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arXiv · 2108.03905

Proton gravitational form factors in a light-front quark-diquark model

Dipankar Chakrabarti·Chandan Mondal·Asmita Mukherjee·Sreeraj Nair·Xingbo Zhao
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Abstract

We present a recent calculation of the gravitational form factors (GFFs) of proton using the light-front quark-diquark model constructed by the soft-wall AdS/QCD. The four GFFs $~A(Q^2)$ , $B(Q^2)$ , $C(Q^2)$ and $\bar{C}(Q^2)$ are calculated in this model. We also show the pressure and shear distributions of quarks inside the proton. 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.

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Dipankar Chakrabarti, Chandan Mondal, Asmita Mukherjee, Sreeraj Nair, Xingbo Zhao. 2021-08-09. Proton gravitational form factors in a light-front quark-diquark model. https://arxiv.org/abs/2108.03905

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