TY - JOUR
T1 - Chiral structure of nucleon gravitational form factors
AU - Belitsky, A. V.
AU - Ji, X.
N1 - Funding Information:
We would like to thank J.-W. Chen and T.D. Cohen for useful discussions. This work was supported by the US Department of Energy under contract DE-FG02-93ER40762.
PY - 2002/7/4
Y1 - 2002/7/4
N2 - We study the low momentum behavior of nucleon gravitational form factors in the framework of the heavy baryon chiral perturbation theory. At zero recoil they determine the momentum and spin apportion between nucleon constituents. Our result provides an insight into the response of the nucleon's pion cloud to an external weak gravitational field and establishes a theoretical framework for extrapolation of experimental and lattice data on the nucleon form factors to zero momentum transfer. We also discuss form factors corresponding to higher-rank tensor currents related to the moments of generalized parton distributions.
AB - We study the low momentum behavior of nucleon gravitational form factors in the framework of the heavy baryon chiral perturbation theory. At zero recoil they determine the momentum and spin apportion between nucleon constituents. Our result provides an insight into the response of the nucleon's pion cloud to an external weak gravitational field and establishes a theoretical framework for extrapolation of experimental and lattice data on the nucleon form factors to zero momentum transfer. We also discuss form factors corresponding to higher-rank tensor currents related to the moments of generalized parton distributions.
KW - Chiral perturbation theory
KW - Form factors
KW - Nucleon spin structure
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U2 - 10.1016/S0370-2693(02)02025-7
DO - 10.1016/S0370-2693(02)02025-7
M3 - Article
AN - SCOPUS:0141582033
SN - 0370-2693
VL - 538
SP - 289
EP - 297
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 3-4
ER -