the potential impact of future electron-ion...
Go to contribution page -
Shunzo Kumano (Japan Women's University / KEK)25/11/2024, 11:30Invited
Masses and spins of hadrons are fundamental quantities in physics; however, their origins are not understood yet and their investigations are major purposes of building electron-ion colliders in 2030's. Both of them can be investigated by generalized parton distributions (GPDs). The $t$-channel or spacelike ($s$-channel or timelike) GPDs are studied by deeply virtual Compton scattering...
Go to contribution page -
Prof. Jian Zhou (Shandong University)25/11/2024, 12:00Invited
We propose to detect signals from quark orbital angular momentum (OAM) through exclusive π production in electron-(longitudinally-polarized) proton collisions. Our analysis demonstrates that the sin 2ϕ azimuthal angular correlation between the transverse momentum of the scattered electron and the recoil proton serves as a sensitive probe of quark OAM. Additionally, we present a numerical...
Go to contribution page -
Prof. Miguel Angel Martin Contreras (University of South China)25/11/2024, 14:00Oral
After 60 years of quantum chromodynamics (QCD) and the quark constituent model, new experimental evidence challenges existing descriptions of hadronic states. This work introduces a holographic approach to describing exotic vector states emerging in heavy quarkonium. We propose a WKB-based approach inspired by diquark Regge trajectories to infer the structure of the holographic confining...
Go to contribution page -
Jun Hua (South China Normal University)25/11/2024, 14:00Invited
The light cone distribution of light mesons, encompassing both one-dimensional light cone distribution amplitudes (LCDAs) and three-dimensional transverse momentum dependent wave functions (TMDWFs), provides insight into the inner structure of hadrons. These distributions are crucial inputs for perturbative calculations in hard exclusive processes. In this talk, I will present recent...
Go to contribution page -
Jarah Evslin (Institute of Modern Physics, CAS)25/11/2024, 14:00Oral
In the instant-time formulation of quantum field theory, solitons correspond to states. We present a new formalism for treating these states. The formalism is much simpler and easier to use than previous formalisms, making many previously impractical problems now practical. We have used it to calculate soliton masses, spectra, form factors, and scattering amplitudes, as well as the decay...
Go to contribution page -
Qi-An Zhang (Beihang University)25/11/2024, 14:30Invited
We develop an new approach for calculating heavy quark effective theory (HQET) light-cone distribution amplitudes (LCDAs) by employing a sequential effective theory methodology. The theoretical foundation of the framework is established, elucidating how the quasi distribution amplitudes (quasi DAs) with three scales can be utilized to compute HQET LCDAs. We provide theoretical support for...
Go to contribution page -
Chao Shi (Nanjing University of Aeronautics and Astronautics)25/11/2024, 14:30Oral
In this talk I will discuss some recent progress in the study of photon and flavor asymmetric pseudoscalar meson light front wave functions made within DSEs approach.
Go to contribution page -
João Pacheco de Melo (LFTC - Universidade Cruzeiro do Sul - UNICID)25/11/2024, 14:30Oral
The off-shell pion electromagnetic form factors are explored
Go to contribution page
using phenomenological relativistic constituent quark models. These composite pion models feature
massive, structureless blue quark and antiquark, allowing the computation of microscopic form factors
via the Mandelstam approach. Each model relies on two parameters which are determined by closely reproducing the pion decay... -
Yan-Qing Zhao (HaiNan Normal University)25/11/2024, 15:00Oral
We employ the non-perturbative gauge/gravity duality approach to study the phase structure of Quantum Chromodynamics (QCD) under finite temperature, baryon chemical potential, and rotational effects. Our models include the SU(3) pure gluon system, 2-flavor QCD, and 2+1-flavor QCD, all calibrated with the latest lattice data to analyze their thermodynamic properties and predict the location of...
Go to contribution page -
Dingyu Shao (Fudan University)25/11/2024, 15:00Oral
We apply the joint threshold and transverse momentum dependent (TMD)
Go to contribution page
factorization theorem to introduce new threshold-TMD distribution functions, including threshold-TMD parton distribution functions (PDFs) and fragmentation functions (FFs). We apply Soft-Collinear Effective Theory and renormalization group methods to perform QCD evolution for both threshold-TMD PDFs and FFs. We show the... -
Filippo Fernetti25/11/2024, 15:00
-
Bin Yan (IHEP)25/11/2024, 16:00Oral
We propose a novel method to probe light-quark dipole moments by examining the azimuthal asymmetries between a collinear pair of hadrons in semi-inclusive deep inelastic lepton scattering off an unpolarized proton target at the Electron-Ion Collider. These asymmetries provide a means to observe transversely polarized quarks, which arise exclusively from the interference between the dipole and...
Go to contribution page -
Mitsutoshi Fujita (University of South China)25/11/2024, 16:00Oral
We compute holographic entanglement entropy (EE) and the renormalized EE in AdS solitons with gauge potential for various dimensions. The renormalized EE is a cutoff-independent universal component of EE. Via Kaluza-Klein compactification of S1 and considering the low-energy regime, we deduce the (d−1)-dimensional renormalized EE from the odd-dimensional counterpart. This corresponds to the...
Go to contribution page -
申 方 (复旦大学)25/11/2024, 16:00Oral
In this study, we explore the azimuthal angle decorrelation of lepton-jet pairs in e-p and e-A collisions as a means for precision measurements of the three-dimensional structure of bound and free nucleons. Utilizing soft-collinear effective theory, we perform the first-ever resummation of this process in e-p collisions at NNLL accuracy using a recoil-free jet axis. Our results are validated...
Go to contribution page -
志福 邓 (香港中文大学 深圳)25/11/2024, 16:20Oral
In large-momentum effective theory (LaMET), the transverse-momentum-dependent (TMD) light-front wave functions and soft functions can be extracted from the simulation of a four-quark form factor and equal-time correlation functions. In this work, using expansion by regions we provide a one-loop proof of TMD factorization of the form factor. For the one-loop validation, we also present a...
Go to contribution page -
ZongYang Lu (Shandong University)25/11/2024, 16:30Oral
As the simplest quark-antiquark systems, pions and kaons are pseudo Nambu-Goldstone bosons closely related to the spontaneous symmetry breaking of the strong interaction. The study of their form factors and parton distribution functions is not only key to understanding their internal structures, but also tied to the mechanism of Emergent Hadron Mass, one of the mass generation mechanisms in...
Go to contribution page -
Tianyin Li (South China Normal University)25/11/2024, 16:30Oral
Parton fragmentation functions (FFs) are indispensable for understanding processes of hadron production ubiquitously existing in high-energy collisions, but their first principle determination has never been realized due to the insurmountable difficulties in encoding their operator definition using traditional lattice methodology. We propose a framework that makes a first step for evaluating...
Go to contribution page -
Hongxin Dong (NNU)25/11/2024, 16:40Oral
We will present a global analysis of Sivers function, transversity distribution functions and Collins fragmentation functions within TMD factorization. This analysis encompasses the latest data sets from semi-inclusive deep inelastic scattering, Drell-Yan, and $W^{\pm}/Z$-boson production as recently reported by the COMPASS and STAR Collaborations. Upon integrating this new data into our...
Go to contribution page -
Dr Yangguang Yang (Institute of Modern Physics, Chinese Academy of Sciences)25/11/2024, 16:50Oral
Quantum nonlocality, a fundamental feature of quantum mechanics, is frequently associated with the experimental violation of Bell-Clauser-Horne (Bell-CH) inequalities. We present a set of novel methods for the rearrangement and linear inequalities to derive a broad class of Bell-CH inequalities, which can be violated by particular quantum-entangled states. The rapid advancements in Quantum...
Go to contribution page -
Yajin Zhou (Shandong University)25/11/2024, 16:50Oral
As Fermi had realized 100 years ago (in 1924), the electromagnetic field inspired by fast moving charged particles can be treated as photon flux, i.e, equivalent photon approximation (EPA). The EPA photons are linearly polarized, which can be used to probe the nucleus 3D structure. We studied the azimuthal asymmetries induced by the linearly polarized photons in exclusive $\rho^0$ and...
Go to contribution page -
Eric Andreas Vivoda (Department of Physics, Faculty of Science, University of Zagreb), Sanjin Benic (University of Zagreb)25/11/2024, 17:00Oral
Nuclear dependence of Single Transverse Spin Asymmetry (STSA) in $p^↑ p$ and $p^↑ A$ collisions is still a standing mystery. Recent results by PHENIX ($A^{-1/3}$) [1] and STAR ($A^0$) [2] collaborations posses strikingly different nuclear scaling which suggest that the dominant underlying mechanism for STSA may vary with the kinematics of the collision. In the forward regime, where the gluon...
Go to contribution page -
Xiaolin Li (Beijing Normal University)25/11/2024, 17:10Oral
We present an innovative approach to the linearly polarized gluons confined inside the unpolarized nucleon in lepton-nucleon scattering. Our method analyzes the correlation of energy flows at azimuthal separations $\phi$.
Go to contribution page
The interference of the spinning gluon with both positive and negative helicities translates into a $\cos(2\phi)$ asymmetry imprinted on the detector. Unlike the... -
Yair Mulian (Institute of Modern Physics)25/11/2024, 17:10Oral
Using the CGC effective theory together with the hybrid factorisation in light-cone formalism, we study forward photon+jet production in proton-nucleus collisions beyond leading order. We first compute the "real" next-to-leading order (NLO) corrections, i.e. the radiative corrections associated with a three-parton final state, out of which only two are being measured. Then we move to the...
Go to contribution page -
一平 刘 (近代物理所)25/11/2024, 17:20Poster
We solve the nucleon's wave functions as eigenstates of the light-front quantum chromodynamics (QCD) Hamiltonian for the first time, using a fully relativistic and nonperturbative approach based on light-front quantization, without an explicit confining potential. These eigenstates are determined for the three-quark, three-quark-gluon, and three-quark-quark-antiquark Fock sectors, making them...
Go to contribution page -
硕 林 (中国科学技术大学)25/11/2024, 17:30Oral
Elastic light-by-light (LbL) scattering, one of the most fascinating processes in the Standard Model (SM), has recently been observed in the ultraperipheral collisions (UPCs) of relativistic heavy ions in the Atlas and CMS experiments at the Large Hadron Collider (LHC). However, the measured LbL cross section exhibits noticeable tension with the SM predictions based on the collinear...
Go to contribution page -
Wanchen Li (Fudan University)25/11/2024, 17:30Oral
We fit the structure function $F_2$ data from HERA using the Balitsky-Kovchegov (BK) equation. The non-linear equation for the unintegrated gluon density is solved, also incorporating resummations due to the DGLAP evolution and kinematical constraints. Parallel computation on GPUs is employed to handle the intensive calculations, achieving a good fit to the structure function with $\chi^2 \sim...
Go to contribution page -
Muhammad Farhan Taseer (for the STAR Collaboration) (Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China)25/11/2024, 17:50Oral
The presence of ultra-strong electromagnetic (EM) fields can give rise to various important phenomena in heavy ion collisions (HIC). During the early stages of HI collisions an ultra-strong EM field ($B \approx 10^{18}$ Gauss) is expected to be generated, which can have profound implications for QCD phase transitions as well as chiral symmetry restoration. The charge-dependent directed flow...
Go to contribution page -
Yi Chen (University of Science and Technology of China, China)25/11/2024, 17:50Oral
Relativistic full weak-neutral axial-vector four-current distributions inside a general spin-$\frac{1}{2}$ system are systematically studied for the first time. We show in particular that the slope of the axial form factor $G_A(Q^2)$ in the forward limit -- conventionally denoted as $R^2_A$ in the literature -- does not represent the three-dimensional mean-square axial radius in the Breit...
Go to contribution page -
James Vary26/11/2024, 09:00Invited
-
Stanislaw Glazek (University of Warsaw)26/11/2024, 09:30Invited
The canonical Hamiltonian of QCD in the front form involves severe small-$x$ divergences that impede access to the logarithmically scale-dependent Hamiltonians for quarks and gluons. We propose a method for circumventing these divergences, thus opening a pathway for the systematic computation of the Hamiltonians using the renormalization group procedure for effective particles (RGPEP). Our...
Go to contribution page -
V.A. Karmanov (Lebedev Physical Institute of Russian Academy of Sciences, Moscow)26/11/2024, 10:00Invited
Light-front (LF) wave function of a three-fermion system, forming a bound state with the total angular momentum $J=\frac{1}{2}$, is determined, in general, by 16 invariant components - in coincidence with number of combinations $2\times 2\times2\times2=16$, which spin projections of three constituents and their bound state are forming. Parity conservation, in contrast to a two-fermion system,...
Go to contribution page -
Craig Roberts26/11/2024, 11:00Invited
-
Tiejiun Hou26/11/2024, 11:30
-
Tianbo Liu26/11/2024, 12:00
-
Sanjin Benic (University of Zagreb)26/11/2024, 14:00Invited
Exclusive $\chi_c$ production is sensitive to the C-odd colorless tri-gluon correlation in the $t$-channel - the long sought Odderon. While a non-perturbative C-odd compound has been recently discovered through elastic $pp$ collisions [1], however, Odderon escaped the direct detections at HERA. At the EIC and the EIcC, the high luminosity can counteract the feeble Odderon amplitude. Using the...
Go to contribution page -
Prof. Dipankar Chakrabarti (Indian Institute of Technology Kanpur)26/11/2024, 14:00Oral
Though the quark distributions are are studied in different models, the gluon distributions inside the proton are not studied extensively. To understand the three dimensional structure of proton and the spin and angular momentum contributions of different partons, it is important to evaluate the gluon GPDs and TMDs. We will define a simple spectator model to study the gluon distributions in...
Go to contribution page -
Kamil Serafin (Tufts University)26/11/2024, 14:00Invited
The most challenging aspect of Quantum Chromodynamics (QCD) is perhaps the complexity of calculations required to obtain precise results. For example, ab initio Lattice QCD calculations demand expensive computations on large supercomputers. Yet, existing machines are still not sufficiently powerful to fully address many interesting problems such as structure functions of hadrons, or...
Go to contribution page -
Jani Penttala (UCLA)26/11/2024, 14:30Invited
The gluon density in nucleons has been observed to increase rapidly with energy, which would eventually violate unitarity. At high energies, however, nonlinear effects in QCD start to become important, slowing down the evolution of the gluon density and hence giving rise to gluon saturation. To study this saturation region of QCD one possibility is to look at diffractive processes which are...
Go to contribution page -
Maria Gomez Rocha26/11/2024, 14:30
-
Wei Chen (Sun Yat-Sen University)26/11/2024, 14:30Oral
Glueballs are colorless bound states of gluons as they have self-couplings. The existence of glueballs are very distinctive predictions of QCD. In this talk, I will briefly review recent experimental and theoretical progresses on the researches of glueballs. Especially, I will introduce the latest QCD sum rule calculations of the mass spectroscopy for the two-gluon and three-gluon glueballs.
Go to contribution page -
Mr Sudeep Saha (Indian Institute of Technology Bombay, India)26/11/2024, 15:00Oral
We investigate different decompositions of angular momentum in QCD for a relativistic spin 1/2 composite state, specifically a quark dressed with a gluon. We employ light-front Hamiltonian perturbation theory developed in the light-front gauge and utilize a two-component framework that eliminates constrained degrees of freedom. Our investigation extends to various decompositions of angular...
Go to contribution page -
Xiangpeng Wang26/11/2024, 15:00Invited
-
Meijian Li (IGFAE)26/11/2024, 15:00Invited
Using a non-perturbative light-front Hamiltonian approach, we investigate the scattering and gluon emission of dressed quark states inside a SU(3) colored background field. We consider the scenario in deep inelastic scattering and in heavy ion collisions, where the quark originates from far outside the background field and is described by the light-front wavefunction of the QCD eigenstate in...
Go to contribution page -
Yao Ji (The Chinese University of Hong Kong, Shenzhen)26/11/2024, 16:00Oral
In this talk, I will present our calculation of kinematic power corrections $t/Q^2$ and $m^2/Q^2$ to the amplitude of deeply-virtual Compton scattering to the twist-six accuracy on a nucleon target.
Phenomenologically, this result reduces an important source of uncertainties in the QCD predictions for intermediate momentum transfers $Q^2 \sim 1 - 10 ~{\rm GeV}^2$, accessible in the existing...
Go to contribution page -
Hai-Tao Shu (CCNU)26/11/2024, 16:00Oral
In this talk I will present the results of lattice calculation of the quark helicity PDFs of proton.
Go to contribution page -
Sreeraj Nair (The Institute of Modern Physics (IMP) of the Chinese Academy of Sciences)26/11/2024, 16:00Oral
We compute the gravitational form factors (GFFs) and study their applications for the description of the mechanical properties such as the pressure, shear force distributions, and the mechanical radius of the proton from its light-front wave functions (LFWFs) based on basis light-front quantization (BLFQ). We find acceptable agreement between our BLFQ computations and the lattice QCD for the...
Go to contribution page -
Tianyang Hu (Institute of Modern Physics, CAS)26/11/2024, 16:30Oral
We investigate the internal stress of charmonium using the recently derived light-front wave function representation. We employ three “good components” of the energy-momentum tensor, $T^{++}$, $T^{+-}$, and $T^{12}$, to extract the gravitational form factors. The obtained form factors satisfy the known constraints and are used to derive the physical distributions of the system. We discover...
Go to contribution page -
Sangyeong Son (Kyungpook National University)26/11/2024, 16:30Oral
The non-diagonal hard exclusive reactions admitting a description in terms of generalized parton distributions (GPDs) with transition $N\to\Delta, N^*$ provide insight into the internal dynamics of hadron excitations. A unified description of these reactions in the complete resonance region can be performed by introducing the concept of $N \to N \pi$ transition GPDs.
Go to contribution page
In this study, we... -
Zhuoyi Pang (The Chinese University of HongKong, ShenZhen)26/11/2024, 16:30Oral
We propose two approaches for extracting the total gluon helicity contribution to proton spin from lattice QCD, one from local operator matrix elements in a fixed gauge accessible on lattice with feasible renormalization, and the other from gauge-invariant nonlocal gluon correlators. Neither of these approaches requires a matching procedure when converted to the MS scheme. Our proposal...
Go to contribution page -
Xianghui Cao (University of Science and Technology of China)26/11/2024, 16:50Oral
We investigate the gravitational form factors of a strongly coupled scalar theory in the light-front Hamiltonian approach. The theory can be used to mimic the interaction between the nucleon and the pion. We renormalize the energy-momentum tensor with a Fock sector-dependent scheme. We futher analyze the hadron matrix elements of the energy-momentum tensor and identify three “good currents” to...
Go to contribution page -
Dr Zi-Yan Yang26/11/2024, 16:50Oral
The observation of the $T_{c\bar{s}}(2900)$ indicates the potential existence of strange double charm pentaquarks based on the heavy antidiquark symmetry. We systematically study
Go to contribution page
the mass spectra of strange double charm pentaquarks with strangeness $S=-1$ in both molecular and compact structures for quantum numbers $J^{P}=1/2^{-}$, $3/2^{-}$, $5/2^{-}$. By constructing the interpolating... -
Bheemsehan Gurjar (IIT Kanpur)26/11/2024, 16:50Oral
We determine the mass spectroscopy and diffractive cross-section of ρ and ϕ vector meson by solving the holographic light-front Schrodinger equation along with the ’t Hooft equation of (1+1)-dimensional QCD in the large Nc limit. In order to obtained the diffractive cross-sections, we utilized the holographic LFWFs in conjunction with the color glass condensate dipole cross-section. Our...
Go to contribution page -
Lingdi Meng (Institute of Modern Physics, Chinese Academy of Sciences)26/11/2024, 17:10Invited
Within Basis light-front Quantization framework, we obtain the masses comparable to experiment and the light-front wave functions of $\Lambda_b$ and its isospin triplet baryons $\Sigma_b^+$, $\Sigma_b^0$ and $\Sigma_b^-$. Our prediction of their electromagnetic properties is in agreement with other theoretical calculations. Meanwhile their parton distribution functions (PDFs) are obtained...
Go to contribution page -
Baiyang Zhang (河南大学)26/11/2024, 17:10Oral
The $SU(N)$ Yang-Mills theory compactified on $\mathbb{R}^3 \times \mathbb{S}^1_L$ with small $L$ has many merits, for example the long range effective theory is weakly coupled and adopts rich topological structures, making it semi-classically solvable.
Go to contribution page
Due to the $SU(N) \to U(1)^{N-1}$ symmetry breaking by gauge holonomy, the low-energy effective theory can be described in terms of unbroken... -
Mr Hiwa Ahmed (University of Chinese Academy of Scineces)26/11/2024, 17:10Oral
Semileptonic decays involve the transition of a heavy meson (such as B or D) to a lighter meson via the exchange of a W boson. Understanding the form factors governing these transitions is essential for precision measurements of CKM matrix elements and testing the Standard Model. The form factors are manifestations of nonperturbative QCD processes, and various phenomenological models have been...
Go to contribution page -
Hailong Fu (ITP)26/11/2024, 17:30Oral
Numerous low-lying excited hadrons can only decay into final states containing one or more photons, making them challenging to detect in experiments conducted at the Large Hadron Collider. Examples of such particles include the bottom partners of the $D^∗_ {s0}(2317)$ and $D_{s1}(2460)$, whose masses have been accurately predicted through heavy quark flavor symmetry and lattice calculations....
Go to contribution page -
Wenyu Zhang (University of Science and Technology of China)26/11/2024, 17:30Oral
We present the first systematic investigation of the Lorentz covariance of the charge form factor for a strongly coupled scalar theory in (3+1)-dimensions. Our results are based on the non-perturbative solution of the scalar Yukawa theory with a Fock sector expansion including up to thee-particles (one mock nucleon plus two mock pions or two mock nucleons plus one mock anti-nucleon). The...
Go to contribution page -
Tiancai Peng (Lanzhou university)26/11/2024, 17:30Oral
Within the basis light-front quantization framework, we systematically investigate the unpolarized and longitudinally polarized double parton distributions (DPDs) of quarks inside the proton. We utilize the light-front wave functions of the proton derived in the valence sector from a Hamiltonian quantized on the light-front. Our current analysis yields significant correlations of the quarks'...
Go to contribution page -
Yihan Duan (University of Science and Technology of China)26/11/2024, 17:50Oral
We demonstrate, in the context of a scalar version of the chiral effective field theory, that the multi-sea quark contribution to the nucleon is significant and highly non-trivial in sharp contrast to the prediction of perturbation theory. The non-perturbative calculation is performed in the Fock sector dependent renormalization scheme on the light front, in which the non-perturbative...
Go to contribution page -
Shaoyang Jia (Argonne National Laboratory)26/11/2024, 17:50Oral
We propose a method to solve for the structure of relativistic 2-body bound states from Bethe--Salpeter equations (BSEs) in Minkowski space. Particularly after introducing both the Källén--Lehmann spectral representation of dressed propagators and the Nakanishi integral representation of the Bethe--Salpeter amplitudes, the BSE for scalar bound states of scalar constituents is converted into...
Go to contribution page -
Jianing Li (Central China Normal University)26/11/2024, 17:50Oral
The transport properties of dense nucleon matter at low temperatures are important but have rarely been studied in nuclear physics and astrophysics. In this work, we present a primary study of both bulk and shear viscosities of dense nucleon matter within the framework of the Boltzmann equation. To describe the static properties of nucleon matter, we apply the Walecka model in the mean-field...
Go to contribution page -
Yangheng Zheng27/11/2024, 09:00Invited
-
Xiao-Rui Lyu (University of Chinese Academy of Sciences)27/11/2024, 09:30Invited
The BESIII experiment locates at the BEPCII e^+ e^- collider in Beijing, China, running in a center-of-mass energy range from 1.8 GeV to 4.95 GeV. After 16 years of successful running of the experiment since 2009, BESIII has accumulated a large statistics of electron-positron annihilation sample, such as data set at J/ψ, ψ(2S) and ψ(3770) peaks, and fine scan data between 1.8 GeV and 4.95 GeV....
Go to contribution page -
Yuxiang Zhao27/11/2024, 10:00
-
Zuotang Liang27/11/2024, 11:00
-
Fengkun Guo27/11/2024, 11:30Invited
-
Hengtong Ding27/11/2024, 12:00
-
Minghui Ding (Nanjing University)27/11/2024, 14:00Invited
As the theory of quantum chromodynamics has unfolded, the pion has come to be understood as Nature’s most fundamental Nambu-Goldstone boson. It is attached to chiral symmetry, which is dynamically broken, quite probably as a corollary of emergence of hadron mass. Continuum Schwinger function methods are well suited to tackling the pion. This presentation describes the theoretical developments...
Go to contribution page -
Chandan Mondal27/11/2024, 14:00
-
Qintao Song27/11/2024, 14:00Invited
We study the energy-momentum tensor of spin-0 and spin-1/2 hadrons in momentum space. We parametrize this object in terms of so-called gravitational transverse-momentum distributions, and we identify in the quark sector the relations between the latter and the usual transverse-momentum distributions. Focusing on particular components of the energy-momentum tensor, we study momentum densities,...
Go to contribution page -
Shan Cheng (Hunan University)27/11/2024, 14:30Invited
As the lightest and simplest hadron composited by valence quarks, pion meson and the involved channels are usually treated as the benchmarks of measurements, which requires the theoretical calculations based on the knowledge of its inner structure to achieve at a high accuracy. How precise do we know the pion meson light-cone distribution amplitudes (LCDAs) ? In this talk I will report the...
Go to contribution page -
Kirill Semenov-Tyan-Shanskiy (Kyungpook National University, Daegu, Korea)27/11/2024, 14:30Invited
Transition GPDs describe matrix elements of nonlocal partonic QCD operators between ground and excited baryon states and provide new tools for quantifying and interpreting the structure of baryon resonances in QCD.
Go to contribution page
We consider a description of non-diagonal Deeply Virtual Compton Scattering process involving a transition between anucleon and a nucleon resonance in the pion-nucleon system... -
Satvir Kaur27/11/2024, 14:30
-
Ho-Yeon Won (CPHT, CNRS, École Polytechnique)27/11/2024, 15:00Oral
We study the spatial distributions of the energy-momentum tensor (EMT) for transversely polarized nucleons in the elastic frame (EF), a general reference frame that bridges the Breit frame (rest frame) and the infinite momentum frame (IMF). As the longitudinal momentum, $P_{z}$, increases, the spin-dependent contributions are induced in the EF energy and EF longitudinal normal force...
Go to contribution page -
Yu Jia27/11/2024, 15:00Oral
The meson's boundstate equation in two dimensional QCD under large Nc limit (QCD2) are exactly solvable in both light-front quantization and equal time quantization. In the meanwhile, QCD2 captures some key features of realistic QCD in four dimension, such as color confinement, nonzero quark condensate. QCD2 become an ideal theoretical laboratory for...
Go to contribution page -
Jianhui Zhang (CUHK-Shenzhen)27/11/2024, 15:00Oral
In the past few years, there has been rapid progress in both theoretical developments and lattice calculations of the partonic structure of hadrons. In this talk, I will present some recent results aimed at achieving precise hadron tomography using lattice QCD.
Go to contribution page -
James Vary27/11/2024, 19:30
Video recording: What do we know that we don't know?
Go to contribution page -
Zhi HU28/11/2024, 09:00Invited
The three-dimensional internal structures of the proton play a central role in the upcoming electron-ion colliders, among which TMDs have received increasing concentrations. They depict the proton in three-dimensional momentum space, and, via TMD factorization and evolution, can be connected to the cross-section of SIDIS process. In this talk, we start with an effective Hamiltonian to...
Go to contribution page -
Dr Poonam Choudhary (IIT Bombay)28/11/2024, 09:30Invited
I will present a light-front spectator model for the proton that incorporates the gluonic degree of freedom. The model is based on light-front wave functions modeled from the soft-wall anti–de Sitter/QCD prediction, which allows us to explore the gluonic structure within the proton. Using this model, we have successfully predicted key results for gluon transverse momentum distributions (TMDs)...
Go to contribution page -
Wenyang Qian (University of Santiago de Compostela)28/11/2024, 10:00Invited
In this work, we demonstrate quantum advantage for simulating dynamics of multiple particles in the (3+1)-d QCD Hamiltonian on the light front, especially in the high-energy physics phenomena of an incoming quark jet or gluon jet scattered on the nuclear medium. Using quantum simulation with direct encoding, we provide an universal framework to simulate jet particles, and it is efficient in...
Go to contribution page -
Chueng-Ryong Ji (North Carolina State University)28/11/2024, 11:00Invited
I will present a mass gap solution of the 1+1D QCD in the large Nc limit known as the ‘tHooft model to discuss a link between QCD and the Light-Front Quark Model (LFQM). I will illuminate the interpolation between the instant form dynamics and the light-front dynamics and discuss its utility in the computation of the parton distribution function (PDF). I will then illustrate the...
Go to contribution page -
Hongxi Xing28/11/2024, 11:30
-
Prof. Igor V. Anikin (JINR, Dubna & IMP, Lanzhou)28/11/2024, 12:00Invited
We introduce and explore a new type of $k_\perp$-dependent functions. The existence of this kind of TMDs has been stemmed from the factorization theorem and they are initiated by the interactions encoded in the corresponding correlators. In contrast to the well-known transverse momentum dependentfunction, the new functions can be associated with the collective alignment of quark spin vectors....
Go to contribution page -
Wayne Polyzou (University of Iowa)29/11/2024, 09:00Invited
Light-front quantum mechanics is an alternative to light-front quantum
Go to contribution page
field theory for modeling strongly interacting systems at relativistic
energies. The advantages are that (1) rotational covariance is exact,
so there are no problems identifying states of a given spin or
applying arbitrary Poincar\'e transformations to these states (2) it
is possible to construct realistic models of... -
Prof. Xiaohui Liu (Beijing Normal University)29/11/2024, 09:30Oral
We introduce the concept of the nucleon energy correlators, a set of novel objects that encode the microscopic details of a nucleon, such as the parton angular distribution in a nucleon, the collinear splitting to all orders, as well as the internal transverse dynamics of the nucleon.
Go to contribution page -
Prof. Tobias Frederico (Instituto Tecnologico de Aeronautica)29/11/2024, 10:00Invited
I will review the application of few-body methods to explore the structure of light hadrons in Minkowski space. The description of the nucleon and pion are based on the solution of the Bethe-Salpeter equation in Minkowski space built with phenomenological kernels. For the proton, we will show results obtained with the projection onto the light-front of the Faddeev-Bethe-Salpeter equation,...
Go to contribution page -
Defu Hou (CCNU)29/11/2024, 11:00Oral
We develop a general framework for studying the spin alignment ρ00 for flavorless vector mesons by using the gauge/gravity duality. Focusing on the dilepton production through vector meson decay, we derive the relation between production rates at each spin channel and meson's spectral function, which can be evaluated by holographic models for a strongly coupled system. As examples, we study...
Go to contribution page -
Bolun Hu29/11/2024, 11:30Invited
The origin of hadron masses remains a fundamental question in QCD. While most of the proton’s mass arises from strong interactions, with only a small fraction stemming from quark masses, it is natural to ask if this phenomenon extends to other baryons with heavier quark content. In this talk, we explore how quark masses and the trace anomaly contribute to the masses of baryons containing...
Go to contribution page -
Mr Peng Sun (IMP)29/11/2024, 12:00Invited
We report a lattice QCD calculation of the parton distribution function (PDF) of a deuteron-like dibaryon system using large-momentum effective theory. The calculation is done on three Wilson Clover ensembles with a fixed lattice spacing a=0.105 fm and two pion masses. The lattice matrix elements are computed at proton momenta up to 2.46 GeV with the signal of high momentum modes being...
Go to contribution page -
Yu Jia29/11/2024, 14:00
-
Qinghua Xu29/11/2024, 14:30
-
Ping Wang29/11/2024, 15:00
-
Prof. Ismail Zahed (Stony Brook)29/11/2024, 16:00Invited
I will briefly outline the current Stony Brook program to address the light mesons and hadrons on the light front, based on the current evidence of the topological nature of the QCD vacuum from lattice simulations. I will provide a detailed description of the light mesons: pions, kaons, rhos on the light front, using the instanton liquid model (ILM) of the QCD vacuum.
Go to contribution page -
Oleg Teryaev (JINR)29/11/2024, 16:30Invited
The energy momentum tensor (EMT) matrix elements appear in the moments of various parton distributions. The external gravity coupling to EMT provide the constraints to hadron structure due to equivalence principle, This provides the complementary aspect of Ji's sum rules and the possibility of its tests in the experiments with precise measurements of spin precession.
The notion of...
Go to contribution page -
29/11/2024, 17:00
-
Di Gao (Institute of Modern Physics, Chinese Academy of Sciences)Poster
We use light-cone QCD sum rules with chiral currents to study the transition form factors in the semileptonic decay of charmed and bottom scalar mesons, $D/B \rightarrow a_{0}(980)/\, \text{Pion}/\, \rho/\, b_{1}+ l\nu_{l}$ $(l=e, \mu)$. For this, we consider various distribution amplitudes of the mesons $a_{0}(980)$, pion, $\rho$, and $b_{1}$ corresponding to different form factors. Our...
Go to contribution page -
Zaiba Mushtaq (Institute of Modern Physics, CAS)Poster
\documentclass{article}
\usepackage{amsmath}\begin{document}
\title{Dark Photon Sensitivity Study in an $\eta$ Factory Experiment at HIAF}
\date{}
\maketitleA simulation study has been conducted on dark photon sensitivity for a proposed $\eta$ factory experiment at Huizhou using the HIAF proton beam. The experiment, with a beam kinetic energy of 1.8 GeV, is expected to produce...
Go to contribution page -
纪新 余 (兰州大学)Poster
The high-twist contributions of the proton's LCDA are significant and cannot be neglected. This conclusion is consistent with the findings in the Λ𝑏 → 𝑝 form factor, suggesting that it may be a general conclusion. Thus, we should gain new insights into the internal structure of the proton.
Go to contribution page -
Abigail Rodrigues Castro (CEA-Saclay)Oral
This work presents a systematic feasibility study on measuring backward deeply virtual Compton scattering (bDVCS) on the pion through Sullivan processes, within the framework of collinear QCD factorization. In this approach, pion-to-photon transition distribution amplitudes (TDAs) are used to describe the photonic structure of the pion. Using the TDA framework considering overlap of...
Go to contribution page -
Amrita Sain (Institute of Modern Physics)Poster
We calculate the gluon gravitational form factors (GFFs) of the proton and explore their implications for the proton's mechanical properties, including pressure and shear force distributions, as well as the mechanical and mass radii, using a light-front gluon-spectator model based on soft-wall AdS/QCD. The model parameters are determined by fitting the unpolarized gluon distribution function...
Go to contribution page -
Stanislaw Glazek (University of Warsaw)Invited
The canonical Hamiltonian of QCD in the front form involves severe small-$x$ divergences that impede access to the logarithmically scale-dependent dynamics of hadronic constituents. We present a method for circumventing these divergences, thus opening a pathway for the systematic computation of the Hamiltonians for quarks and gluons using the renormalization group procedure for effective...
Go to contribution page -
Yiping Liu
-
Yong Zheng (兰州大学)Poster
Inverse Problem Approach, a novel non-perturbative method, has no any artificial assumptions or uncontrolled parameters.
Go to contribution page
As an application, we obtain the decay constants for ground states and radial excited states with specific quantum number.
Moreover, the continuum spectrum, containing more resonance properties, is solved simultaneously, and its non-trivial structure demonstrates that... -
Ao-Sheng Xiong (Lanzhou University)Poster
We propose a novel theoretical framework, the inverse problem approach, to calculate the non-perturbative QCD quantities. Using the dispersion relation of quantum field theory, it solves the unknown low-energy non-perturbative quantities by the inverse problem, with the known high-energy perturbative calculations as inputs. We prove that the inverse problem of dispersion relation is ill-posed,...
Go to contribution page -
Hongyao YuPoster
We calculate the proton's T-even transverse momentum dependent distributions (TMDs) at the leading-twist within the Basis Light-front Quantization (BLFQ) framework. We employ the light-front wave functions of the proton obtained from a light-front quantized Hamiltonian with Quantum Chromodynamics input determined for its valence Fock sector ($|qqq\rangle$) and an additional Fock sector...
Go to contribution page -
Craig Roberts (Nanjing University)Invited
-
Craig Roberts (Nanjing University)Invited
Nature poses three basic questions to be answered by any theory of strong interactions: What is the origin of the nuclear-physics mass scale, $m_p$, that characterises all visible matter; whatever it is, why is the pion seemingly oblivious; and how is the underlying mechanism or phenomenon expressed in measurable quantities? Given the number and diverse character of hadrons, one can be...
Go to contribution page -
Wei Wang
-
Kehinde Ogundipe (Institute of Modern Physics, NanChangLu 509, Lanzhou, 730000, China; University of the Chinese Academy of Sciences, YuQuanLu 19A, Beijing, 100049, China)Poster
In our work, we develop a perturbative framework for analyzing time-dependent quantum solitons, focusing on configurations like soliton collisions and oscillons, separating classical motion from quantum aspects. The method reduces complex soliton dynamics in quantum field theory to a manageable, fully perturbative approach.
Go to contribution page -
JAI MORE (Indian Institute of Technology Bombay)Oral
We analyze the contributions to the gravitational form factors (GFFs) arising from the photon component of the energy-momentum tensor within the framework of light-front QED. Considering a dressed electron state, we employ the light-front Hamiltonian approach in light-front gauge. Additionally, we explore the impact of the photon on the mechanical properties of the dressed electron state, like...
Go to contribution page -
Yang Li (University of Science and Technology of China)Invited
The hadronic energy-momentum tensor encodes the energy and stress distributions within hadrons. In this talk, I will report our recent advancements on the computation of gravitational form factor D(Q^2) in holographic QCD. Our method exploits the remarkable correspondence between semi-classical light-front QCD and semi-classical field theories in wrapped spacetime in 5D. The use of light-front...
Go to contribution page -
Xiaoyi Wu (中国科学院近代物理所)Poster
We investigate the singly virtual transition form factor (TFF) for the π0→γ∗γ process in the space-like region using the hard-scattering formalism within the Basis Light-Front Quantization (BLFQ) framework. This form factor is expressed in terms of the perturbatively calculable hard-scattering amplitudes (HSAs) and the light-front wave functions (LFWFs) of the pion. We obtain the pion LFWFs by...
Go to contribution page -
rongkai dai (云南大学), wenjiong guo (云南大学)Poster
A new measurement of the heavy-flavor hadron double-spin asymmetry has been proposed for the future Electron-Ion Collider. Using basis light-front quantization as a non-perturbative approach, we generate the proton's PDFs. By convolving these PDFs with coefficient functions, we calculate the structure function and the heavy-flavor hadron double longitudinal spin asymmetry. These results offer...
Go to contribution page -
George Yabusaki (Universidade Cidade de São Paulo)Invited
We investigate the properties of the charged kaon in symmetric nuclear matter by employing a Bethe-Salpeter amplitude to model the quark-antiquark bound state, which is well established by prior studies of its vacuum properties. Our analysis examines the electromagnetic form factor, charge radius, decay constant, and the light-front valence component probability. To effectively describe the...
Go to contribution page -
Filippo Fornetti (Università degli Studi di Perugia, INFN Sezione di Perugia)Invited
We present the description of light-nuclei, in valence approximation, within a rigorous Light-Front (LF) approach. The latter, fulfills Poincaré covariance, macroscopic locality,number of particles and momentum sum rules. We applied the analysis to electron deep inelastic scattering (DIS) on He3, H3 and He4 targets, in the Bjorken limit. For details about the 3He case, see Ref. [1]. Within the...
Go to contribution page -
Prof. Matthias Burkardt (New Mexico State U.)Invited
In the Hamiltonian light-front formulation of field theory the vacuum (ground state) is trivial and hence a Fock space expansion makes sense. I will discuss how this is consistent with other formulations, such as Euclidean lattice (where the vacuum is non-trivial), and how this impacts calculations of hadron spectra and structure.
Go to contribution page -
jialin chen (IMP)Poster
We obtain the light meson mass spectroscopy and wave functions from the light-front quantum chromodynamics
Go to contribution page
Hamiltonian for the first time, using a fully relativistic and nonperturbative approach based on light-front
quantization, without an explicit confining potential. These eigenstates are determined for their constituent
quark-antiquark, quark-antiquark-gluon and... -
Anuradha Misra
-
Yuanqi Lu (Institute of modern physics)Poster
Within the Basis Light-Front Quantization framework, we systematically investigate the subleading twist (twist-3) transverse-momentum-dependent parton distribution functions (TMDs) of the kaon beyond the Wandzura-Wilczek (WW) approximation. The subleading twist TMDs are not independent and can be decomposed into twist-2 and genuine twist-3 terms from the equations of motion. The latter...
Go to contribution page -
TANMAY MAJI (NIT Kurukshetra)Oral
The boost invariant longitudinal position space variable $\sigma=\frac{1}{2} b^- P^+$, the Fourier conjugate to skewness $\xi$, unravels the longitudinal impact parameter information in a proton. The Fourier transform of the GTMDs with respect to the skewness variable $\xi$ can be employed to provide the Wigner distributions in the boost-invariant longitudinal position space $\sigma$, the...
Go to contribution page
Choose timezone
Your profile timezone: