Transverse single-spin asymmetries of midrapidity π0 and η mesons in polarized p+p collisions at sqrt(s)=200 GeV (CROSBI ID 306973)
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Podaci o odgovornosti
Acharya U.A. ; ... ; Makek, Mihael ; ... ; Vukman, Nikola ; ... ; Zou, L.
PHENIX Collaboration
engleski
Transverse single-spin asymmetries of midrapidity π0 and η mesons in polarized p+p collisions at sqrt(s)=200 GeV
We present a measurement of the transverse single- spin asymmetry for π0 and η mesons in p+p collisions in the pseudorapidity range |η|<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, π0 and η 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.
spin ; asymmetry ; midrapidity ; p+p ; 200 GeV ; PHENIX ; RHIC
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Podaci o izdanju
103 (5)
2021.
052009
10
objavljeno
2470-0010
2470-0029
10.1103/physrevd.103.052009