Physics Letters B (Oct 2019)

Measurement of inclusive J/ψ suppression in Au+Au collisions at sNN=200 GeV through the dimuon channel at STAR

  • J. Adam,
  • L. Adamczyk,
  • J.R. Adams,
  • J.K. Adkins,
  • G. Agakishiev,
  • M.M. Aggarwal,
  • Z. Ahammed,
  • I. Alekseev,
  • D.M. Anderson,
  • R. Aoyama,
  • A. Aparin,
  • D. Arkhipkin,
  • E.C. Aschenauer,
  • M.U. Ashraf,
  • F. Atetalla,
  • A. Attri,
  • G.S. Averichev,
  • V. Bairathi,
  • K. Barish,
  • A.J. Bassill,
  • A. Behera,
  • R. Bellwied,
  • A. Bhasin,
  • A.K. Bhati,
  • J. Bielcik,
  • J. Bielcikova,
  • L.C. Bland,
  • I.G. Bordyuzhin,
  • J.D. Brandenburg,
  • A.V. Brandin,
  • J. Bryslawskyj,
  • I. Bunzarov,
  • J. Butterworth,
  • H. Caines,
  • M. Calderón de la Barca Sánchez,
  • D. Cebra,
  • I. Chakaberia,
  • P. Chaloupka,
  • B.K. Chan,
  • F.-H. Chang,
  • Z. Chang,
  • N. Chankova-Bunzarova,
  • A. Chatterjee,
  • S. Chattopadhyay,
  • J.H. Chen,
  • X. Chen,
  • J. Cheng,
  • M. Cherney,
  • W. Christie,
  • H.J. Crawford,
  • M. Csanád,
  • S. Das,
  • T.G. Dedovich,
  • I.M. Deppner,
  • A.A. Derevschikov,
  • L. Didenko,
  • C. Dilks,
  • X. Dong,
  • J.L. Drachenberg,
  • J.C. Dunlop,
  • T. Edmonds,
  • N. Elsey,
  • J. Engelage,
  • G. Eppley,
  • R. Esha,
  • S. Esumi,
  • O. Evdokimov,
  • J. Ewigleben,
  • O. Eyser,
  • R. Fatemi,
  • S. Fazio,
  • P. Federic,
  • J. Fedorisin,
  • Y. Feng,
  • P. Filip,
  • E. Finch,
  • Y. Fisyak,
  • L. Fulek,
  • C.A. Gagliardi,
  • T. Galatyuk,
  • F. Geurts,
  • A. Gibson,
  • K. Gopal,
  • D. Grosnick,
  • A. Gupta,
  • W. Guryn,
  • A.I. Hamad,
  • A. Hamed,
  • J.W. Harris,
  • L. He,
  • S. Heppelmann,
  • S. Heppelmann,
  • N. Herrmann,
  • L. Holub,
  • Y. Hong,
  • S. Horvat,
  • B. Huang,
  • H.Z. Huang,
  • S.L. Huang,
  • T. Huang,
  • X. Huang,
  • T.J. Humanic,
  • P. Huo,
  • G. Igo,
  • W.W. Jacobs,
  • C. Jena,
  • A. Jentsch,
  • Y. Ji,
  • J. Jia,
  • K. Jiang,
  • S. Jowzaee,
  • X. Ju,
  • E.G. Judd,
  • S. Kabana,
  • S. Kagamaster,
  • D. Kalinkin,
  • K. Kang,
  • D. Kapukchyan,
  • K. Kauder,
  • H.W. Ke,
  • D. Keane,
  • A. Kechechyan,
  • M. Kelsey,
  • Y.V. Khyzhniak,
  • D.P. Kikoła,
  • C. Kim,
  • T.A. Kinghorn,
  • I. Kisel,
  • A. Kisiel,
  • M. Kocan,
  • L. Kochenda,
  • L.K. Kosarzewski,
  • L. Kramarik,
  • P. Kravtsov,
  • K. Krueger,
  • N. Kulathunga Mudiyanselage,
  • L. Kumar,
  • R. Kunnawalkam Elayavalli,
  • J.H. Kwasizur,
  • R. Lacey,
  • J.M. Landgraf,
  • J. Lauret,
  • A. Lebedev,
  • R. Lednicky,
  • J.H. Lee,
  • C. Li,
  • W. Li,
  • W. Li,
  • X. Li,
  • Y. Li,
  • Y. Liang,
  • R. Licenik,
  • T. Lin,
  • A. Lipiec,
  • M.A. Lisa,
  • F. Liu,
  • H. Liu,
  • P. Liu,
  • P. Liu,
  • T. Liu,
  • X. Liu,
  • Y. Liu,
  • Z. Liu,
  • T. Ljubicic,
  • W.J. Llope,
  • M. Lomnitz,
  • R.S. Longacre,
  • S. Luo,
  • X. Luo,
  • G.L. Ma,
  • L. Ma,
  • R. Ma,
  • Y.G. Ma,
  • N. Magdy,
  • R. Majka,
  • D. Mallick,
  • S. Margetis,
  • C. Markert,
  • H.S. Matis,
  • O. Matonoha,
  • J.A. Mazer,
  • K. Meehan,
  • J.C. Mei,
  • N.G. Minaev,
  • S. Mioduszewski,
  • D. Mishra,
  • B. Mohanty,
  • M.M. Mondal,
  • I. Mooney,
  • Z. Moravcova,
  • D.A. Morozov,
  • Md. Nasim,
  • K. Nayak,
  • J.M. Nelson,
  • D.B. Nemes,
  • M. Nie,
  • G. Nigmatkulov,
  • T. Niida,
  • L.V. Nogach,
  • T. Nonaka,
  • G. Odyniec,
  • A. Ogawa,
  • K. Oh,
  • S. Oh,
  • V.A. Okorokov,
  • B.S. Page,
  • R. Pak,
  • Y. Panebratsev,
  • B. Pawlik,
  • D. Pawlowska,
  • H. Pei,
  • C. Perkins,
  • R.L. Pintér,
  • J. Pluta,
  • J. Porter,
  • M. Posik,
  • N.K. Pruthi,
  • M. Przybycien,
  • J. Putschke,
  • A. Quintero,
  • S.K. Radhakrishnan,
  • S. Ramachandran,
  • R.L. Ray,
  • R. Reed,
  • H.G. Ritter,
  • J.B. Roberts,
  • O.V. Rogachevskiy,
  • J.L. Romero,
  • L. Ruan,
  • J. Rusnak,
  • O. Rusnakova,
  • N.R. Sahoo,
  • P.K. Sahu,
  • S. Salur,
  • J. Sandweiss,
  • J. Schambach,
  • W.B. Schmidke,
  • N. Schmitz,
  • B.R. Schweid,
  • F. Seck,
  • J. Seger,
  • M. Sergeeva,
  • R. Seto,
  • P. Seyboth,
  • N. Shah,
  • E. Shahaliev,
  • P.V. Shanmuganathan,
  • M. Shao,
  • F. Shen,
  • W.Q. Shen,
  • S.S. Shi,
  • Q.Y. Shou,
  • E.P. Sichtermann,
  • S. Siejka,
  • R. Sikora,
  • M. Simko,
  • J. Singh,
  • S. Singha,
  • D. Smirnov,
  • N. Smirnov,
  • W. Solyst,
  • P. Sorensen,
  • H.M. Spinka,
  • B. Srivastava,
  • T.D.S. Stanislaus,
  • M. Stefaniak,
  • D.J. Stewart,
  • M. Strikhanov,
  • B. Stringfellow,
  • A.A.P. Suaide,
  • T. Sugiura,
  • M. Sumbera,
  • B. Summa,
  • X.M. Sun,
  • Y. Sun,
  • Y. Sun,
  • B. Surrow,
  • D.N. Svirida,
  • P. Szymanski,
  • A.H. Tang,
  • Z. Tang,
  • A. Taranenko,
  • T. Tarnowsky,
  • J.H. Thomas,
  • A.R. Timmins,
  • D. Tlusty,
  • T. Todoroki,
  • M. Tokarev,
  • C.A. Tomkiel,
  • S. Trentalange,
  • R.E. Tribble,
  • P. Tribedy,
  • S.K. Tripathy,
  • O.D. Tsai,
  • B. Tu,
  • Z. Tu,
  • T. Ullrich,
  • D.G. Underwood,
  • I. Upsal,
  • G. Van Buren,
  • J. Vanek,
  • A.N. Vasiliev,
  • I. Vassiliev,
  • F. Videbæk,
  • S. Vokal,
  • S.A. Voloshin,
  • F. Wang,
  • G. Wang,
  • P. Wang,
  • Y. Wang,
  • Y. Wang,
  • J.C. Webb,
  • L. Wen,
  • G.D. Westfall,
  • H. Wieman,
  • S.W. Wissink,
  • R. Witt,
  • Y. Wu,
  • Z.G. Xiao,
  • G. Xie,
  • W. Xie,
  • H. Xu,
  • N. Xu,
  • Q.H. Xu,
  • Y.F. Xu,
  • Z. Xu,
  • C. Yang,
  • Q. Yang,
  • S. Yang,
  • Y. Yang,
  • Z. Yang,
  • Z. Ye,
  • Z. Ye,
  • L. Yi,
  • K. Yip,
  • I.-K. Yoo,
  • H. Zbroszczyk,
  • W. Zha,
  • D. Zhang,
  • L. Zhang,
  • S. Zhang,
  • S. Zhang,
  • X.P. Zhang,
  • Y. Zhang,
  • Z. Zhang,
  • J. Zhao,
  • C. Zhong,
  • C. Zhou,
  • X. Zhu,
  • Z. Zhu,
  • M. Zurek,
  • M. Zyzak

Journal volume & issue
Vol. 797

Abstract

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J/ψ suppression has long been considered a sensitive signature of the formation of the Quark-Gluon Plasma (QGP) in relativistic heavy-ion collisions. In this letter, we present the first measurement of inclusive J/ψ production at mid-rapidity through the dimuon decay channel in Au+Au collisions at sNN=200 GeV with the STAR experiment. These measurements became possible after the installation of the Muon Telescope Detector was completed in 2014. The J/ψ yields are measured in a wide transverse momentum (pT) range of 0.15 GeV/c to 12 GeV/c from central to peripheral collisions. They extend the kinematic reach of previous measurements at RHIC with improved precision. In the 0-10% most central collisions, the J/ψ yield is suppressed by a factor of approximately 3 for pT>5 GeV/c relative to that in p+p collisions scaled by the number of binary nucleon-nucleon collisions. The J/ψ nuclear modification factor displays little dependence on pT in all centrality bins. Model calculations can qualitatively describe the data, providing further evidence for the color-screening effect experienced by J/ψ mesons in the QGP. Keywords: Quark-gluon plasma, Color-screening, J/ψ suppression