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Title: Single spin asymmetry in forward p A collisions: Phenomenology at RHIC

Abstract

We confront the theoretical result of single spin asymmetry (SSA) AN in forward pA collisions pAhX including the gluon saturation effect with the recent preliminary experimental data from the PHENIX and STAR collaborations at RHIC. While we find overall reasonable agreement with the STAR data, our results indicate that the strong nuclear suppression of the asymmetry AN ~ A–1/3 observed by the PHENIX collaboration cannot be explained within the present understanding of this problem.

Authors:
;
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1512337
Alternate Identifier(s):
OSTI ID: 1525406
Report Number(s):
BNL-211745-2019-JAAM
Journal ID: ISSN 2470-0010; PRVDAQ; 094012
Grant/Contract Number:  
SC0012704
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 99 Journal Issue: 9; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Benić, Sanjin, and Hatta, Yoshitaka. Single spin asymmetry in forward p A collisions: Phenomenology at RHIC. United States: N. p., 2019. Web. doi:10.1103/PhysRevD.99.094012.
Benić, Sanjin, & Hatta, Yoshitaka. Single spin asymmetry in forward p A collisions: Phenomenology at RHIC. United States. doi:10.1103/PhysRevD.99.094012.
Benić, Sanjin, and Hatta, Yoshitaka. Mon . "Single spin asymmetry in forward p A collisions: Phenomenology at RHIC". United States. doi:10.1103/PhysRevD.99.094012.
@article{osti_1512337,
title = {Single spin asymmetry in forward p A collisions: Phenomenology at RHIC},
author = {Benić, Sanjin and Hatta, Yoshitaka},
abstractNote = {We confront the theoretical result of single spin asymmetry (SSA) AN in forward pA collisions p↑A → hX including the gluon saturation effect with the recent preliminary experimental data from the PHENIX and STAR collaborations at RHIC. While we find overall reasonable agreement with the STAR data, our results indicate that the strong nuclear suppression of the asymmetry AN ~ A–1/3 observed by the PHENIX collaboration cannot be explained within the present understanding of this problem.},
doi = {10.1103/PhysRevD.99.094012},
journal = {Physical Review D},
number = 9,
volume = 99,
place = {United States},
year = {2019},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevD.99.094012

Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

Figures / Tables:

FIG. 1 FIG. 1: AN for pp→ π0X and pAu→ π0X as a function of Pπ⊥ at √ s = 200 GeV versus preliminary STAR data [12]. The full (dashed) lines are a calculation using the MV (MVγ) model where we used (Q$^{Au}_{S,0}$)2 = 3(Q$^{p}_{S,0}$)2 as well as the central values formore » the transversity and the twist-3 fragmentation functions, while the shaded band reflects the uncertainty in extraction of both of these quantities according to [30].« less

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    Works referencing / citing this record:

    Single-spin asymmetries at two loops
    journal, November 2019


      Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.