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Семинар 26 сентября 2023. Yubing Dong. On generalized parton distributions of spin-3/2 particles and electromagnetic and gravitational form factors
26 сентября, в 12:45 Кафедра физики высоких энергий и элементарных частиц Yubing Dong On generalized parton distributions of spin-3/2 particles and electromagnetic and gravitational form factors The generalized parton distribution functions (GPDs) of spin-3/2 particles are discussed [1]. The connections of those GPDs to the electromagnetic and gravitational form factors and to the structure functions of the systems are also obtained. As a typical example (like Δ or Omega-baryon), we numerically calculate the electromagnetic and gravitational form factors as well as the GPDs of a spin-3/2 baryon by using a quark-diquark approach [2-4]. Some Lattice results are employed to constrain our model parameters. It is found that our studies can give a reasonable description for the electromagnetic form factors. Moreover, we discuss the mechanical properties of the spin-3/2 particles. [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. |
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