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Transverse single-spin asymmetry of charged hadrons at forward and backward rapidity in polarized p+p, p+Al, and p+Au collisions at sNN =200 GeV

  • (PHENIX Collaboration)
  • Czech Technical University in Prague
  • Florida State University
  • MATE
  • Pusan National University
  • RIKEN
  • University of Zambia
  • Hiroshima University
  • Czech Academy of Sciences
  • Russian Research Centre Kurchatov Institute
  • United States Department of Energy
  • Howard University
  • University of Maryland, College Park
  • University of California at Riverside
  • City University of New York
  • University of Colorado Boulder
  • New Mexico State University
  • Rikkyo University
  • University of Tsukuba
  • Korea University
  • Nara Women's University
  • University of New Mexico
  • Lawrence Livermore National Laboratory
  • Columbia University
  • Stony Brook University
  • NRC Kurchatov Institute IHEP
  • Japan Atomic Energy Agency
  • PHENIX Collaboration Spokesperson
  • Vanderbilt University
  • University of Debrecen
  • University of Massachusetts
  • Weizmann Institute of Science
  • University of North Carolina at Greensboro
  • Abilene Christian University
  • Deceased
  • Moscow Engineering Physics Institute

Research output: Contribution to journalJournal articlepeer-review

Abstract

Reported here are transverse single-spin asymmetries (AN) in the production of charged hadrons as a function of transverse momentum (pT) and Feynman-x (xF) in polarized p↑+p, p↑+Al, and p↑+Au collisions at sNN=200 GeV. The measurements have been performed at forward and backward rapidity (1.4<|η|<2.4) over the range of 1.5 GeV/c<pT<7.0 GeV/c and 0.04<|xF|<0.2. A nonzero asymmetry is observed for positively charged hadrons at forward rapidity (xF>0) in p↑+p collisions, whereas the p↑+Al and p↑+Au results show smaller asymmetries. This finding provides new opportunities to investigate the origin of transverse single-spin asymmetries and a tool to study nuclear effects in p+A collisions.

Original languageEnglish
Article number072016
JournalPhysical Review D
Volume108
Issue number7
DOIs
StatePublished - 2023.10.1

Quacquarelli Symonds(QS) Subject Topics

  • Physics & Astronomy

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