Transverse single-spin asymmetry of forward n mesons in p + p collisions at √s = 200 GeV

PHENIX Collaboration Spokesperson

doi:10.1103/6VNQ-5HFX

Transverse single-spin asymmetry of forward n mesons in p + p collisions at √s = 200 GeV

PHENIX Collaboration Spokesperson

University of Debrecen
HUN-RENATOMKI
Georgia State University
MST-8, Los Alamos National Laboratory
University of Michigan, Ann Arbor
Stony Brook University
Abilene Christian University
RIKEN Nishina Center for Accelerator-Based Science
Riken BNL Research Center
University of Tokyo
Iowa State University
St. Petersburg State Polytechnical University
High Energy Accelerator Research Organization (KEK)
Kyoto University
Oak Ridge National Laboratory
Brookhaven National Laboratory Physics Department
Kurchatov Institute
Brookhaven National Laboratory
China Institute of Atomic Energy
University of California, Riverside
Baruch College
Petersburg Nuclear Physics Institute (PNPI)
University of Colorado Boulder
University of North Carolina at Greensboro
Vanderbilt University
Kurchatov Institute
National Research Nuclear University MEPhI
New Mexico State University
University of New Mexico
Columbia University
Banaras Hindu University
University of Illinois at Urbana-Champaign
Chonbuk National University
Seoul National University
Lund University
University of Tsukuba
Muhlenberg College
Eötvös Loránd University
Institute of Technology
Wigner Research Centre for Physics
University of Maryland, College Park
Yonsei University
Rikkyo University
Charles University
Ohio University
Florida State University
Nagasaki Institute of Applied Science
University of Tennessee
Lawrence Livermore National Laboratory
Augustana University
Ewha Womans University
Hiroshima University
Korea University
Japan Atomic Energy Agency
Myongji University
Université Paris-Saclay
Hanyang University
UMass Amherst
Helsinki Institute of Physics
Sungkyunkwan University
Weizmann Institute of Science Israel
University of Zagreb
Bhabha Atomic Research Centre
Tokyo Institute of Technology
University of Zambia
Institute for Nuclear Research of the Russian Academy of Sciences
Mississippi State University
United States Merchant Marine Academy
Nara Women's University
Czech Technical University in Prague
Institute of Physics of the Czech Academy of Sciences
Lahore University of Management Sciences

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

Utilizing the 2012 transversely polarized proton data from the Relativistic Heavy Ion Collider at Brookhaven National Laboratory, the forward n-meson transverse single-spin asymmetry (A_N) was measured for p۴ + p collisions at ١/s = 200 GeV as a function of Feynman-x (x_F) for 0.2 < jx_Fj < 0.8 and transverse momentum (p_T) for 1.0 < p_T < 5.0 GeV=c. Large asymmetries at positive x_F are observed (hA_Ni = 0.086 ± 0.019), agreeing well with previous measurements of n⁰ and n A_N, but with reach to higher x_F and p_T. The contribution of initial-state spin-momentum correlations to the asymmetry, as calculated in the collinear twist-3 framework, appears insufficient to describe the data.

langue originale	Anglais
Numéro d'article	072006
journal	Physical Review D
Volume	113
Numéro de publication	7
Les DOIs	https://doi.org/10.1103/6VNQ-5HFX
état	Publié - 1 janv. 2026

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10.1103/6VNQ-5HFX

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@article{6c45ae5f627f4346b5790531eaf8aa59,

title = "Transverse single-spin asymmetry of forward n mesons in p + p collisions at √s = 200 GeV",

abstract = "Utilizing the 2012 transversely polarized proton data from the Relativistic Heavy Ion Collider at Brookhaven National Laboratory, the forward n-meson transverse single-spin asymmetry (AN) was measured for p۴ + p collisions at ١/s = 200 GeV as a function of Feynman-x (xF) for 0.2 < jxFj < 0.8 and transverse momentum (pT) for 1.0 < pT < 5.0 GeV=c. Large asymmetries at positive xF are observed (hANi = 0.086 ± 0.019), agreeing well with previous measurements of n0 and n AN, but with reach to higher xF and pT. The contribution of initial-state spin-momentum correlations to the asymmetry, as calculated in the collinear twist-3 framework, appears insufficient to describe the data.",

author = "\{PHENIX Collaboration Spokesperson\} and Abdulameer, \{N. J.\} and U. Acharya and C. Aidala and Ajitanand, \{N. N.\} and Y. Akiba and R. Akimoto and J. Alexander and D. Anderson and S. Antsupov and K. Aoki and N. Apadnia and H. Asano and Atomssa, \{E. T.\} and Awes, \{T. C.\} and B. Azmoun and V. Babintsev and M. Bai and X. Bai and B. Bannier and E. Bannikov and Barish, \{K. N.\} and S. Bathe and V. Banblis and C. Baumann and S. Baumgart and A. Bazilevsky and M. Beaumier and R. Belmont and A. Berdnikov and Y. Berdnikov and L. Bichon and D. Black and B. Blankenship and Blau, \{D. S.\} and Bok, \{J. S.\} and V. Borisov and K. Boyle and Brooks, \{M. L.\} and J. Bryslawskyj and H. Buesching and V. Bumazhnov and S. Butsyk and S. Campbell and P. Chaitanya and Chen, \{C. H.\} and D. Chen and O. Drapier and F. Fleuret and M. Gonin and \{de Cassagnac\}, \{R. Granier\}",

note = "Publisher Copyright: 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{\textquoteright}s title, journal citation, and DOI. Funded by SCOAP3",

year = "2026",

month = jan,

day = "1",

doi = "10.1103/6VNQ-5HFX",

language = "English",

volume = "113",

journal = "Physical Review D",

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T1 - Transverse single-spin asymmetry of forward n mesons in p + p collisions at √s = 200 GeV

AU - PHENIX Collaboration Spokesperson

AU - Abdulameer, N. J.

AU - Acharya, U.

AU - Aidala, C.

AU - Ajitanand, N. N.

AU - Akiba, Y.

AU - Akimoto, R.

AU - Alexander, J.

AU - Anderson, D.

AU - Antsupov, S.

AU - Aoki, K.

AU - Apadnia, N.

AU - Asano, H.

AU - Atomssa, E. T.

AU - Awes, T. C.

AU - Azmoun, B.

AU - Babintsev, V.

AU - Bai, M.

AU - Bai, X.

AU - Bannier, B.

AU - Bannikov, E.

AU - Barish, K. N.

AU - Bathe, S.

AU - Banblis, V.

AU - Baumann, C.

AU - Baumgart, S.

AU - Bazilevsky, A.

AU - Beaumier, M.

AU - Belmont, R.

AU - Berdnikov, A.

AU - Berdnikov, Y.

AU - Bichon, L.

AU - Black, D.

AU - Blankenship, B.

AU - Blau, D. S.

AU - Bok, J. S.

AU - Borisov, V.

AU - Boyle, K.

AU - Brooks, M. L.

AU - Bryslawskyj, J.

AU - Buesching, H.

AU - Bumazhnov, V.

AU - Butsyk, S.

AU - Campbell, S.

AU - Chaitanya, P.

AU - Chen, C. H.

AU - Chen, D.

AU - Drapier, O.

AU - Fleuret, F.

AU - Gonin, M.

AU - de Cassagnac, R. Granier

N1 - Publisher Copyright: 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

PY - 2026/1/1

Y1 - 2026/1/1

N2 - Utilizing the 2012 transversely polarized proton data from the Relativistic Heavy Ion Collider at Brookhaven National Laboratory, the forward n-meson transverse single-spin asymmetry (AN) was measured for p۴ + p collisions at ١/s = 200 GeV as a function of Feynman-x (xF) for 0.2 < jxFj < 0.8 and transverse momentum (pT) for 1.0 < pT < 5.0 GeV=c. Large asymmetries at positive xF are observed (hANi = 0.086 ± 0.019), agreeing well with previous measurements of n0 and n AN, but with reach to higher xF and pT. The contribution of initial-state spin-momentum correlations to the asymmetry, as calculated in the collinear twist-3 framework, appears insufficient to describe the data.

AB - Utilizing the 2012 transversely polarized proton data from the Relativistic Heavy Ion Collider at Brookhaven National Laboratory, the forward n-meson transverse single-spin asymmetry (AN) was measured for p۴ + p collisions at ١/s = 200 GeV as a function of Feynman-x (xF) for 0.2 < jxFj < 0.8 and transverse momentum (pT) for 1.0 < pT < 5.0 GeV=c. Large asymmetries at positive xF are observed (hANi = 0.086 ± 0.019), agreeing well with previous measurements of n0 and n AN, but with reach to higher xF and pT. The contribution of initial-state spin-momentum correlations to the asymmetry, as calculated in the collinear twist-3 framework, appears insufficient to describe the data.

UR - https://www.scopus.com/pages/publications/105038128561

U2 - 10.1103/6VNQ-5HFX

DO - 10.1103/6VNQ-5HFX

M3 - Article

AN - SCOPUS:105038128561

SN - 2470-0010

VL - 113

JO - Physical Review D

JF - Physical Review D

IS - 7

M1 - 072006

ER -

Transverse single-spin asymmetry of forward n mesons in p + p collisions at √s = 200 GeV

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