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Title: QCD resummation of dijet azimuthal decorrelations in pp and pA collisions

Abstract

We study the azimuthal angular decorrelations of dijet production in both proton-proton (pp) and proton-nucleus (pA) collisions. By utilizing soft-collinear effective theory, we establish the factorization and resummation formalism at the next-to-leading logarithmic accuracy for the azimuthal angular decorrelations in the back-to-back limit in pp collisions. We propose an approach where the nuclear modifications to dijet production in pA collisions are accounted for in the nuclear modified transverse momentum dependent parton distribution functions (nTMDPDFs), which contain both collinear and transverse dynamics. This approach naturally generalizes the well-established formalism related to the nuclear modified collinear parton distribution functions (nPDFs). We demonstrate strong consistency between our methodology and the CMS measurements in both pp and pA collisions, and make predictions for dijet production in the forward rapidity region in pA collisions at LHC kinematics and for mid-rapidity kinematics at sPHENIX. Throughout this paper, we focus on the application of this formalism to a simultaneous fit to both collinear and transverse momentum dependent contributions to the transverse momentum dependent distributions.

Authors:
 [1];  [2]; ORCiD logo [1]; ORCiD logo [3];  [1]
  1. Fudan University, Shanghai (China)
  2. University of California, Los Angeles, CA (United States); Stony Brook University, NY (United States)
  3. Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
2008293
Report Number(s):
LA-UR-23-24761
Journal ID: ISSN 1029-8479
Grant/Contract Number:  
89233218CNA000001
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: 2023; Journal Issue: 10; Journal ID: ISSN 1029-8479
Publisher:
Springer Nature
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Atomic, Nuclear and Particle Physics; Jets and Jet Substructure; Resummation; Specifc QCD Phenomenology

Citation Formats

Gao, Mei-Sen, Kang, Zhong-Bo, Shao, Ding Yu, Terry, John David, and Zhang, Cheng. QCD resummation of dijet azimuthal decorrelations in pp and pA collisions. United States: N. p., 2023. Web. doi:10.1007/jhep10(2023)013.
Gao, Mei-Sen, Kang, Zhong-Bo, Shao, Ding Yu, Terry, John David, & Zhang, Cheng. QCD resummation of dijet azimuthal decorrelations in pp and pA collisions. United States. https://doi.org/10.1007/jhep10(2023)013
Gao, Mei-Sen, Kang, Zhong-Bo, Shao, Ding Yu, Terry, John David, and Zhang, Cheng. Tue . "QCD resummation of dijet azimuthal decorrelations in pp and pA collisions". United States. https://doi.org/10.1007/jhep10(2023)013. https://www.osti.gov/servlets/purl/2008293.
@article{osti_2008293,
title = {QCD resummation of dijet azimuthal decorrelations in pp and pA collisions},
author = {Gao, Mei-Sen and Kang, Zhong-Bo and Shao, Ding Yu and Terry, John David and Zhang, Cheng},
abstractNote = {We study the azimuthal angular decorrelations of dijet production in both proton-proton (pp) and proton-nucleus (pA) collisions. By utilizing soft-collinear effective theory, we establish the factorization and resummation formalism at the next-to-leading logarithmic accuracy for the azimuthal angular decorrelations in the back-to-back limit in pp collisions. We propose an approach where the nuclear modifications to dijet production in pA collisions are accounted for in the nuclear modified transverse momentum dependent parton distribution functions (nTMDPDFs), which contain both collinear and transverse dynamics. This approach naturally generalizes the well-established formalism related to the nuclear modified collinear parton distribution functions (nPDFs). We demonstrate strong consistency between our methodology and the CMS measurements in both pp and pA collisions, and make predictions for dijet production in the forward rapidity region in pA collisions at LHC kinematics and for mid-rapidity kinematics at sPHENIX. Throughout this paper, we focus on the application of this formalism to a simultaneous fit to both collinear and transverse momentum dependent contributions to the transverse momentum dependent distributions.},
doi = {10.1007/jhep10(2023)013},
journal = {Journal of High Energy Physics (Online)},
number = 10,
volume = 2023,
place = {United States},
year = {Tue Oct 03 00:00:00 EDT 2023},
month = {Tue Oct 03 00:00:00 EDT 2023}
}

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