Gluon orbital angular momentum at small
Abstract
We present a general analysis of the orbital angular momentum (OAM) distribution of gluons Lg (x) inside the nucleon with particular emphasis on the small- x region. We derive a novel operator representation of Lg (x) in terms of Wilson lines and argue that it is approximately proportional to the gluon helicity distribution Lg (x) ≈ - 2 Δ G (x) at small x . Here, we also compute longitudinal single-spin asymmetry in exclusive diffractive dijet production in lepton-nucleon scattering in the next-to-eikonal approximation and show that the asymmetry is a direct probe of the gluon helicity/OAM distribution as well as the QCD odderon exchange.
- Authors:
-
- Kyoto Univ. (Japan). Yukawa Inst. for Theoretical Physics
- Central China Normal University, Wuhan (China). Key Lab. of Quark and Lepton Physics (MOE) and Inst. of Particle Physics
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Nuclear Science Division
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Nuclear Science Division; Univ. of Maryland, College Park, MD (United States). Maryland Center for Fundamental Physics; Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Center for Theoretical Physics
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1430682
- Alternate Identifier(s):
- OSTI ID: 1372557
- Grant/Contract Number:
- AC02-05CH11231; FG02-93ER40762
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Volume: 95; Journal Issue: 11; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Hatta, Yoshitaka, Nakagawa, Yuya, Xiao, Bowen, Yuan, Feng, and Zhao, Yong. Gluon orbital angular momentum at small x. United States: N. p., 2017.
Web. doi:10.1103/PhysRevD.95.114032.
Hatta, Yoshitaka, Nakagawa, Yuya, Xiao, Bowen, Yuan, Feng, & Zhao, Yong. Gluon orbital angular momentum at small x. United States. https://doi.org/10.1103/PhysRevD.95.114032
Hatta, Yoshitaka, Nakagawa, Yuya, Xiao, Bowen, Yuan, Feng, and Zhao, Yong. Fri .
"Gluon orbital angular momentum at small x". United States. https://doi.org/10.1103/PhysRevD.95.114032. https://www.osti.gov/servlets/purl/1430682.
@article{osti_1430682,
title = {Gluon orbital angular momentum at small x},
author = {Hatta, Yoshitaka and Nakagawa, Yuya and Xiao, Bowen and Yuan, Feng and Zhao, Yong},
abstractNote = {We present a general analysis of the orbital angular momentum (OAM) distribution of gluons Lg (x) inside the nucleon with particular emphasis on the small- x region. We derive a novel operator representation of Lg (x) in terms of Wilson lines and argue that it is approximately proportional to the gluon helicity distribution Lg (x) ≈ - 2 Δ G (x) at small x . Here, we also compute longitudinal single-spin asymmetry in exclusive diffractive dijet production in lepton-nucleon scattering in the next-to-eikonal approximation and show that the asymmetry is a direct probe of the gluon helicity/OAM distribution as well as the QCD odderon exchange.},
doi = {10.1103/PhysRevD.95.114032},
journal = {Physical Review D},
number = 11,
volume = 95,
place = {United States},
year = {Fri Jun 30 00:00:00 EDT 2017},
month = {Fri Jun 30 00:00:00 EDT 2017}
}
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