Transverse single-spin asymmetries of midrapidity π<SUP>0</SUP> and η mesons in polarized <i>p</i> plus <i>p</i> collisions at √<i>s</i>=200 GeV


Acharya U. A., Aidala C., Akiba Y., Alfred M., Andrieux V., Apadula N., ...Daha Fazla

PHYSICAL REVIEW D, cilt.103, sa.5, 2021 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 103 Sayı: 5
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1103/physrevd.103.052009
  • Dergi Adı: PHYSICAL REVIEW D
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, INSPEC, zbMATH
  • Yıldız Teknik Üniversitesi Adresli: Hayır

Özet

We present a measurement of the transverse single-spin asymmetry for pi(0) and eta mesons in p(up arrow) + p collisions in the pseudorapidity range vertical bar eta vertical bar < 0.35 and at a center-of-mass energy of 200 GeV with the PHENIX detector at the Relativistic Heavy Ion Collider. In comparison with previous measurements in this kinematic region, these results have factor-of-3-smaller uncertainties. As hadrons, pi(0) and eta mesons are sensitive to both initial- and final-state nonperturbative effects for a mix of parton flavors. Comparisons of the differences in their transverse single-spin asymmetries have the potential to disentangle the possible effects of strangeness, isospin, or mass. These results can constrain the twist-3 trigluon collinear correlation function as well as the gluon Sivers function.