Measurement of the Transverse Single-Spin Asymmetry in p ↑+p →w± /Z0 at RHIC

STAR Collaboration

doi:10.1103/PhysRevLett.116.132301

Measurement of the Transverse Single-Spin Asymmetry in p ↑+p →w± /Z0 at RHIC

STAR Collaboration

AGH University of Krakow
University of Kentucky
Joint Institute for Nuclear Research
Panjab University
Kent State University
Brookhaven National Laboratory
Variable Energy Cyclotron Centre
Alikhanov Institute for Theoretical and Experimental Physics
Central China Normal University
National Institute of Science Education and Research
University of Houston
University of Jammu
University of Texas at Austin
Czech Technical University in Prague
Czech Academy of Sciences
Rice University
Moscow Engineering Physics Institute
Yale University
University of California at Davis
Ohio State University
Texas A&M University
Chinese Academy of Sciences
Tsinghua University
Creighton University
Lawrence Berkeley National Laboratory
University of California at Berkeley
Institute of Physics
Shandong University
Institute for High Energy Physics
Pennsylvania State University
Valparaiso University
University of California at Los Angeles
University of Illinois at Chicago
Purdue University
Warsaw University of Technology
Temple University
University of Science and Technology of China
National Cheng Kung University
Indiana University Bloomington
Korea Institute of Science and Technology Information
Wayne State University
Goethe University Frankfurt
Argonne National Laboratory
Stony Brook University
Indian Institute of Technology Bombay
Michigan State University
Pusan National University
Institute of Nuclear Physics PAN
University of Rajasthan
Max Planck Institute for Physics (Werner Heisenberg Institute)
World Laboratory for Cosmology and Particle Physics (WLCAPP)
United States Naval Academy

Research output: Contribution to journal › Article › peer-review

105 Scopus citations

Abstract

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.

Original language	English
Article number	132301
Journal	Physical Review Letters
Volume	116
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.116.132301
State	Published - 1 Apr 2016
Externally published	Yes

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10.1103/PhysRevLett.116.132301

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title = "Measurement of the Transverse Single-Spin Asymmetry in p ↑+p →w± /Z0 at RHIC",

abstract = "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.",

author = "L. Adamczyk and Adkins, \{J. K.\} and G. Agakishiev and Aggarwal, \{M. M.\} and S. Kabana and \{STAR Collaboration\}",

note = "Publisher Copyright: {\textcopyright} 2016 American Physical Society.",

year = "2016",

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doi = "10.1103/PhysRevLett.116.132301",

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AU - Adamczyk, L.

AU - Adkins, J. K.

AU - Agakishiev, G.

AU - Aggarwal, M. M.

AU - Kabana, S.

AU - STAR Collaboration

PY - 2016/4/1

Y1 - 2016/4/1

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/84963674111

U2 - 10.1103/PhysRevLett.116.132301

DO - 10.1103/PhysRevLett.116.132301

M3 - Article

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SN - 0031-9007

VL - 116

JO - Physical Review Letters

JF - Physical Review Letters

IS - 13

M1 - 132301

ER -

Measurement of the Transverse Single-Spin Asymmetry in p ↑+p →w± /Z0 at RHIC

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