Mechanical properties of proton in a light-front quark-diquark model

15 Apr 2021, 08:36
18m
Virtual (Stony Brook, NY)

Virtual

Stony Brook, NY

Online
Contributed Talk Spin Physics Spin Physics

Speaker

Sreeraj Nair (The Institute of Modern Physics (IMP) of the Chinese Academy of Sciences)

Description

We obtain the gravitational
form factors (GFFs) and investigate their applications for the description of the mechanical properties, i.e., the distributions of pressures, shear forces inside proton, and the mechanical radius, in a light-front quark-diquark model constructed by the soft-wall AdS/QCD. The GFFs, $A(Q^2)$ and $B(Q^2)$ are found to be consistent with the lattice QCD, while the qualitative behavior of the $D$-term form factor is in agreement with the extracted data from the deeply virtual Compton scattering (DVCS) experiments at JLab, the lattice QCD, and the predictions of different phenomenological models. The pressure and shear force distributions are also consistent with the results of different models.

Primary authors

Dr Chandan Mondal Asmita Mukherjee (IIT Bombay) Mr Xingbo Zhao (Institute of Modern Physics, Chinese Academy of Sciences) Sreeraj Nair (The Institute of Modern Physics (IMP) of the Chinese Academy of Sciences) Dr Dipankar Chakrabarti (Indian Institute of Technology Kanpur)

Presentation materials