Three-pion Hanbury Brown-Twiss correlations in relativistic heavy-ion collisions from the STAR experiment.

J R Adams ,T Kollegger,S Salur,S Trentalange,G Rakness,V I Yurevich,C Adler,R P Scharenberg,T J Humanic,L Didenko,P Jacobs,M Germain,J Engelage,J Porter,P Chaloupka,J Baudot,S M Guertin,M Anderson,G D Westfall,H Bichsel,I Sakrejda,B E Bonner,S A Voloshin,T Ullrich,B D Anderson,A Meschanin,T D Gutierrez,C Kuhn,R Lednický,D Flierl,A Cardenas,C Pruneau,C P Lansdell,M Oldenburg,J Kiryluk,L S Schroeder,B Lasiuk,V B Dunin,A Billmeier,M Guedon,D G Underwood,J Gans,A Stolpovsky,C L Kunz,C Markert,P G Jones,T Pawlak,J Amonett,R Zoulkarneev,H Caines,J E Draper,T J M Symons,N Gagunashvili,S Bekele,T Herston,J H Thomas,Q J Liu,V M Leontiev,E Shahaliev,C A Gagliardi,A Hirsch,S Margetis,R Majka,M Horsley,C Whitten,D Reichhold,N Xu,S Timoshenko,T S Mcshane,S B Nurushev,Y Panebratsev,O V Rogachevski,D Prindle,O Barannikova,Q Li,J L Romero,G Odyniec,H S Matis,V Okorokov,W A Love,Z Xu,J Castillo,I Zborovský,P Sorensen,A D Kovalenko,M Šumbera,A M Poskanzer,D Thein,E Gushin,M Castro,C Struck,A Ridiger,S E Vigdor,R S Longacre,Y Chen,V Morozov,E G Judd,H M Spinka,G W Hoffmann,J Fu,M Kopytine,O Ravel,K E Shestermanov,V Ghazikhanian,S R Klein,D Arkhipkin,R Willson,F Liu,J Berger,G S Averichev,E Yamamoto,T W Henry,B Norman,C Roy,L C Bland,N Porile,J Faivre,Y Wang,R Bellwied,M Thompson,P Yepes,A Kisiel,M Kaneta,D Keane,V Perevoztchikov,E Hjort,K Krueger,Y V Zanevski,P Fachini,I Savin,J Putschke,H J Crawford,B Srivastava,M B Tonjes,J Schambach,A A Derevschikov,P Nevski,H Ward,M Cherney,W Christie,H Zhang,M A Lisa,G Renault,A Ogawa,M Lopez-Noriega,S J Lindenbaum,T Ludlam,A Boucham,J C Dunlop,A I Pavlinov,S Chattopadhyay,M Botje,W M Zhang,J M Nelson,V Faine,D Magestro,J Seger,V Trofimov,P Szarwas,S Kabana,T A Trainor,S Lange,A Rose,M Strikhanov,F Laue,J Pluta,J Carroll,E Finch,J P Coffin,R Stock,J M Landgraf,S W Wissink,R Picha,T J Hallman,H Long,E J Stephenson,C Allgower,K J Foley,A Chikanian,H Z Huang,R V Cadman,J G Cramer,B Erazmus,L V Nogach,L Gaudichet,J Takahashi,X Z Cai,C F Moore,L S Barnby,M Messer,G J Kunde,M Kaplan,K Schweda,M Calderón De La Barca Sánchez,Z Ahammed,S Heppelmann,M G Munhoz,J Zoulkarneeva,A E Yakutin,F Wang,D Lynn,V V Belaga,D Cebra,B Stringfellow,P Seyboth,O Grachov,J Lauret,T Dietel,A H Tang,W Peryt,C O Blyth,W W Jacobs,J Wood,B Hippolyte,V Eckardt,M J Levine,G Van Buren,D Hardtke,D Olson,N Schmitz,A Szanto De Toledo,R Wells,J Sandweiss,J Balewski,G Igo,K Filimonov,A Lebedev,E Sugarbaker,G Eppley,L Liu,H Wieman,J G Reid,C Suire,M Heinz,I Johnson,L Kotchenda,T M Cormier,R E Tribble,H G Ritter,B Surrow,F Simon,M Tokarev,Z Liu,M M De Moura,A Ishihara,R L Ray,A Tai,A N Zubarev,G Rai,N Smirnov,A Klyachko,E Potrebenikova,Yu A Matulenko,N G Minaev,Y Fisyak,A M Vander Molen,A Bravar,L G Efimov,R Witt,R Fatemi,J W Harris,J W Watson,W J Llope,Z Milosevich,S V Razin,S S Shimanskii,J Sowiński ,Jing Yang ,В А Никитин ,V Petrov ,А А Кузнецов ,A Vasiliev ,А И Куликов ,G Škoro ,F Retière ,L Molnár ,M Planinić ,L M Garcia Martin ,O D Tsai ,J Roberts ,M Krämer ,Alexandre Alarcon Do Passo Suaide ,Raimond Snellings ,T Ljubičić ,М Взнуздаев ,F J M Geurts ,Y G ,M A.c Lamont ,В Емелянов ,Jin Ma ,F Meißner ,J N Marx ,G Paić ,A V Brandin ,П Кравцов ,Bong‐Hyuk Choi ,S Chernenko ,Michael L Miller ,S Pandey ,J T Mitchell ,J L Klay ,S Panitkin ,M M Corral ,А С Константинов ,R.kh Kutuev ,M A Janik ,V L Rykov ,Yu Melnick

doi:10.1103/physrevlett.91.262301

Abstract

Data from the first physics run at the Relativistic Heavy-Ion Collider at Brookhaven National Laboratory, Au+Au collisions at sqrt[s(NN)]=130 GeV, have been analyzed by the STAR Collaboration using three-pion correlations with charged pions to study whether pions are emitted independently at freeze-out. We have made a high-statistics measurement of the three-pion correlation function and calculated the normalized three-particle correlator to obtain a quantitative measurement of the degree of chaoticity of the pion source. It is found that the degree of chaoticity seems to increase with increasing particle multiplicity.

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