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Title: Nuclear gluons at RHIC in a multiobservable approach

Abstract

We explore the possibility of measuring nuclear gluon distributions at the Relativistic Heavy-Ion Collider (RHIC) with √ s = 200 GeV proton-nucleus collisions. In addition to measurements at central rapidity, we consider also observables at forward rapidity, consistent with proposed upgrades to the experimental capabilities of STAR and sPHENIX. The processes we consider consist of Drell-Yan dilepton, dijet, and direct photon-jet production. The Drell-Yan process is found to be an efficient probe of gluons at small momentum fractions. In order to fully utilize the potential of Drell-Yan measurements we demonstrate how the overall normalization uncertainty present in the experimental data can be fixed using other experimental observables. An asset of the RHIC collider is its flexibility to run with different ion beams, and we outline how this ability could be taken advantage of to measure the A dependence of gluon distributions for which the current constraints are scarce.

Authors:
; ; ; ; ORCiD logo
Publication Date:
Research Org.:
Iowa State Univ., Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1532432
Alternate Identifier(s):
OSTI ID: 1599706
Grant/Contract Number:  
SC0013393; FG02-10ER41719; FG02-92ER40962; jyy2580; SC0004907
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 100 Journal Issue: 1; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Helenius, Ilkka, Lajoie, John, Osborn, Joseph D., Paakkinen, Petja, and Paukkunen, Hannu. Nuclear gluons at RHIC in a multiobservable approach. United States: N. p., 2019. Web. doi:10.1103/PhysRevD.100.014004.
Helenius, Ilkka, Lajoie, John, Osborn, Joseph D., Paakkinen, Petja, & Paukkunen, Hannu. Nuclear gluons at RHIC in a multiobservable approach. United States. doi:10.1103/PhysRevD.100.014004.
Helenius, Ilkka, Lajoie, John, Osborn, Joseph D., Paakkinen, Petja, and Paukkunen, Hannu. Mon . "Nuclear gluons at RHIC in a multiobservable approach". United States. doi:10.1103/PhysRevD.100.014004.
@article{osti_1532432,
title = {Nuclear gluons at RHIC in a multiobservable approach},
author = {Helenius, Ilkka and Lajoie, John and Osborn, Joseph D. and Paakkinen, Petja and Paukkunen, Hannu},
abstractNote = {We explore the possibility of measuring nuclear gluon distributions at the Relativistic Heavy-Ion Collider (RHIC) with √ s = 200 GeV proton-nucleus collisions. In addition to measurements at central rapidity, we consider also observables at forward rapidity, consistent with proposed upgrades to the experimental capabilities of STAR and sPHENIX. The processes we consider consist of Drell-Yan dilepton, dijet, and direct photon-jet production. The Drell-Yan process is found to be an efficient probe of gluons at small momentum fractions. In order to fully utilize the potential of Drell-Yan measurements we demonstrate how the overall normalization uncertainty present in the experimental data can be fixed using other experimental observables. An asset of the RHIC collider is its flexibility to run with different ion beams, and we outline how this ability could be taken advantage of to measure the A dependence of gluon distributions for which the current constraints are scarce.},
doi = {10.1103/PhysRevD.100.014004},
journal = {Physical Review D},
number = 1,
volume = 100,
place = {United States},
year = {2019},
month = {7}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevD.100.014004

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