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

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

SN - 0370-2693

IS - 3-4

ER -