25–29 Nov 2024
Huizhou, Guangdong, China
Asia/Shanghai timezone

Energy-momentum tensor distribution for transversely polarized nucleons

27 Nov 2024, 15:00
30m
Room-1, Meeting Center, Institute of Modern Physics, Chinese Academy of Sciences (Huizhou, Guangdong, China)

Room-1, Meeting Center, Institute of Modern Physics, Chinese Academy of Sciences

Huizhou, Guangdong, China

Oral Parallel-1

Speaker

Ho-Yeon Won (CPHT, CNRS, École Polytechnique)

Description

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 distributions, derived from the matrix elements $\widehat{T}^{00}$ and $\widehat{T}^{33}$, respectively. In contrast, in the EF longitudinal momentum distribution, associated with the matrix element $\widehat{T}^{03}$, the spin-independent contributions are induced as $P_{z}$ increases. These induced contributions lead to distortions in each distribution. In the IMF, the spin-dependent contributions vanish, while the spin-independent ones remain, resulting in a perfect monopole structure in the EF energy, EF longitudinal momentum, and EF longitudinal normal force distributions for the transversely polarized nucleon.

Primary author

Ho-Yeon Won (CPHT, CNRS, École Polytechnique)

Co-author

Cédric Lorcé (CPHT, CNRS, École polytechnique)

Presentation materials