Measurement of the Transverse Single-Spin Asymmetry in p^{↑}+p→W^{±}/Z^{0} at RHIC

. 2016 Apr 01 ; 116 (13) : 132301. [epub] 20160401

Status PubMed-not-MEDLINE Jazyk angličtina Země Spojené státy americké Médium print-electronic

Typ dokumentu časopisecké články, práce podpořená grantem, Research Support, U.S. Gov't, Non-P.H.S.

Perzistentní odkaz   https://www.medvik.cz/link/pmid27081970

We present the measurement of the transverse single-spin asymmetry of weak boson production in transversely polarized proton-proton collisions at sqrt[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.

AGH University of Science and Technology FPACS Cracow 30 059 Poland

Alikhanov Institute for Theoretical and Experimental Physics Moscow 117218 Russia

Argonne National Laboratory Argonne Illinois 60439

Brookhaven National Laboratory Upton New York 11973

Central China Normal University Wuhan Hubei 430079

Creighton University Omaha Nebraska 68178

Czech Technical University Prague FNSPE Prague 115 19 Czech Republic

Frankfurt Institute for Advanced Studies FIAS Frankfurt 60438 Germany

Indian Institute of Technology Mumbai 400076 India

Indiana University Bloomington Indiana 47408

Institute of High Energy Physics Protvino 142281 Russia

Institute of Modern Physics Chinese Academy of Sciences Lanzhou Gansu 730000

Institute of Nuclear Physics PAN Cracow 31 342 Poland

Institute of Physics Bhubaneswar 751005 India

Joint Institute for Nuclear Research Dubna 141 980 Russia

Kent State University Kent Ohio 44242

Korea Institute of Science and Technology Information Daejeon 305 701 Korea

Lawrence Berkeley National Laboratory Berkeley California 94720

Max Planck Institut für Physik Munich 80805 Germany

Michigan State University East Lansing Michigan 48824

National Cheng Kung University Tainan 70101

National Institute of Science Education and Research Bhubaneswar 751005 India

National Research Nuclear University MEPhI Moscow 115409 Russia

Nuclear Physics Institute AS CR 250 68 Prague Czech Republic

Ohio State University Columbus Ohio 43210

Panjab University Chandigarh 160014 India

Pennsylvania State University University Park Pennsylvania 16802

Purdue University West Lafayette Indiana 47907

Pusan National University Pusan 46241 Korea

Rice University Houston Texas 77251

Shandong University Jinan Shandong 250100

Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201800

State University of New York Stony Brook New York 11794

Temple University Philadelphia Pennsylvania 19122

Texas A and M University College Station Texas 77843

Tsinghua University Beijing 100084

United States Naval Academy Annapolis Maryland 21402

University of California Berkeley California 94720

University of California Davis California 95616

University of California Los Angeles California 90095

University of Houston Houston Texas 77204

University of Illinois at Chicago Chicago Illinois 60607

University of Jammu Jammu 180001 India

University of Kentucky Lexington Kentucky 40506 0055

University of Rajasthan Jaipur 302004 India

University of Science and Technology of China Hefei Anhui 230026

University of Texas Austin Texas 78712

Valparaiso University Valparaiso Indiana 46383

Variable Energy Cyclotron Centre Kolkata 700064 India

Warsaw University of Technology Warsaw 00 661 Poland

Wayne State University Detroit Michigan 48201

World Laboratory for Cosmology and Particle Physics Cairo 11571 Egypt

Yale University New Haven Connecticut 06520

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