Speaker
Dimitra Pefkou
(MIT)
Description
The gravitational form factors (GFFs) of hadrons are related to the second Mellin moments of their generalized parton distributions. They can be extracted from matrix elements of the energy-momentum tensor of QCD. We present the gluon and quark flavor contributions to the GFFs of the pion and the nucleon in the kinematic region $0 \leq -t \leq 2~\text{GeV}^2$ on a clover improved ensemble with $a = 0.091~\text{fm}$, $N_f=2+1$, and $m_{\pi} = 170~\text{MeV}$. The results are renormalized non-perturbatively via the RI-MOM scheme. We obtain estimates for the energy and mechanical distributions, and for the forward limit momentum fraction, spin, and $D$-term flavor decompositions.
| Topical area | Structure of Hadrons and Nuclei |
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Primary author
Dimitra Pefkou
(MIT)
Co-authors
Daniel Hackett
(MIT)
Patrick Oare
(Massachusetts Institute of Technology)
Phiala Shanahan
(Massachusetts Institute of Technology)