Longitudinal double-spin asymmetry for inclusive jet and dijet production in collisions at
Journal Article
·
· Physical Review. D.
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
Cited by: 24 works
Citation information provided by
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