Drell-Yan angular lepton distributions at small x from TMD factorization.
Abstract
The Drell-Yan process is studied in the framework of TMD factorization in the Sudakov region s » Q2 » \( {q}_{\perp}^2 \) corresponding to recent LHC experiments with Q2 of order of mass of Z-boson and transverse momentum of DY pair ~ few tens GeV. The DY hadronic tensors are expressed in terms of quark and quark-gluon TMDs with \( \frac{1}{Q^2} \) and \( \frac{1}{N_c^2} \) accuracy. It is demonstrated that in the leading order in Nc the higher-twist quark-quark-gluon TMDs reduce to leading-twist TMDs due to QCD equation of motion. The resulting hadronic tensors depend on two leading-twist TMDs: f1 responsible for total DY cross section, and Boer-Mulders function \( {h}_1^{\perp } \). The corresponding qualitative and semi-quantitative predictions seem to agree with LHC data on five angular coefficients A0 – A4 of DY pair production. The remaining three coefficients A5 – A7 are determined by quark-quark-gluon TMDs multiplied by extra \( \frac{1}{N_c} \) so they appear to be relatively small in accordance with LHC results.
- Authors:
-
- Old Dominion Univ., Norfolk, VA (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Publication Date:
- Research Org.:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1819085
- Report Number(s):
- JLAB-THY-21-3407; DOE/OR/23177-5225; arXiv:2105.13391
Journal ID: ISSN 1029-8479; TRN: US2214059
- Grant/Contract Number:
- AC05-06OR23177
- 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: 2021; Journal Issue: 9; Journal ID: ISSN 1029-8479
- Publisher:
- Springer Nature
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; perturbative QCD; nonperturbative Effects
Citation Formats
Balitsky, Ian. Drell-Yan angular lepton distributions at small x from TMD factorization.. United States: N. p., 2021.
Web. doi:10.1007/jhep09(2021)022.
Balitsky, Ian. Drell-Yan angular lepton distributions at small x from TMD factorization.. United States. https://doi.org/10.1007/jhep09(2021)022
Balitsky, Ian. Mon .
"Drell-Yan angular lepton distributions at small x from TMD factorization.". United States. https://doi.org/10.1007/jhep09(2021)022. https://www.osti.gov/servlets/purl/1819085.
@article{osti_1819085,
title = {Drell-Yan angular lepton distributions at small x from TMD factorization.},
author = {Balitsky, Ian},
abstractNote = {The Drell-Yan process is studied in the framework of TMD factorization in the Sudakov region s » Q2 » \( {q}_{\perp}^2 \) corresponding to recent LHC experiments with Q2 of order of mass of Z-boson and transverse momentum of DY pair ~ few tens GeV. The DY hadronic tensors are expressed in terms of quark and quark-gluon TMDs with \( \frac{1}{Q^2} \) and \( \frac{1}{N_c^2} \) accuracy. It is demonstrated that in the leading order in Nc the higher-twist quark-quark-gluon TMDs reduce to leading-twist TMDs due to QCD equation of motion. The resulting hadronic tensors depend on two leading-twist TMDs: f1 responsible for total DY cross section, and Boer-Mulders function \( {h}_1^{\perp } \). The corresponding qualitative and semi-quantitative predictions seem to agree with LHC data on five angular coefficients A0 – A4 of DY pair production. The remaining three coefficients A5 – A7 are determined by quark-quark-gluon TMDs multiplied by extra \( \frac{1}{N_c} \) so they appear to be relatively small in accordance with LHC results.},
doi = {10.1007/jhep09(2021)022},
journal = {Journal of High Energy Physics (Online)},
number = 9,
volume = 2021,
place = {United States},
year = {Mon Sep 06 00:00:00 EDT 2021},
month = {Mon Sep 06 00:00:00 EDT 2021}
}
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