Speaker
Mitsuru Tanaka
(Nagoya University)
Description
"We calculated the gravitational form factors (GFFs) of pions, A(t) and D(t), using a top-down holographic QCD approach, incorporating momentum transfer dependence.[1] The GFFs of hadrons are of great interest as they provide insights into the internal stress distribution, potentially shedding light on the mechanisms of hadron formation in QCD. Our findings indicate that the absolute value of D(t) decreases more rapidly than that of A(t) which qualitatively aligns with lattice QCD results. Additionally, we determined the forward limit of these GFFs, specifically the D-term, which is -1.
[1] D. Fujii, A. Iwanaka, and M. Tanaka, arXiv:2407.21113 [hep-ph] (2024)."
