Transverse single-spin asymmetry of midrapidity π⁰ and η mesons in p+Au and p+Al collisions at √s__NN= 200 GeV

2023/03/13 by Abdulameer, N. J., Acharya, U., Aidala, C. +319
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex)

paper · doi:10.48550/arxiv.2303.07190

Abstract

Presented are the first measurements of the transverse single-spin asymmetries (A_N) for neutral pions and eta mesons in p+Au and p+Al collisions at √s__NN=200 GeV in the pseudorapidity range |η|<0.35 with the PHENIX detector at the Relativistic Heavy Ion Collider. The asymmetries are consistent with zero, similar to those for midrapidity neutral pions and eta mesons produced in p+p collisions. These measurements show no evidence of additional effects that could potentially arise from the more complex partonic environment present in proton-nucleus collisions.

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