Centrality and Transverse Momentum Dependence of Elliptic Flow of Multistrange Hadrons and ϕ Meson in Au+Au Collisions at √[sNN]=200 GeV.

L Adamczyk,J K Adkins,G Agakishiev,M M Aggarwal,Z Ahammed,I Alekseev,A Aparin,D Arkhipkin,E C Aschenauer,G S Averichev,V Bairathi,A Banerjee,R Bellwied,A Bhasin,A K Bhati,P Bhattarai,J Bielcik,J Bielcikova,L C Bland,I G Bordyuzhin,J Bouchet,A V Brandin,I Bunzarov,J Butterworth,H Caines,M Calderón de la Barca Sánchez,J M Campbell,D Cebra,M C Cervantes,I Chakaberia,P Chaloupka,Z Chang,S Chattopadhyay,J H Chen,X Chen,J Cheng,M Cherney,W Christie,G Contin,H J Crawford,S Das,L C De Silva,R R Debbe,T G Dedovich,J Deng,A A Derevschikov,B di Ruzza,L Didenko,C Dilks,X Dong,J L Drachenberg,J E Draper,C M Du,L E Dunkelberger,J C Dunlop,L G Efimov,J Engelage,G Eppley,R Esha,O Evdokimov,O Eyser,R Fatemi,S Fazio,P Federic,J Fedorisin,Z Feng,P Filip,Y Fisyak,C E Flores,L Fulek,C A Gagliardi,D Garand,F Geurts,A Gibson,M Girard,L Greiner,D Grosnick,D S Gunarathne,Y Guo,S Gupta,A Gupta,W Guryn,A Hamad,A Hamed,R Haque,J W Harris,L He,S Heppelmann,S Heppelmann,A Hirsch,G W Hoffmann,D J Hofman,S Horvat,X Huang,B Huang,H Z Huang,P Huck,T J Humanic,G Igo,W W Jacobs,H Jang,K Jiang,E G Judd,S Kabana,D Kalinkin,K Kang,K Kauder,H W Ke,D Keane,A Kechechyan,Z H Khan,D P Kikoła,I Kisel,A Kisiel,L Kochenda,D D Koetke,T Kollegger,L K Kosarzewski,A F Kraishan,P Kravtsov,K Krueger,I Kulakov,L Kumar,R A Kycia,M A C Lamont,J M Landgraf,K D Landry,J Lauret,A Lebedev,R Lednicky,J H Lee,Z M Li,W Li,X Li,X Li,C Li,Y Li,M A Lisa,F Liu,T Ljubicic,W J Llope,M Lomnitz,R S Longacre,X Luo,Y G Ma,G L Ma,L Ma,R Ma,N Magdy,R Majka,A Manion,S Margetis,C Markert,H Masui,H S Matis,D McDonald,K Meehan,N G Minaev,S Mioduszewski,D Mishra,B Mohanty,M M Mondal,D A Morozov,M K Mustafa,B K Nandi,Md Nasim,T K Nayak,G Nigmatkulov,L V Nogach,S Y Noh,J Novak,S B Nurushev,G Odyniec,A Ogawa,K Oh,V Okorokov,D Olvitt,B S Page,R Pak,Y X Pan,Y Pandit,Y Panebratsev,B Pawlik,H Pei,C Perkins,A Peterson,P Pile,M Planinic,J Pluta,N Poljak,K Poniatowska,J Porter,M Posik,A M Poskanzer,J Putschke,H Qiu,A Quintero,S Ramachandran,R Raniwala,S Raniwala,R L Ray,H G Ritter,J B Roberts,O V Rogachevskiy,J L Romero,A Roy,L Ruan,J Rusnak,O Rusnakova,N R Sahoo,P K Sahu,I Sakrejda,S Salur,J Sandweiss,A Sarkar,J Schambach,R P Scharenberg,A M Schmah,W B Schmidke,N Schmitz,J Seger,P Seyboth,N Shah,E Shahaliev,P V Shanmuganathan,M Shao,B Sharma,M K Sharma,W Q Shen,S S Shi,Q Y Shou,E P Sichtermann,R Sikora,M Simko,S Singha,M J Skoby,D Smirnov,N Smirnov,L Song,P Sorensen,H M Spinka,B Srivastava,T D S Stanislaus,M Stepanov,R Stock,M Strikhanov,B Stringfellow,M Sumbera,B Summa,X Sun,X M Sun,Y Sun,Z Sun,B Surrow,N Svirida,M A Szelezniak,A H Tang,Z Tang,T Tarnowsky,A Tawfik,J H Thomas,A R Timmins,D Tlusty,M Tokarev,S Trentalange,R E Tribble,P Tribedy,S K Tripathy,B A Trzeciak,O D Tsai,T Ullrich,D G Underwood,I Upsal,G Van Buren,G van Nieuwenhuizen,M Vandenbroucke,R Varma,A N Vasiliev,R Vertesi,F Videbæk,Y P Viyogi,S Vokal,S A Voloshin,A Vossen,Y Wang,G Wang,J S Wang,H Wang,Y Wang,F Wang,J C Webb,G Webb,L Wen,G D Westfall,H Wieman,S W Wissink,R Witt,Y F Wu,Y Wu,Z G Xiao,W Xie,K Xin,N Xu,Z Xu,Q H Xu,Y F Xu,H Xu,Q Yang,Y Yang,Y Yang,S Yang,C Yang,Z Ye,P Yepes,L Yi,K Yip,I-K Yoo,N Yu,H Zbroszczyk,W Zha,Z Zhang,Y Zhang,J B Zhang,J Zhang,S Zhang,J Zhang,X P Zhang,J Zhao,C Zhong,L Zhou,X Zhu,Y Zoulkarneeva,M Zyzak,

PHYSICAL REVIEW LETTERS（2016）

Cited 75|Views29

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Abstract

We present high precision measurements of elliptic flow near midrapidity (|y|<1.0) for multistrange hadrons and ϕ meson as a function of centrality and transverse momentum in Au+Au collisions at center of mass energy √[sNN]=200 GeV. We observe that the transverse momentum dependence of ϕ and Ω v2 is similar to that of π and p, respectively, which may indicate that the heavier strange quark flows as strongly as the lighter up and down quarks. This observation constitutes a clear piece of evidence for the development of partonic collectivity in heavy-ion collisions at the top RHIC energy. Number of constituent quark scaling is found to hold within statistical uncertainty for both 0%-30% and 30%-80% collision centrality. There is an indication of the breakdown of previously observed mass ordering between ϕ and proton v2 at low transverse momentum in the 0%-30% centrality range, possibly indicating late hadronic interactions affecting the proton v2.

Translated text

Key words

Elliptic flow,Meson,Strange quark,Constituent quark,Vector meson,Quark,Quark–gluon plasma,Hadron,Nuclear physics,Particle physics,Physics

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