Bulk properties of the system formed in Au+Au collisions at sNN=14.5 GeV at the BNL STAR detector

J Adam,T G Dedovich,A Chatterjee,Y H Leung,T Lin,S W Wissink,B K Chan,O Eyser,F Seck,J M Nelson,L K Kosarzewski,I Kisel,C Zhou,D Zhang,B Srivastava,S Choudhury,S K Radhakrishnan,R Majka,S Zhang,K Kang,Z Yang,H Qiu,C Yang,N Shah,S Heppelmann,S Salur,O D Tsai,Md Nasim,L Kochenda,A Jentsch,W J Llope,M M Aggarwal,A Kisiel,X M Sun,H J Crawford,Y Liang,M Kocan,N Herrmann,J L Romero,J Pluta,G D Westfall,Z Ye,J D Nam,D Kapukchyan,S Luo,R L Ray,A Pandav,S K Tripathy,H S Matis,G Nigmatkulov,M Chevalier,S Fazio,M Cherney,Z Zhang,G Wang,P Filip,J Putschke,W Q Shen,Y Lin,B S Page,S Mioduszewski,J Porter,L Pinsky,M Stefaniak,E C Aschenauer,A Behera,D Neff,T Niida,I Vassiliev,W He,L Adamczyk,G Van Buren,J M Landgraf,P Seyboth,R Licenik,Z Ahammed,I G Bordyuzhin,A Kiselev,E Shahaliev,T Ullrich,H Liu,J Jia,M Csanád,S Ramachandran,S Horvat,J R Adams,Z Xu,D Mishra,X P Zhang,X Huang,P V Shanmuganathan,M Daugherity,S Kabana,S S Shi,Q Yang,L Kumar,H Z Huang,G Odyniec,W Li,H Wieman,X Li,L Didenko,T J Humanic,Q H Xu,N G Minaev,K Gopal,S Yang,M Zyzak,A Lebedev,Z J Zhang,X Liu,N Magdy,B R Schweid,E Finch,R Witt,S Margetis,H G Ritter,M Sergeeva,Y Ji,E P Sichtermann,P Liu,C A Gagliardi,K Nayak,D Kalinkin,T Nonaka,Y Panebratsev,N Kulathunga Mudiyanselage,W Zha,W B Schmidke,L Ma,J Sandweiss,Y Fisyak,Y Feng,J H Kwasizur,M Calderón De La Barca Sánchez,X Chen,J W Harris,M Nie,D Isenhower,A Kechechyan,Y Liu,Y Li,G Agakishiev,I Alekseev,J Zhao,A Attri,J L Drachenberg,B Surrow,D Kincses,K Kauder,G Igo,Z Tang,Z Tu,C Jena,R Pak,R Bellwied,Y V Khyzhniak,M A Lisa,A Francisco,N K Pruthi,B Summa,L Yi,M Posik,D Chen,R E Tribble,Z Chang,L Wen,P Sorensen,J C Dunlop,H Pei,R Fatemi,W Guryn,D J Stewart,L V Nogach,G S Averichev,E G Judd,R L Pintér,W W Jacobs,C Li,L C Bland,X He,Y Wu,A Taranenko,D G Underwood,D Grosnick,M L Kabir,F Wang,A Bhasin,P Huo,N Chankova-Bunzarova,V Bairathi,D P Kikoła,J Lauret,R Seto,T Liu,I Chakaberia,X Luo,F Liu,O Evdokimov,B Stringfellow,A A Derevschikov,Z Liu,A Hamed,F-H Chang,Z Chen,P Wang,N Smirnov,S Oh,J C Webb,N S Lukow,S A Voloshin,Y Sun,X Zhu,M Strikhanov,J Engelage,J S Wang,Z Wang,F G Atetalla,D Tlusty,L Ruan,K Krueger,G Eppley,H Caines,P C Weidenkaff,S Singha,N Elsey,G Xie,H Sako,J K Adkins,A H Tang,S Esumi,S Lan,J H Thomas,Y Wang,D N Svirida,C A Tomkiel,M Shao,T Tarnowsky,R Sikora,M Kelsey,I Upsal,A Ogawa,W Solyst,S Jowzaee,P Federic,J H Lee,R Reed,J H Chen,X Dong,H Zbroszczyk,N Xu,B Mohanty,A Aparin,P Chaloupka,J D Brandenburg,B Kimelman,F Shen,A V Brandin,H M Spinka,X Ju,R S Longacre,R Esha,M Tokarev,K Yip,S Kagamaster,J Seger,D B Nemes,T Edmonds,T Galatyuk,D Cebra,R Ma,C Kim,J Cheng,R Lacey,A Quintero,O V Rogachevskiy,S Trentalange,J Ewigleben,C Markert,P Tribedy,D M Anderson,L Holub,I M Deppner,Y Zhang,A R Timmins,D Keane,Y Xu,T A Kinghorn,N Schmitz,I Mooney,F Videbæk,K Jiang,A I Hamad,W Christie,A Gibson,B Pawlik,C Perkins,M Simko,H W Ke,T D S Stanislaus,W Xie,H S Xu ,M Przybycień ,K N Barish ,A Vasiliev ,Susumu Sato ,J Fedorišin ,J Rusňák ,L Kramárik ,Y G ,Zhong Chen ,П Кравцов ,Muhammad Usman Ashraf ,S Vokál ,J Bielčíková ,Yifan Hong ,Z Moravcová ,Д А Морозов ,Eric A Hoffman ,Z H Zhu ,T Ljubičić ,Xiao Zhang ,J M Butterworth ,C Feng ,M Żurek ,M I Nagy ,J Mazer ,Dukhishyam Mallick ,Ł Fulek ,J Bielčík ,J B Singh ,J Vaněk ,G L ,P Szymański ,S Huang ,Vitaly Okorokov ,Song He ,D Pawłowska ,Tao Huang ,F J M Geurts ,Q Shou ,N Sahoo ,R Lednický ,Yang Yu ,M Šumbera ,Alexandre Alarcon Do Passo Suaide ,Yifan Hu ,J Roberts ,Raghav Kunnawalkam Elayavalli

doi:10.1103/physrevc.101.024905

Abstract

We report systematic measurements of bulk properties of the system created in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}$ = 14.5 GeV recorded by the STAR detector at the Relativistic Heavy Ion Collider (RHIC).The transverse momentum spectra of $\pi^{\pm}$, $K^{\pm}$ and $p(\bar{p})$ are studied at mid-rapidity ($|y| < 0.1$) for nine centrality intervals. The centrality, transverse momentum ($p_T$),and pseudorapidity ($\eta$) dependence of inclusive charged particle elliptic flow ($v_2$), and rapidity-odd charged particles directed flow ($v_{1}$) results near mid-rapidity are also presented. These measurements are compared with the published results from Au+Au collisions at other energies, and from Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV. The results at $\sqrt{s_{\mathrm{NN}}}$ = 14.5 GeV show similar behavior as established at other energies and fit well in the energy dependence trend. These results are important as the 14.5 GeV energy fills the gap in $\mu_B$, which is of the order of 100 MeV,between $\sqrt{s_{\mathrm{NN}}}$ =11.5 and 19.6 GeV. Comparisons of the data with UrQMD and AMPT models show poor agreement in general.

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