Small-x asymptotics of the gluon helicity distribution
Abstract
Here, we determine the small-x asymptotics of the gluon helicity distribution in a proton at leading order in perturbative QCD at large N c. To achieve this, we begin by evaluating the dipole gluon helicity TMD at small x. In the process we obtain an interesting new result: in contrast to the unpolarized dipole gluon TMD case, the operator governing the small-x behavior of the dipole gluon helicity TMD is different from the operator corresponding to the polarized dipole scattering amplitude (used in our previous work to determine the small-x asymptotics of the quark helicity distribution).
- Authors:
- The Ohio State Univ., Columbus, OH (United States)
- Penn State Univ.-Berks, Reading, PA (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
- OSTI Identifier:
- 1411358
- Report Number(s):
- LA-UR-17-25006
Journal ID: ISSN 1029-8479; TRN: US1800223
- Grant/Contract Number:
- AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of High Energy Physics (Online)
- Additional Journal Information:
- Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2017; Journal Issue: 10; Journal ID: ISSN 1029-8479
- Publisher:
- Springer Berlin
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Atomic and Nuclear Physics
Citation Formats
Kovchegov, Yuri V., Pitonyak, Daniel, and Sievert, Matthew D. Small-x asymptotics of the gluon helicity distribution. United States: N. p., 2017.
Web. doi:10.1007/JHEP10(2017)198.
Kovchegov, Yuri V., Pitonyak, Daniel, & Sievert, Matthew D. Small-x asymptotics of the gluon helicity distribution. United States. doi:10.1007/JHEP10(2017)198.
Kovchegov, Yuri V., Pitonyak, Daniel, and Sievert, Matthew D. Fri .
"Small-x asymptotics of the gluon helicity distribution". United States. doi:10.1007/JHEP10(2017)198. https://www.osti.gov/servlets/purl/1411358.
@article{osti_1411358,
title = {Small-x asymptotics of the gluon helicity distribution},
author = {Kovchegov, Yuri V. and Pitonyak, Daniel and Sievert, Matthew D.},
abstractNote = {Here, we determine the small-x asymptotics of the gluon helicity distribution in a proton at leading order in perturbative QCD at large Nc. To achieve this, we begin by evaluating the dipole gluon helicity TMD at small x. In the process we obtain an interesting new result: in contrast to the unpolarized dipole gluon TMD case, the operator governing the small-x behavior of the dipole gluon helicity TMD is different from the operator corresponding to the polarized dipole scattering amplitude (used in our previous work to determine the small-x asymptotics of the quark helicity distribution).},
doi = {10.1007/JHEP10(2017)198},
journal = {Journal of High Energy Physics (Online)},
number = 10,
volume = 2017,
place = {United States},
year = {2017},
month = {10}
}
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