2024-03-29T13:32:08Z
https://tsukuba.repo.nii.ac.jp/oai
oai:tsukuba.repo.nii.ac.jp:00052325
2022-07-18T23:52:08Z
117:6545
117:7586
3:62:5598:84
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
江角, 晋一
エスミ, シンイチ
ESUMI, ShinIchi
新井田, 貴文
ニイダ, タカフミ
NIIDA, Takafumi
小沢, 恭一郎
オザワ, キョウイチロウ
OZAWA, Kyoichiro
PHENI Collaboration
open access
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
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.
American Physical Society
2018-07
eng
journal article
VoR
http://hdl.handle.net/2241/00157748
https://tsukuba.repo.nii.ac.jp/records/52325
https://doi.org/10.1103/PhysRevD.98.012006
2470-0010
AA00773624
Physical review D
98
1
012006
https://tsukuba.repo.nii.ac.jp/record/52325/files/PRD_98-1-012006.pdf
application/pdf
632.1 kB
2019-09-27