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Title: Measurement of the Transverse Single-Spin Asymmetry in p + p W ± / Z 0 at RHIC

Journal Article · · Physical Review Letters
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We present the measurement of the transverse single-spin asymmetry of weak boson production in transversely polarized proton-proton collisions at s=500 GeV by the STAR experiment at RHIC. The measured observable is sensitive to the Sivers function, one of the transverse-momentum-dependent parton distribution functions, which is predicted to have the opposite sign in proton-proton collisions from that observed in deep inelastic lepton-proton scattering. These data provide the first experimental investigation of the nonuniversality of the Sivers function, fundamental to our understanding of QCD.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States). Relativistic Heavy Ion Collider (RHIC); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Contributing Organization:
STAR Collaboration
Grant/Contract Number:
SC00112704; AC02-05CH11231
OSTI ID:
1341525
Alternate ID(s):
OSTI ID: 1245053; OSTI ID: 1459369
Report Number(s):
BNL-112275-2016-JA; R&D Project: PO 004; KB0202012
Journal Information:
Physical Review Letters, Vol. 116, Issue 13; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 59 works
Citation information provided by
Web of Science

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Cited By (5)

The sea of quarks and antiquarks in the nucleon journal March 2019
Sivers distribution functions of sea quarks in a proton with the chiral Lagrangian journal October 2019
Transverse spin observables in hard-scattering hadronic processes within collinear factorization journal November 2016
π - N Drell-Yan Process in TMD Factorization journal January 2019
First Measurement of Transverse-Spin-Dependent Azimuthal Asymmetries in the Drell-Yan Process text January 2017


Figures / Tables (5)