Beam Energy Dependence of Jet-Quenching Effects in Au+Au Collisions at sNN =7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV

Leszek Adamczyk,A. Lebedev,B. K. Srivastava,Takahito Todoroki,Jian Chen,Nasim,K N Barish,H. M. Spinka,G Wang,F.H. Liu,Y Zhang,Grigory Nigmatkulov,Benjamin Schweid,S Mioduszewski,Q. Y. Shou,S. Mizuno,R Fatemi,L. Krauth,Lei Zhou,Y. Fisyak,Y. Pandit,Bernd Surrow,Z. W. Miller,H.G. Ritter,S. Das,D. Smirnov,J. M. Landgraf,S. S. Shi,J. Bryslawskyj,Qian Yang,C Li,S. Heppelmann,Janet Elizabeth Seger,P. Federicova,G. van Nieuwenhuizen,J. Thäder,X. Dong,J. E. Draper,J.W. Harris,K. Kauder,Jay Roberts,Qingnian Xu,C.E. Flores,Jindrich Lidrych,Derek Anderson,Y Yang,Miroslav Simko,Takafumi Niida,Lokesh Kumar,Jie Mei,J. Fedorisin,Y. F. Wu,W. Guryn,A. Taranenko,R. Esha,Z. H. Khan,A Ogawa,Amilkar Quintero,Z. Tang,B Huang,R. Lednicky,M. Tokarev,Adam Gibson,K Kang,Alexander Jentsch,Hanna Paulina Zbroszczyk,I. Alekseev,P. Kravtsov,Peng Huo,G. L. Ma,M. Przybycień,Isaac Upsal,W.Q. Shen,L. C. Bland,M. M. Aggarwal,N. Xu,Wb Schmidke,Guannan Xie,Y. G. Ma,J.M. Butterworth,P. Chaloupka,W.G. Li,T.J. Humanic,J. Bielcikova,Nikita Smirnov,O. Evdokimov,Sevil Salur,Fuqiang Wang,M. Calderon de la Barca Sanchez,O.V. Rogachevskiy,J.H. Thomas,Daniel Brown,D Mishra,Nedialka Chankova-Bunzarova,C. Yang,Y J Sun,Michael G. Cherney,A. K. Bhati,Subhash Singha,Zubayer Ahammed,Sedigheh Jowzaee,D.N. Svirida,Jan Marian Pluta,Z Feng,Maksym Zyzak,Te-Chuan Huang,T. K. Nayak,M. K. Mustafa,W. Xie,T Ljubicic,Liwen Wen,S. Fazio,Ryo Aoyama,J. Schambach,Z Shi,A. H. Tang,S. Vokal,M. Shao,A. Kisiel,Z. Z. Xu,I. Chakaberia,B. Pawlik,M.J. Skoby,C. A. Gagliardi,Ting-lin,R.S. Longacre,T. Nonaka,G. Van Buren,A. Hamed,Siwei Luo,J. L. Zhang,Kun Jiang,X Chen,X.M. Sun,I. Bunzarov,N Magdy,A. Kechechyan,Hua Pei,Matthew Posik,D. Grosnick,Jingqing Zhang,T.D.S. Stanislaus,F. Videbaek,H. W. Ke,Kathryn Meehan,S. H. Zhang,John M. Campbell,I. G. Bordyuzhin,L. Kochenda,W.W. Jacobs,L.G. Efimov,J. Cheng,G. Odyniec,Y. Li,I.K. Yoo,A. Aparin,C. Perkins,Barbara Antonina Trzeciak,Joseph Kwasizur,L. Ruan,Rafał Sikora,D. Tlusty,A. A. P. Suaide,Xi-Wang Luo,L. V. Nogach,Pavol Federic,Z. Ye,G.D. Westfall,M Šumbera,Prithwish Tribedy,R. E. Tribble,J Lauret,J. M. Nelson,J. L. Romero,J.C. Dunlop,Y. Panebratsev,Prashanth Shanmuganathan,N. Kulathunga,D. Cebra,N. G. Minaev,D Arkhipkin,Zhigang Xiao,Lisa,J Bielcik,X. L. Zhu,J. Bouchet,K. Oh,M.N. Strikhanov,N R Sahoo,Abdel Nasser Tawfik,William Llope,T.G. Dedovich,G. Eppley,Anju Bhasin,A. V. Brandin,D.G. Underwood,N. Schmitz,S.A. Voloshin,Maowu Nie,S Ramachandran,Alena Harlenderova,D. L. Olvitt,P. Sørensen,E C Aschenauer,G.J. Igo,Ivan Kisel,D. S. Gunarathne,E. Shahaliev,A. N. Vasiliev,J. K. Adkins,K. Yip,Muhammad Usman Ashraf,H.H. Wieman,Xiang Li,Zhanwen Zhu,J. Fujita,D A Morozov,Helen Louise Caines,H. Z. Huang,Richard Daniel Majka,J Porter,Daniel Kikola,Thorsten Kollegger,Alexander Schmah,M. R. Girard,Z.P. Zhang,S Kabana,J. Jia,J.D. Brandenburg,S. Trentalange,R. Seto,J. Putschke,J. B. Zhao,P. Seyboth,W. Zha,N. Yu,A. F. Kraishan,Miroslav Saur,Sukalyan Chattopadhyay,Ayman Hamad,R Lacey,X. Bai,Branden Summa,M. J. Rehbein,R. G. Reed,S. K. Tripathy,Z. Chang,Xing Zhang,P Filip,Rajarshi Ray,Nilay Shah,S.W. Wissink,Arka Chatterjee,A. A. Derevschikov,Xiang Sun,B. S. Page,Tetsuro Sugiura,Maria Sergeeva,P. K. Sahu,E. Sangaline,X. Huang,Li Yi,K. D. Landry,Chensheng Zhou,A. S. Hirsch,L. Ma,Arabinda Behera,N. K. Pruthi,F.J.M. Geurts,Leszek Kosarzewski,A. R. Timmins,K. Poniatowska,C. Markert,B C. Stringfellow,B. Mohanty,V. Bairathi,O. Rusnakova,Michael Lomnitz,Yizhuang Xu,J. L. Drachenberg,G. Agakishiev,Jun Deng,T. Tarnowsky,HuanZhao Liu,Debasish Mallick,S. B. Nurushev,Jordon Rowe Adams,Yuzhu Guo,J. Rusnak,William Solyst,Rongrong Ma,O. Eyser,C. Dilks,A. Gupta,R. Pak,K. Krueger,S. Horvat,W. Christie,V. A. Okorokov,Rene Bellwied,Jakub Kvapil,E. Finch,E.P. Sichtermann,Shangfeng Yang,L. Didenko,G.S. Averichev,J.H. Lee,Yanfang Liu,Chong Kim,A. Vossen,Jun Xu,H.S. Matis,Jordan Daniel Roth,Justin Ewigleben,Y. Wang,David Kapukchyan,Dmitry Kalinkin,G. Contin,D. Keane,G Webb,S. Margetis,N. N. Ajitanand,Łukasz Fulek,Peifeng Liu,H. J. Crawford,Mriganka Mouli Mondal,O. D. Tsai,P. Bhattarai,Anjali Attri,J. C. Webb,R. Witt,T Ullrich,E. G. Judd,J. Sandweiss,Liang He,Nicholas Elsey,M. Kocmanek,C. Zhong,J. Engelage,S.Esumi

Beam Energy Dependence of Jet-Quenching Effects in Au+Au Collisions at sNN =7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV

2018

Author(s): Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Ajitanand, NN; Alekseev, I; Anderson, DM; Aoyama, R; Aparin, A; Arkhipkin, D; Aschenauer, EC; Ashraf, MU; Attri, A; Averichev, GS; Bai, X; Bairathi, V; Barish, K; Behera, A; Bellwied, R; Bhasin, A; Bhati, AK; Bhattarai, P; Bielcik, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Bouchet, J; Brandenburg, JD; Brandin, AV; Brown, D; Bunzarov, I; Butterworth, J; Caines, H; De La Barca Sanchez, MC; Campbell, JM; Cebra, D; Chakaberia, I; Chaloupka, P; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chattopadhyay, S; Chen, JH; Chen, X; Chen, X; Cheng, J; Cherney, M; Christie, W; Contin, G; Crawford, HJ; Das, S; De Silva, LC; Debbe, RR; Dedovich, TG; Deng, J; Derevschikov, AA; Didenko, L; Dilks, C; Dong, X; Drachenberg, JL; Draper, JE; Dunkelberger, LE; Dunlop, JC; Efimov, LG; Elsey, N; Engelage, J; Eppley, G; Esha, R; Esumi, S; Evdokimov, O; Ewigleben, J; Eyser, O; Fatemi, R; Fazio, S; Federic, P; Federicova, P; Fedorisin, J; Feng, Z; Filip, P; Finch, E; Fisyak, Y; Flores, CE; Fujita, J | Abstract: © 2018 American Physical Society. We report measurements of the nuclear modification factor RCP for charged hadrons as well as identified π+(-), K+(-), and p(p) for Au+Au collision energies of sNN=7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV. We observe a clear high-pT net suppression in central collisions at 62.4 GeV for charged hadrons which evolves smoothly to a large net enhancement at lower energies. This trend is driven by the evolution of the pion spectra but is also very similar for the kaon spectra. While the magnitude of the proton RCP at high pT does depend on the collision energy, neither the proton nor the antiprotonRCP at high pT exhibit net suppression at any energy. A study of how the binary collision-scaled high-pT yield evolves with centrality reveals a nonmonotonic shape that is consistent with the idea that jet quenchingis increasing faster than the combined phenomena that lead to enhancement.

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