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)

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2 Scopus citations

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 - 1 Oct 2023
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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