Published January 19, 2024 | Version v1
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Angular momentum distribution of a quark dressed with a gluon

  • 1. Department of Physics, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
  • 2. Department of Theoretical Physics, Tata Institute of Fundamental Research, Colaba, Mumbai 400005, India

Description

We investigate the different decompositions of the angular momentum in QCD for a relativistic spin 1/2 composite state, namely a quark dressed with a gluon. We use light-front Hamiltonian perturbation theory, and in the light-front gauge, use the two-component framework by eliminating the constrained degrees of freedom. We also investigate the different decompositions of the angular momentum at the level of two-dimensional densities in the front form, including the effect of the so-called potential term. In this work, we consider the contribution coming from the quark part of the energy-momentum tensor. We contrast the different decompositions and also compare with other calculations in the literature. We also present the gravitational form factor related to the antisymmetric part of the energy-momentum tensor.

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10.1103_PhysRevD.109.016022.pdf

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Additional details

Identifiers

DOI
10.1103/PhysRevD.109.016022;
arXiv
arXiv:2311.04622;
Crossref Funder ID
10.13039/501100006593;

Publishing Information

Journal Title
Physical Review D
Journal Volume
109
Journal Issue
1
Journal Page Range
21 pgs.
ISSN
1089-4918

Optional Information

Contract/Grant/Project number
57/14/04/2021-BRNS/57082
Notes
Contact Email: 30004559@iitb.ac.in; Contact Email: sudeepsaha@iitb.ac.in; Contact Email: asmita@phy.iitb.ac.in; Contact Email: nilmani@theory.tifr.res.in; Record automatically processed
Funding organization
Board of Research in Nuclear Sciences