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Title: Longitudinal double-spin asymmetry for inclusive jet and dijet production in p p collisions at s = 510 GeV

Journal Article · · Physical Review. D.
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We report the first measurement of the inclusive jet and the dijet longitudinal double-spin asymmetries, ALL, at midrapidity in polarized pp collisions at a center-of-mass energy √s = 510 GeV. The inclusive jet ALL measurement is sensitive to the gluon helicity distribution down to a gluon momentum fraction of x ≈ 0.015, while the dijet measurements, separated into four jet-pair topologies, provide constraints on the x dependence of the gluon polarization. Both results are consistent with previous measurements made at √s = 200 GeV in the overlapping kinematic region, x>0.05, and show good agreement with predictions from recent next-to-leading order global analyses.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Texas A & M Univ., College Station, TX (United States); Stony Brook Univ., NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Contributing Organization:
STAR Collaboration
Grant/Contract Number:
SC0017982; SC0012704; FG02-87ER40331; SC0015636; AC02-05CH11231
OSTI ID:
1560777
Alternate ID(s):
OSTI ID: 1529085; OSTI ID: 1577676; OSTI ID: 1594819; OSTI ID: 1603524; OSTI ID: 1770740; OSTI ID: 1787613
Report Number(s):
BNL-211793-2019-JAAM; BNL-221131-2021-JAAM; PRVDAQ; 052005
Journal Information:
Physical Review. D., Journal Name: Physical Review. D. Vol. 100 Journal Issue: 5; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

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