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Title: Signature of the Gluon Orbital Angular Momentum

Abstract

We propose a novel observable for the experimental detection of the gluon orbital angular momentum (OAM) that constitutes the proton spin sum rule. We consider longitudinal double spin asymmetry in exclusive dijet production in electron-proton scattering and demonstrate that the cos φ azimuthal angle correlation between the scattered electron and proton is a sensitive probe of the gluon OAM at small-x and its interplay with the gluon helicity. We also present a numerical estimate of the cross section for the kinematics of the Electron-Ion Collider.

Authors:
ORCiD logo; ; ORCiD logo
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
OSTI Identifier:
1866010
Alternate Identifier(s):
OSTI ID: 1867195
Report Number(s):
BNL-222979-2022-JAAM
Journal ID: ISSN 0031-9007; PRLTAO; 182002
Grant/Contract Number:  
SC0012704
Resource Type:
Published Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Name: Physical Review Letters Journal Volume: 128 Journal Issue: 18; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; quantum chromodynamics; strong interaction

Citation Formats

Bhattacharya, Shohini, Boussarie, Renaud, and Hatta, Yoshitaka. Signature of the Gluon Orbital Angular Momentum. United States: N. p., 2022. Web. doi:10.1103/PhysRevLett.128.182002.
Bhattacharya, Shohini, Boussarie, Renaud, & Hatta, Yoshitaka. Signature of the Gluon Orbital Angular Momentum. United States. https://doi.org/10.1103/PhysRevLett.128.182002
Bhattacharya, Shohini, Boussarie, Renaud, and Hatta, Yoshitaka. Mon . "Signature of the Gluon Orbital Angular Momentum". United States. https://doi.org/10.1103/PhysRevLett.128.182002.
@article{osti_1866010,
title = {Signature of the Gluon Orbital Angular Momentum},
author = {Bhattacharya, Shohini and Boussarie, Renaud and Hatta, Yoshitaka},
abstractNote = {We propose a novel observable for the experimental detection of the gluon orbital angular momentum (OAM) that constitutes the proton spin sum rule. We consider longitudinal double spin asymmetry in exclusive dijet production in electron-proton scattering and demonstrate that the cos φ azimuthal angle correlation between the scattered electron and proton is a sensitive probe of the gluon OAM at small-x and its interplay with the gluon helicity. We also present a numerical estimate of the cross section for the kinematics of the Electron-Ion Collider.},
doi = {10.1103/PhysRevLett.128.182002},
journal = {Physical Review Letters},
number = 18,
volume = 128,
place = {United States},
year = {2022},
month = {5}
}

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  • Hatta, Yoshitaka; Yoshida, Shinsuke
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