J/ψ suppression at forward rapidity in Au + Au collisions at √sNN=39 and 62.4 GeV

PHENIX Collaboration

doi:10.1103/PhysRevC.86.064901

J/ψ suppression at forward rapidity in Au + Au collisions at √s_NN=39 and 62.4 GeV

PHENIX Collaboration

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29 Scopus citations

Abstract

We present measurements of the J/ψ invariant yields in √s _NN=39 and 62.4 GeV Au + Au collisions at forward rapidity (1.2<|y|<2.2). Invariant yields are presented as a function of both collision centrality and transverse momentum. Nuclear modifications are obtained for central relative to peripheral Au + Au collisions (R_CP) and for various centrality selections in Au + Au relative to scaled p + p cross sections obtained from other measurements (R_AA). The observed suppression patterns at 39 and 62.4 GeV are quite similar to those previously measured at 200 GeV. This similar suppression presents a challenge to theoretical models that contain various competing mechanisms with different energy dependencies, some of which cause suppression and others enhancement.

Original language	English
Article number	064901
Journal	Physical Review C - Nuclear Physics
Volume	86
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.86.064901
State	Published - 6 Dec 2012
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevC.86.064901

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@article{27a6cb1d988b41ebbd5d96a5ac9304a0,

title = "J/ψ suppression at forward rapidity in Au + Au collisions at √sNN=39 and 62.4 GeV",

abstract = "We present measurements of the J/ψ invariant yields in √s NN=39 and 62.4 GeV Au + Au collisions at forward rapidity (1.2<|y|<2.2). Invariant yields are presented as a function of both collision centrality and transverse momentum. Nuclear modifications are obtained for central relative to peripheral Au + Au collisions (RCP) and for various centrality selections in Au + Au relative to scaled p + p cross sections obtained from other measurements (RAA). The observed suppression patterns at 39 and 62.4 GeV are quite similar to those previously measured at 200 GeV. This similar suppression presents a challenge to theoretical models that contain various competing mechanisms with different energy dependencies, some of which cause suppression and others enhancement.",

author = "{PHENIX Collaboration} and A. Adare and C. Aidala and Ajitanand, {N. N.} and Y. Akiba and R. Akimoto and H. Al-Ta'Ani and J. Alexander and A. Angerami and K. Aoki and N. Apadula and Y. Aramaki and H. Asano and Aschenauer, {E. C.} and Atomssa, {E. T.} and Awes, {T. C.} and B. Azmoun and V. Babintsev and M. Bai and B. Bannier and Barish, {K. N.} and B. Bassalleck and S. Bathe and V. Baublis and S. Baumgart and A. Bazilevsky and R. Belmont and A. Berdnikov and Y. Berdnikov and X. Bing and Blau, {D. S.} and K. Boyle and Brooks, {M. L.} and H. Buesching and V. Bumazhnov and S. Butsyk and S. Campbell and P. Castera and Chen, {C. H.} and Chi, {C. Y.} and M. Chiu and Choi, {I. J.} and Choi, {J. B.} and S. Choi and Choudhury, {R. K.} and P. Christiansen and T. Chujo and O. Chvala and V. Cianciolo and Z. Citron and Cole, {B. A.}",

year = "2012",

month = dec,

day = "6",

doi = "10.1103/PhysRevC.86.064901",

language = "English",

volume = "86",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

number = "6",

}

TY - JOUR

T1 - J/ψ suppression at forward rapidity in Au + Au collisions at √sNN=39 and 62.4 GeV

AU - PHENIX Collaboration

AU - Adare, A.

AU - Aidala, C.

AU - Ajitanand, N. N.

AU - Akiba, Y.

AU - Akimoto, R.

AU - Al-Ta'Ani, H.

AU - Alexander, J.

AU - Angerami, A.

AU - Aoki, K.

AU - Apadula, N.

AU - Aramaki, Y.

AU - Asano, H.

AU - Aschenauer, E. C.

AU - Atomssa, E. T.

AU - Awes, T. C.

AU - Azmoun, B.

AU - Babintsev, V.

AU - Bai, M.

AU - Bannier, B.

AU - Barish, K. N.

AU - Bassalleck, B.

AU - Bathe, S.

AU - Baublis, V.

AU - Baumgart, S.

AU - Bazilevsky, A.

AU - Belmont, R.

AU - Berdnikov, A.

AU - Berdnikov, Y.

AU - Bing, X.

AU - Blau, D. S.

AU - Boyle, K.

AU - Brooks, M. L.

AU - Buesching, H.

AU - Bumazhnov, V.

AU - Butsyk, S.

AU - Campbell, S.

AU - Castera, P.

AU - Chen, C. H.

AU - Chi, C. Y.

AU - Chiu, M.

AU - Choi, I. J.

AU - Choi, J. B.

AU - Choi, S.

AU - Choudhury, R. K.

AU - Christiansen, P.

AU - Chujo, T.

AU - Chvala, O.

AU - Cianciolo, V.

AU - Citron, Z.

AU - Cole, B. A.

PY - 2012/12/6

Y1 - 2012/12/6

N2 - We present measurements of the J/ψ invariant yields in √s NN=39 and 62.4 GeV Au + Au collisions at forward rapidity (1.2<|y|<2.2). Invariant yields are presented as a function of both collision centrality and transverse momentum. Nuclear modifications are obtained for central relative to peripheral Au + Au collisions (RCP) and for various centrality selections in Au + Au relative to scaled p + p cross sections obtained from other measurements (RAA). The observed suppression patterns at 39 and 62.4 GeV are quite similar to those previously measured at 200 GeV. This similar suppression presents a challenge to theoretical models that contain various competing mechanisms with different energy dependencies, some of which cause suppression and others enhancement.

AB - We present measurements of the J/ψ invariant yields in √s NN=39 and 62.4 GeV Au + Au collisions at forward rapidity (1.2<|y|<2.2). Invariant yields are presented as a function of both collision centrality and transverse momentum. Nuclear modifications are obtained for central relative to peripheral Au + Au collisions (RCP) and for various centrality selections in Au + Au relative to scaled p + p cross sections obtained from other measurements (RAA). The observed suppression patterns at 39 and 62.4 GeV are quite similar to those previously measured at 200 GeV. This similar suppression presents a challenge to theoretical models that contain various competing mechanisms with different energy dependencies, some of which cause suppression and others enhancement.

UR - http://www.scopus.com/inward/record.url?scp=84871641984&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.86.064901

DO - 10.1103/PhysRevC.86.064901

M3 - Article

AN - SCOPUS:84871641984

SN - 0556-2813

VL - 86

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 6

M1 - 064901

ER -

J/ψ suppression at forward rapidity in Au + Au collisions at √s_NN=39 and 62.4 GeV

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