STI Publications - View Publication Form #16627

Back to Search Results Print
Publication Information
Title 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 $s\gg Q^2\gg q_\perp^2$ corresponding to recent LHC experiments with $Q^2$ of order of mass of Z-boson and transverse momentum of DY pair $\sim$ few tens GeV. The DY hadronic tensors are expressed in terms of quark and quark-gluon TMDs with ${1\over Q^2}$ and ${1\over N_c^2}$ accuracy. It is demonstrated that in the leading order in $N_c$ 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: $f_1$ 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 $A_0-A_4$ of DY pair production. The remaining three coefficients $A_5-A_7$ are determined by quark-quark-gluon TMDs multiplied by extra ${1\over N_c}$ so they appear
Author(s) Ian Balitsky
Publication Date September 2021
Document Type Journal Article
Primary Institution Old Dominion University
Affiliation Theory & Comp Physics / THEORY CENTER / THEORY CENTER
Funding Source Nuclear Physics (NP)
Proprietary? No
This publication conveys Technical Science Results
Document Numbers
JLAB Number: JLAB-THY-21-3407 OSTI Number: 1819085
LANL Number: arXiv:2105.13391 Other Number: DOE/OR/23177-5225
Associated with an experiment No
Associated with EIC No
Supported by Jefferson Lab LDRD Funding No
Journal Article
Journal Name Journal of High Energy Physics
Refereed Yes
Volume 09
Issue
Page(s) 022
Attachments/Datasets/DOI Link
Document(s)
DYZP22may21.pdf (STI Document)
DOI Link
Dataset(s) (none)
Back to Search Results Print