Beam energy dependence of (anti-)deuteron production in Au + Au collisions at the BNL Relativistic Heavy Ion Collider

J Adam,M Shao,B S Page,E Shahaliev,I Bunzarov,B Tu,K Krueger,R Licenik,S S Shi,P Tribedy,S Jowzaee,F Seck,D B Nemes,A Kisiel,B Srivastava,M Nie,S Luo,N G Minaev,G Odyniec,G Xie,M Zyzak,L Yi,B Mohanty,Y Fisyak,X Zhu,W Xie,S Kabana,K Yip,S Heppelmann,J C Dunlop,L Ma,J W Harris,B Surrow,J C Webb,X Ju,S Singha,A Taranenko,N K Pruthi,M Simko,M Csanád,G Van Buren,S Salur,W J Llope,R Sikora,L V Nogach,Y Wu,S Siejka,J D Brandenburg,J Seger,S K Radhakrishnan,J L Drachenberg,A Gupta,H W Ke,S Ramachandran,O Evdokimov,R Ma,Y Liang,D Grosnick,J M Landgraf,L Didenko,T Lin,A R Timmins,G Agakishiev,C A Tomkiel,E P Sichtermann,C Perkins,Q H Xu,O V Rogachevskiy,B R Schweid,S Oh,R Majka,C Zhou,K Jiang,Y V Khyzhniak,S Trentalange,H J Crawford,J Engelage,D P Kikoła,T Niida,O D Tsai,K Oh,I Vassiliev,H Caines,A H Tang,Z Ahammed,O Eyser,S Yang,B Summa,L Ruan,K Kang,Y Feng,L Kumar,J L Romero,J Lauret,J Schambach,S K Tripathy,P Chaloupka,N Xu,J Ewigleben,N Shah,H Wieman,W Guryn,D Mallick,G S Averichev,X Luo,A V Brandin,J Porter,A N Vasiliev,L He,N Elsey,Y Sun,R L Pintér,I G Bordyuzhin,L C Bland,M Sergeeva,C Markert,A A Derevschikov,J Bryslawskyj,J Zhao,A Jentsch,I M Deppner,F Videbæk,A Lipiec,Y Panebratsev,J H Kwasizur,M Strikhanov,Z Tang,M A Lisa,K Meehan,R Fatemi,D G Underwood,O Matonoha,T J Humanic,H Zbroszczyk,R Esha,B K Chan,M M Aggarwal,Q Yang,S Mioduszewski,M Posik,Md Nasim,A Lebedev,R S Longacre,A Ogawa,N Kulathunga Mudiyanselage,M Cherney,D N Svirida,P Federic,V Bairathi,H S Matis,L Kochenda,J Pluta,L K Kosarzewski,G Eppley,I Alekseev,S Chattopadhyay,G D Westfall,H Xu,N Schmitz,N Smirnov,A Attri,T Ullrich,H Pei,P Huo,J R Adams,D Cebra,A Chatterjee,P Seyboth,T Galatyuk,W W Jacobs,S Horvat,D M Anderson,Z Xu,H M Spinka,T Edmonds,S Esumi,T Huang,D Mishra,N Chankova-Bunzarova,A K Bhati,T G Dedovich,D Keane,R E Tribble,M Kelsey,M Kocan,M Tokarev,E G Judd,D Kalinkin,T A Kinghorn,X Dong,I Kisel,S Kagamaster,R Seto,G Igo,S Margetis,R Lacey,A I Hamad,A Kechechyan,D Tlusty,T Nonaka,N Herrmann,I Chakaberia,A Behera,T Sugiura,K Nayak,R Aoyama,R Reed,A Hamed,D Arkhipkin,I Mooney,I Upsal,E Finch,W Solyst,J Sandweiss,J Putschke,C A Gagliardi,R Bellwied,H Z Huang,P Sorensen,A Bhasin,Z Chang,K Kauder,H G Ritter,M Calderón De La Barca Sánchez,J Jia,D Kapukchyan,S A Voloshin,P Filip,B Stringfellow,M Stefaniak,S W Wissink,J Cheng,L Holub,R Pak,T Tarnowsky,J H Thomas,R Witt,Д А Морозов ,Z Moravcová ,Y Xu ,Yuanjing Li ,J Mazer ,M Żurek ,Y J Sun ,П Кравцов ,Yi Wang ,Liwen Wen ,Xiaolong Chen ,J Bielčíková ,F G Atetalla ,P Szymański ,Jinhui Chen ,Xiao Zhang ,Q Shou ,Yifei Zhang ,David J Stewart ,Zhen Liu ,Alexandre Alarcon Do Passo Suaide ,J Roberts ,J Vaněk ,I K Yoo ,Bill Christie ,Raghav Kunnawalkam Elayavalli ,Xin Li ,Guoliang Ma ,T Ljubičić ,Zhong Chen ,L Kramárik ,J Rusňák ,R Lednický ,Liang Zhang ,Shenghui Zhang ,Gang Wang ,S Stanislaus ,L Ray ,Zhengqiao Zhang ,Yifan Hong ,Fuqiang Wang ,J Fedorišin ,Ł Fulek ,Z H Zhu ,Jeonghun Lee ,Peifeng Liu ,Peng Liu ,Wei Li ,Xiaoyu Liu ,Chong Kim ,M Šumbera ,Xiaoping Zhang ,K N Barish ,Niseem Magdy Abdelwahab Abdelrahman ,Yugang Ma ,V Okorokov ,Jagbir Singh ,J Bielčík ,Dingwei Zhang ,Cheng Li ,Yi Yang ,Pengfei Wang ,Yanfang Liu ,X Sun ,D Pawłowska ,Yuanjing Ji ,M Przybycień ,S Huang ,Song Zhang ,Muhammad Usman Ashraf ,F J M Geurts ,Tong Liu ,Zaochen Ye ,Yaping Wang ,N Sahoo ,Huanzhao Liu ,Feng Liu ,S Vokál

doi:10.1103/physrevc.99.064905

Abstract

We report the energy dependence of mid-rapidity (anti-)deuteron production in Au+Au collisions at $\sqrt{s_\text{NN}} =\ $7.7, 11.5, 14.5, 19.6, 27, 39, 62.4, and 200 GeV, measured by the STAR experiment at RHIC. The yield of deuterons is found to be well described by the thermal model. The collision energy, centrality, and transverse momentum dependence of the coalescence parameter $B_2$ are discussed. We find that the values of $B_2$ for anti-deuterons are systematically lower than those for deuterons, indicating that the correlation volume of anti-baryons is larger than that of baryons at $\sqrt{s_\text{NN}}$ from 19.6 to 39 GeV. In addition, values of $B_2$ are found to vary with collision energy and show a broad minimum around $\sqrt{s_\text{NN}}=\ $20 to 40 GeV, which might imply a change of the equation of state of the medium in these collisions.

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