Deuteron and Antideuteron Production inAu+AuCollisions atsNN=200  GeV

S S Adler,H Masui,W Y Jang,A Isupov,J Rak,Y I Makdisi,R Amirikas,J Milan,S Yokkaichi,A Kiyomichi,R Santo,T Sakaguchi,Y Kwon,M Reuter,S Sawada,A Lebedev,R Du Rietz,A Parmar,J M Heuser,L Aphecetche,H Hamagaki,B Khachaturov,L Sanfratello,S Kametani,S S Kapoor,G R Young,J M Moss,C A Ogilvie,A Baldisseri,Y Tanaka,J C Hill,I D Ojha,Y Watanabe,P J Kroon,K Katou,A Devismes,T Hachiya,M Ishihara,I Ravinovich,M Sivertz,E M Takagui,K Kurita,M Tamai,A Hoover,Y Akiba,A Deshpande,T K Shea,A K Purwar,M Grosse Perdekamp,D Jouan,E Stenlund,S C Johnson,D Bucher,K N Barish,M J Kweon,T Kohama,S Batsouli,V Peresedov,R A Soltz,E Kistenev,B K Nandi,S H Aronson,Y Goto,J E Frantz,O Dietzsch,P Chand,S Bathe,M L Purschke,J Chiba,A Soldatov,J Murata,E P Hartouni,W E Sondheim,F K Wohn,A Romana,V Veszprémi,R Azmoun,J Newby,A Durum,W A Zajc,O Drapier,K S Joo,J Alexander,M Chiu,Y Miake,T Shiina,N Saito,M J Leitch,M Heffner,A S Nyanin,Z Fraenkel,S Bhagavatula,D Silvermyr,J G Boissevain,H Torii,G Bunce,M E Sadler,H Delagrange,J D Tepe,B Hong,K F Read,N Kamihara,M Rosati,Y Mao,A Enokizono,A Bazilevsky,S K Tuli,N Tyurin,P Tarján,M Stepanov,B Bassalleck,W Xie,R P Pisani,D S Brown,T E Miller,K Oyama,T Ichihara,G Roche,S Zhou,Y Kuroki,P W Stankus,J Velkovska,S Chernichenko,J Choi,J S Haggerty,S Afanasiev,L Zolin,P Rosnet,H Tsuruoka,S Mioduszewski,V Babintsev,K Reygers,Y Riabov,T Chujo,A Kozlov,L Kochenda,D E Fields,W C Chang,E Vznuzdaev,Y Berdnikov,V Papavassiliou,G Gogiberidze,T C Awes,R S Towell,K Kiyoyama,J Jia,K El Chenawi,K Ozawa,P D Barnes,K Imai,G S Kyle,A Khanzadeev,V Cianciolo,M Sakai,R Averbeck,A Franz,F Staley,A Litvinenko,A Yanovich,P Nilsson,T K Hemmick,H Borel,H En’Yo,S Kelly,C H Kuberg,J H Kang,E J Desmond,D Dutta,M Issah,T Matsumoto,A Milov,N Grau,I V Sourikova,D Koehler,R K Choudhury,D Isenhower,J Nystrand,Y V Efremenko,G David,M J Tannenbaum,K Tanida,K S Sim,M Hibino,J T Mitchell,K Okada,K Shigaki,D Pal,I Tserruya,J.-C Peng,S Borenstein,J G Lajoie,X Camard,F Mühlbacher,R Hayano,H Buesching,V V Ikonnikov,M R Shaw,S Nagamiya,G C Mishra,A Denisov,C Pinkenburg,K Homma,T Sugitate,R Granier De Cassagnac,M Ono,V Kochetkov,I E Yushmanov,M Kopytine,S F Pate,S Esumi,H Tydesjö,I J Choi,A Taketani,A K Mohanty,D Mukhopadhyay,B M Johnson,R Lacey,W Guryn,S Leckey,M Muniruzzaman,T Nakamura,M Gonin,S Butsyk,J M Burward-Hoy,T L Thomas,I Otterlund,P Constantin,M Harvey,V Samsonov,A D Frawley,N N Ajitanand,L Ewell,B D Fox,E Melnikov,N Bruner,F Matathias,V Riabov,S Sakai,W Holzmann,T Peitzmann,A Drees,E O’Brien,D D’Enterria,A Malakhov,H Lim,J L Nagle,V Bumazhnov,V Baublis,D Kotchetkov,J Tojo,F Fleuret,V Pantuev,A Ster,A Glenn,F Messer,M Velkovsky,R E Mischke,S Garpman,M L Brooks,C P Singh,M Nara,L Villatte,P L Mcgaughey,V Semenov,R Seto,O Jinnouchi,D P Morrison,Y Cobigo,H W Van Hecke,S P Stoll,S S Ryu,X R Wang ,D J Kim ,J.p Sullivan ,H Ohnìshì ,J S Chai ,S P Sørensen ,M X Liu ,C L Silva ,А Виноградов ,B Jacak ,V Manko ,V Onuchìn ,E Kim ,D H Kim ,D W Kim ,G-B Kim ,Hisao Kobayashi ,Y Liu ,A P.t Palounek ,Kazuhiro Tanaka ,М А Volkov ,D M Lee ,С Беликов ,S Y Fung ,S Greene ,C Maguire ,Jun Kikuchi ,Y Schütz ,A Hansen ,Susumu Sato ,Tarun Kanti Ghosh ,J Gösset ,B Cole ,V P Ladygin ,A Öskarsson ,S White ,M Marx ,C Woody ,C A Aidala ,Yu Seon Jeong ,X Q He ,C Zhang ,G Martı́nez ,J Park ,Naoki Hayashi ,H J Kim ,C Y ,S Lee ,S Fokin ,H Sato ,Yi Yang ,V K Singh ,Christian Klein-Boesing ,T A Shibata ,X H Li ,F Plášil ,H Å Gustafsson

doi:10.1103/physrevlett.94.122302

Abstract

The production of deuterons and antideuterons in the transverse momentum range 1.1<p(T)<4.3 GeV/c at midrapidity in Au+Au collisions at square root of s(NN)=200 GeV has been studied by the PHENIX experiment at RHIC. A coalescence analysis, comparing the deuteron and antideuteron spectra with that of proton and antiproton, has been performed. The coalescence probability is equal for both deuterons and antideuterons and it increases as a function of p(T), which is consistent with an expanding collision zone. Comparing (anti)proton yields, p /p=0.73+/-0.01, with (anti)deuteron yields, d /d=0.47+/-0.03, we estimate that n /n=0.64+/-0.04. The nucleon phase space density is estimated from the coalescence measurement.

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