Nuclear Dependence of the Transverse Single-Spin Asymmetry in the Production of Charged Hadrons at Forward Rapidity in Polarized p+p, p+Al, and p+Au Collisions at sNN =200 GeV

(PHENIX Collaboration)

doi:10.1103/PhysRevLett.123.122001

Nuclear Dependence of the Transverse Single-Spin Asymmetry in the Production of Charged Hadrons at Forward Rapidity in Polarized p+p, p+Al, and p+Au Collisions at sNN =200 GeV

(PHENIX Collaboration)

Research output: Contribution to journal › Article

Abstract

We report on the nuclear dependence of transverse single-spin asymmetries (TSSAs) in the production of positively charged hadrons in polarized p↑+p, p↑+Al, and p↑+Au collisions at sNN=200 GeV. The measurements have been performed at forward rapidity (1.4<η<2.4) over the range of transverse momentum (1.8<pT<7.0 GeV/c) and Feynman x (0.1<xF<0.2). We observed positive asymmetries for positively charged hadrons in p↑+p collisions, and significantly reduced asymmetries in p↑+A collisions. These results reveal a nuclear dependence of TSSAs for charged-hadron production in a regime where perturbative techniques are applicable. These results provide new opportunities to use p↑+A collisions as a tool to investigate the rich phenomena behind TSSAs in hadronic collisions and to use TSSAs as a new handle in studying small-system collisions.

Original language	English
Article number	122001
Journal	Physical review letters
Volume	123
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevLett.123.122001
Publication status	Published - 2019 Sep 17

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ASJC Scopus subject areas

Physics and Astronomy(all)

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(PHENIX Collaboration) (2019). Nuclear Dependence of the Transverse Single-Spin Asymmetry in the Production of Charged Hadrons at Forward Rapidity in Polarized p+p, p+Al, and p+Au Collisions at sNN =200 GeV. Physical review letters, 123(12), [122001]. https://doi.org/10.1103/PhysRevLett.123.122001

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title = "Nuclear Dependence of the Transverse Single-Spin Asymmetry in the Production of Charged Hadrons at Forward Rapidity in Polarized p+p, p+Al, and p+Au Collisions at sNN =200 GeV",

abstract = "We report on the nuclear dependence of transverse single-spin asymmetries (TSSAs) in the production of positively charged hadrons in polarized p↑+p, p↑+Al, and p↑+Au collisions at sNN=200 GeV. The measurements have been performed at forward rapidity (1.4<η<2.4) over the range of transverse momentum (1.8",

author = "{(PHENIX Collaboration)} and C. Aidala and Y. Akiba and M. Alfred and V. Andrieux and N. Apadula and H. Asano and B. Azmoun and V. Babintsev and Bandara, {N. S.} and Barish, {K. N.} and S. Bathe and A. Bazilevsky and M. Beaumier and R. Belmont and A. Berdnikov and Y. Berdnikov and Blau, {D. S.} and Bok, {J. S.} and Brooks, {M. L.} and J. Bryslawskyj and V. Bumazhnov and S. Campbell and {Canoa Roman}, V. and R. Cervantes and Chi, {C. Y.} and M. Chiu and Choi, {I. J.} and Choi, {J. B.} and Z. Citron and M. Connors and N. Cronin and M. Csan{\'a}d and T. Cs{\"o}rgo and Danley, {T. W.} and Daugherity, {M. S.} and G. David and K. Deblasio and K. Dehmelt and A. Denisov and A. Deshpande and Desmond, {E. J.} and A. Dion and D. Dixit and Do, {J. H.} and A. Drees and Drees, {K. A.} and Durham, {J. M.} and A. Durum and B. Hong and Yoo, {J. H.}",

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AU - (PHENIX Collaboration)

AU - Aidala, C.

AU - Akiba, Y.

AU - Alfred, M.

AU - Andrieux, V.

AU - Apadula, N.

AU - Asano, H.

AU - Azmoun, B.

AU - Babintsev, V.

AU - Bandara, N. S.

AU - Barish, K. N.

AU - Bathe, S.

AU - Bazilevsky, A.

AU - Beaumier, M.

AU - Belmont, R.

AU - Berdnikov, A.

AU - Berdnikov, Y.

AU - Blau, D. S.

AU - Bok, J. S.

AU - Brooks, M. L.

AU - Bryslawskyj, J.

AU - Bumazhnov, V.

AU - Campbell, S.

AU - Canoa Roman, V.

AU - Cervantes, R.

AU - Chi, C. Y.

AU - Chiu, M.

AU - Choi, I. J.

AU - Choi, J. B.

AU - Citron, Z.

AU - Connors, M.

AU - Cronin, N.

AU - Csanád, M.

AU - Csörgo, T.

AU - Danley, T. W.

AU - Daugherity, M. S.

AU - David, G.

AU - Deblasio, K.

AU - Dehmelt, K.

AU - Denisov, A.

AU - Deshpande, A.

AU - Desmond, E. J.

AU - Dion, A.

AU - Dixit, D.

AU - Do, J. H.

AU - Drees, A.

AU - Drees, K. A.

AU - Durham, J. M.

AU - Durum, A.

AU - Hong, B.

AU - Yoo, J. H.

PY - 2019/9/17

Y1 - 2019/9/17

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10.1103/PhysRevLett.123.122001