Centrality dependence of charged particle multiplicity in Au-Au collisions at square root of (s)NN = 130 GeV.

K Adcox,A Lebedev,L Paffrath,J L Nagle,R Averbeck,M Suzuki,E Melnikov,M J Bennett,Z Zhang,Y Goto,M Kann,L Kochenda,J T Mitchell,E Stenlund,Z Fraenkel,M Ishihara,A Ster,K N Barish,P W Stankus,M J Leitch,M L Brooks,B V Dinesh,S Sawada,T Sakuma,L Nikkinen,S Nagamiya,S P Stoll,R P Pisani,P Chung,W C Chang,T Ferdousi,J H Kang,N Starinsky,H J Kim,K Ebisu,M Muniruzzaman,T Ichihara,H Wang,A Kiyomichi,A L Godoi,J Newby,C P Singh,Y I Makdisi,E M Takagui,M Chiu,H Tsuruoka,T Matsumoto,V Kochetkov,Z Sun,S H Aronson,S F Pate,J Tojo,H Torii,F Messer,P Steinberg,Z Liu,T C Awes,A Bazilevsky,J Thomas,D Silvermyr,D Dutta,A Masaike,M J Tannenbaum,W A Zajc,F Mühlbacher,K Shigaki,A Franz,L Aphecetche,E J Desmond,T Chujo,B K Nandi,K Yagi,Y Nakada,T Christ,R Lacey,Y Tanaka,P L Mcgaughey,A Khanzadeev,N N Ajitanand,M Hibino,J Velkovska,D P Morrison,N Saito,I Ravinovich,W Y Jang,B Khachaturov,Y V Efremenko,H Buesching,M Pollack,S Nishimura,S Markacs,H W Van Hecke,A D Frawley,J Jia,I Shein,G Bunce,V Bumazhnov,Y Kwon,D S Ho,X Liu,V Riabov,L Ewell,J S Haggerty,R A Soltz,T E Miller,J Lauret,K F Read,J Nystrand,K S Sim,W Guryn,D M Lee,T K Shea,W Xie,F Matathias,J G Lajoie,A Milov,S K Mark,C Witzig,M X Liu,S Esumi,Y Nagasaka,Y Mao,A K Mohanty,S Butsyk,F K Wohn,C Velissaris,A G Hansen,S Yokkaichi,K S Joo,G R Young,B Bassalleck,R Seto,H Delagrange,Y Akiba,E Vznuzdaev,S Botelho,A Sakaguchi,B R Schlei,H Sako,M J Kweon,T A Carey,J P Sullivan,Y Arai,S C Johnson,T Ushiroda,J H Thomas,K Pope,R Santo,A Soldatov,Y G Kim,D J Kim,R Hayano,K Imai,J Chiba,S S Adler,H Hamagaki,R K Choudhury,S K Gupta,V Samsonov,D Koehler,J Barrette,T K Hemmick,P D Barnes,Y Riabov,A Glenn,Y Watanabe,E Taniguchi,P Chand,Y Sumi,G S Kyle,D E Fields,B Hong,Y H Shin,T L Thomas,W W Kinnison,I E Yushmanov,Z Li,K Homma,S T Belyaev,A Drees,D Kochetkov,S Kametani,T Sakaguchi,S Mioduszewski,Y Miake,R E Mischke,V Singh,M L Purschke,S K Tuli,I Otterlund,T Shiina,A Kozlov,S Bathe,G C Mishra,K El Chenawi,D J Lim,V Baublis,C A Ogilvie,M Rosati,J C Hill,T Kohama,V Papavassiliou,K Kurita,S S Kapoor,C Pinkenburg,C L Woody,G David,X H Li,B M Johnson,S Kelly,M Tamai,A Denisov,T Sugitate,T Peitzmann,X He,S Chernichenko,L Österman,S Zhou,S Klinksiek,A Durum,V Cianciolo,N Tyurin,P J Kroon,A Deshpande,J Murata,P Nilsson,A Hoover,D Bucher,E P Hartouni,M Sivertz,D S Brown,R S Towell,S S Ryu,J M Moss,E Kistenev,L L Chavez,M Velkovsky,V Semenov,N Bruner,M Sugioka,O Dietzsch,M Merschmeyer,A Taketani,K Reygers,M Ono,S Garpman,I D Ojha,M Grosse Perdekamp,M Messer,I Tserruya,H Tydesjö,J Alexander,K Oyama,S Y Kim,Y Berdnikov,Tarun Kanti Ghosh ,V Pantuev ,S White ,М А Volkov ,Jun Kikuchi ,James Chang ,D D’enterria ,C Y ,V Onuchìn ,H En’yo ,A Rose ,Hiroshi Hara ,J R Mahon ,С Беликов ,E O’brien ,M Marx ,S Y Fung ,F Plášil ,Y Schütz ,T A Shibata ,B Cole ,S Greene ,A Nyanin ,B Jacak ,Christian Klein-Boesing ,H Sato ,S Fokin ,F Bellaiche ,S P Sørensen ,Kazuhiro Tanaka ,G Martı́nez ,Athanasios Petridis ,P V Pitukhin ,I Sibiriak ,A P.t Palounek ,V Manko ,C Maguire ,J M Burward-Hoy ,M Ippolitov ,A Öskarsson ,А Виноградов ,W D Tian ,Naoki Hayashi ,A Tsvetkov ,H Å Gustafsson ,A A Vorobyov ,J M Heuser ,T.c Sangster ,J Simon‐Gillo ,H Ohnìshì ,M Chung ,Susumu Sato

doi:10.1103/physrevlett.86.3500

Abstract

We present results for the charged-particle multiplicity distribution at midrapidity in Au-Au collisions at square root of [s(NN)] = 130 GeV measured with the PHENIX detector at RHIC. For the 5% most central collisions we find dN(ch)/d eta(vertical line eta = 0) = 622+/-1(stat)+/-41(syst). The results, analyzed as a function of centrality, show a steady rise of the particle density per participating nucleon with centrality.

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