XXV International Baldin Seminar on High Energy Physics Problems "Relativistic Nuclear Physics and Quantum Chromodynamics"

On GPDs of spin-3/2 particles and electromagnetic and gravitational form factors

19 Sept 2023, 11:50

20m

Conference Hall (BLTP JINR)

Plenary

Speaker

Dong, Yubing (Institute of High Energy Physics, Chinese Academy of Sciences, P. R. China)

Description

The generalized parton distribution functions (GPDs) of spin-3/2 particles are given 【1】. Sum rules of those GPDs and structure functions of the systems are obtained. As a typical example, we numerically calculate the electromagnetic and gravitational form factors of the spin-3/2 baryon (like \Delta or \Omega) by using a quark-diquark approach【2-4】. Lattice calculation results are considered to constrain our model parameters. Our study gives a reasonable description for the electromagnetic and mechanical properties of the spin-3/2 particle.

[1] Dongyan Fu, Baodong Sun, and Yubing Dong, Phys. Rev. D106 (2022), 116012, arXiv:2209.12161.
[2] Dongyan Fu, Baodong Sun, and Yubing Dong, Phys. Rev. D105 (2022), 096002, arXiv:2201.08059.
[3] Dongyan Fu, Baodong Sun, and Yubing Dong, Phys. Rev. D107 (2023), 116021, arXiv:2305.02680.
[4] Dongyan Fu, Jiaqin Wang and Yubing Dong, “Form factors of Ω− in a covariant quark-diquark approach”, arXiv:2306.04869.

Presentation materials

DYB2023(09_18).pdf