Freeze-out dynamics via charged kaon femtoscopy insNN=200GeV central Au + Au collisions

L Adamczyk,Md Nasim,T J M Symons,K Xin,Z Ahammed,J Schambach,R A Kycia,Y Pandit,J Sandweiss,J Zhao,D Garand,A K Bhati,D P Mahapatra,J K Adkins,Y P Viyogi,I Koralt,D Tlusty,A Banerjee,W Christie,P Huck,S Heppelmann,Y Li,D Solanki,D Smirnov,S Kabana,A Sandacz,B Huang,K Yip,Y Fisyak,R G Fersch,E Finch,F Liu,C M Du,S G Brovko,J Takahashi,J Y Chen,P Tribedy,A Ogawa,C Pruneau,B Di Ruzza,H Bichsel,B Pawlik,H J Crawford,L Didenko,G D Westfall,B Stringfellow,Y Wang,T K Nayak,E W Oldag,H W Ke,J Bouchet,M M Aggarwal,J S Wang,G Wang,S Chattopadhyay,S Gliske,A Kisiel,Bhattarai Bhattarai,Z P Zhang,M C Suarez,M K Mustafa,T Kollegger,H M Spinka,S Trentalange,R L Ray,P Chaloupka,C A Gagliardi,J C Dunlop,M C Cervantes,L C Bland,E Shahaliev,T P Burton,N Schmitz,D Cebra,A V Brandin,W Peryt,J Konzer,A Chikanian,M Pachr,L Kumar,T J Humanic,J M Landgraf,G Van Buren,B Mohanty,H Zbroszczyk,H Pei,A Kesich,S Zhang,G Eppley,X Cui,B S Page,M Strikhanov,J Lauret,L H Tarini,H Xu,R Varma,J Turnau,M A Lisa,H G Ritter,H Wang,R Cendejas,D N Svirida,A M Poskanzer,M M Mondal,L Ruan,P Yepes,M Elnimr,Y Zhang,W Guryn,S Ramachandran,J A Vanfossen,H Masui,M J Skoby,L Eun,H Z Huang,W Borowski,E Bruna,S K Pal,N Xu,W W Jacobs,J M Nelson,T Pawlak,S Fazio,D G Underwood,J Seger,H F Chen,H Caines,S Horvat,O Hajkova,R Stock,J Pluta,K Krueger,J Alford,G Agakishiev,E G Judd,M Tokarev,T Ullrich,Dilks Dilks,R Fatemi,B A Trzeciak,A Gibson,G Webb,P R Pujahari,K D Landry,O V Rogachevskiy,B Haag,R Corliss,M Naglis,S Lapointe,P Sorensen,M Calderón De La Barca Sánchez,Z M Li,T S Mcshane,P Pile,S W Wissink,G S Averichev,W J Llope,I Kisel,O D Tsai,W Xu,R P Scharenberg,N Poljak,P Djawotho,T Tarnowsky,C K Riley,M Cherney,R Haque,G Igo,Z Barnovska,X P Zhang,A Kechechyan,B Surrow,J G Cramer,P Chung,D M M D Madagodagettige Don,J Balewski,R Raniwala,D R Gangadharan,X Zhu,L M Lima,F Ding,K S Engle,J Deng,D Arkhipkin,I G Bordyuzhin,X Li,L E Dunkelberger,N K Pruthi,O G Grebenyuk,E P Sichtermann,I Sakrejda,J L Romero,J Cheng,C Perkins,Z Chang,B Schmidke,M Walker,A Aparin,R Derradi De Souza,W Zha,S Mioduszewski,A H Tang,L V Nogach,J L Drachenberg,A Gupta,M J M Codrington,A Szanto De Toledo,Y Mohammed,P Filip,I Bunzarov,T D S Stanislaus,W Korsch,X Dong,N Shah,V Okorokov,J E Draper,Y Panebratsev,R Witt,H Wieman,A Lebedev,A Vossen,M Zyzak,R E Tribble,D Keane,L C De Silva,E Sangaline,Y Zawisza,L G Efimov,O Evdokimov,U G Desouza,X L Wang,L Kotchenda,G Odyniec,Y Zoulkarneeva,A Davila Leyva,R S Longacre,S Margetis,F Videbæk,M Shao,C Li,J Engelage,A Dion,M J Levine,I Kulakov,H S Matis,Y Guo,T G Dedovich,S S Shi,S Dhamija,P Seyboth,C B Powell,J Porter,D D Koetke,A Hamed,J W Harris,G Van Nieuwenhuizen,K Kauder,S Bültmann,D Grosnick,Z Xu,J H Chen,T Ljubičić ,W Xie,M Przybycień ,R Majka,R Singaraju ,R Debbe ,Feng Zhao ,J Bielčík ,Z Sun,I Alekseev,D Beavis ,B K Nandi,L Chen,R Bellwied,S Salur,B Sharma,П Кравцов ,Y Yang,S Vokál ,J Roberts ,C Yang,R Lednický ,J Putschke,Meenakshi Sharma ,D Mcdonald,N Smirnov,Q H Xu,S Gupta,A Roy,W A Leight ,X M Sun,M Mitrovski ,Y Xu,P K Sahu,H Qiu,D J Hofman,X Luo,Victoria C Yan ,N Sahoo ,I K Yoo ,M G Munhoz,J M Butterworth ,J R Stevens,Y Zhu ,Zhong Chen ,R Vértesi ,C Markert,Alexandre Alarcon Do Passo Suaide ,A Ohlson,C Flores ,B Srivastava,Q Shou ,M Betancourt ,D Plyku,M A.c Lamont ,E C Aschenauer ,A Sarkar,C Anson ,D P Kikoła ,W Li,J Rusňák ,L Yi,J Fedorišin ,M Šumbera ,G M.s Vasconcelos ,F J M Geurts ,G L ,S A Voloshin,M Planinić ,Y J Sun ,J H Thomas,F Wang,J F Ross,D Olson,C Jena,Y X Pan,S Raniwala,Y F Wu,A Hirsch,R A Negrao De Oliveira ,L Han ,J C Webb,Z Tang,Xiao Zhang ,R R Betts,S Das,T Schuster ,Y G ,J H Lee,W Q Shen,Q Wang,J Bielčíková ,J P Hays-Wehle,K Oh,A Bhasin,J J Chwastowski ,M Wada,J Novák ,G W Hoffmann,A Schmah ,K Kang,A R Timmins,J Kiryluk,J B Zhang

doi:10.1103/physrevc.88.034906

Abstract

We present measurements of three-dimensional correlation functions of like-sign low transverse momentum kaon pairs from sqrt(sNN)=200 GeV Au+Au collisions. A Cartesian surface-spherical harmonic decomposition technique was used to extract the kaon source function. The latter was found to have a three-dimensional Gaussian shape and can be adequately reproduced by Therminator event generator simulations with resonance contributions taken into account. Compared to the pion one, the kaon source function is generally narrower and does not have the long tail along the pair transverse momentum direction. The kaon Gaussian radii display a monotonic decrease with increasing transverse mass m_T over the interval of 0.55<=m_T<=1.15 GeV/c^2. While the kaon radii are adequately described by the m_T-scaling in the outward and sideward directions, in the longitudinal direction the lowest m_T value exceeds the expectations from a pure hydrodynamical model prediction.

Full Text