Семинар 26 сентября 2023. Yubing Dong. On generalized parton distributions of spin-3/2 particles and electromagnetic and gravitational form factors
by: , @ Thu, 21 Sep 2023 17:59:52 +0400
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.