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Single-spin asymmetry of J/ψ production in p+p , p+Al , and p+Au collisions with transversely polarized proton beams at sNN=200 GeV (CROSBI ID 261043)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

(PHENIX Collaboration) Aidala, C. ; ... ; Makek, Mihael ; ... ; Vukman, Nikola ; ... ; Zou, L. Single-spin asymmetry of J/ψ production in p+p , p+Al , and p+Au collisions with transversely polarized proton beams at sNN=200 GeV // Physical review. D, 98 (2018), 1; 012006, 11. doi: 10.1103/physrevd.98.012006

Podaci o odgovornosti

Aidala, C. ; ... ; Makek, Mihael ; ... ; Vukman, Nikola ; ... ; Zou, L.

PHENIX Collaboration

engleski

Single-spin asymmetry of J/ψ production in p+p , p+Al , and p+Au collisions with transversely polarized proton beams at sNN=200 GeV

We report the transverse single-spin asymmetries of J/ψ production at forward and backward rapidity, 1.2<|y|<2.2, as a function of J/ψ transverse momentum (pT) and Feynman-x (xF). The data analyzed were recorded by the PHENIX experiment at the Relativistic Heavy Ion Collider in 2015 from p+p, p+Al, and p+Au collisions with transversely polarized proton beams at sNN=200 GeV. At this collision energy, single-spin asymmetries for heavy-flavor particle production of p+p collisions provide access to the spin- dependent gluon distribution and higher-twist correlation functions inside the nucleon, such as the gluon Qiu- Sterman and trigluon correlation functions. Proton+nucleus collisions offer an excellent opportunity to study nuclear effects on the correlation functions. The data indicate a positive asymmetry at the two-standard-deviation level in the p+p data for 2 GeV/c<pT<10 GeV/c at backward rapidity and negative asymmetries at the two-standard- deviation level in the p+Au data for pT<2 GeV/c at both forward and backward rapidity, while in p+Al collisions the asymmetries are consistent with zero within the range of experimental uncertainties.

asymmetry ; jpsi ; PHENIX

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

Podaci o izdanju

98 (1)

2018.

012006

11

objavljeno

2470-0010

2470-0029

10.1103/physrevd.98.012006

Povezanost rada

Fizika

Poveznice
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