Scaling properties of proton and antiproton production in root s(NN)=200 GeV Au+Au collisions

Summary, in English

We report on the yield of protons and antiprotons, as a function of centrality and transverse momentum, in Au+Au collisions at rootS(NN)=200 GeV measured at midrapidity by the PHENIX experiment at the BNL Relativistic Heavy Ion Collider. In central collisions at intermediate transverse momenta (1.5<p(T)<4.5 GeV/c) a significant fraction of all produced particles are protons and antiprotons. They show a centrality-scaling behavior different from that of pions. The (p) over bar/pi and p/pi ratios are enhanced compared to peripheral Au+Au, p+p, and e(+)e(-) collisions. This enhancement is limited to p(T)<5 GeV/c as deduced from the ratio of charged hadrons to pi(0) measured in the range 1.5<p(T)<9 GeV/c.

• Author: SS Adler; S Afanasiev; C Aidala; NN Ajitanand; Y Akiba; J Alexander; R Amirikas; L Aphecetche; SH Aronson; R Averbeck; TC Awes; R Azmoun; V Babintsev; A Baldisseri; KN Barish; PD Barnes; B Bassalleck; S Bathe; S Batsouli; V Baublis; A Bazilevsky; S Belikov; Y Berdnikov; S Bhagavatula; JG Boissevain; H Borel; S Borenstein; ML Brooks; DS Brown; N Bruner; D Bucher; H Buesching; V Bumazhnov; G Bunce; JM Burward-Hoy; S Butsyk; X Camard; JS Chai; P Chand; WC Chang; S Chernichenko; CY Chi; J Chiba; M Chiu; IJ Choi; J Choi; RK Choudhury; T Chujo; V Cianciolo; Y Cobigo; BA Cole; P Constantin; DG d'Enterria; G David; H Delagrange; A Denisov; A Deshpande; EJ Desmond; O Dietzsch; O Drapier; A Drees; Rickard du Rietz; A Durum; D Dutta; YV Efremenko; K El Chenawi; A Enokizono; H En'yo; S Esumi; L Ewell; DE Fields; F Fleuret; SL Fokin; BD Fox; Z Fraenkel; JE Frantz; A Franz; AD Frawley; SY Fung; Sten Garpman; TK Ghosh; A Glenn; G Gogiberidze; M Gonin; J Gosset; Y Goto; RG de Cassagnac; N Grau; SV Greene; G Grosse Perdekamp; W Guryn; Hans-Åke Gustafsson; T Hachiya; JS Haggerty; H Hamagaki; AG Hansen; EP Hartouni; M Harvey; R Hayano; X He; M Heffner; TK Hemmick; JM Heuser; M Hibino; JC Hill; W Holzmann; K Homma; B Hong; A Hoover; T Ichihara; VV Ikonnikov; K Imai; LD Isenhower; M Ishihara; M Issah; A Isupov; BV Jacak; WY Jang; Y Jeong; J Jia; O Jinnouchi; BM Johnson; SC Johnson; KS Joo; D Jouan; S Kametani; N Kamihara; JH Kang; SS Kapoor; K Katou; S Kelly; B Khachaturov; A Khanzadeev; J Kikuchi; DH Kim; DJ Kim; DW Kim; E Kim; GB Kim; HJ Kim; E Kistenev; A Kiyomichi; K Kiyoyama; C Klein-Boesing; H Kobayashi; L Kochenda; V Kochetkov; D Koehler; T Kohama; M Kopytine; D Kotchetkov; A Kozlov; PJ Kroon; CH Kuberg; K Kurita; Y Kuroki; MJ Kweon; Y Kwon; GS Kyle; R Lacey; V Ladygin; JG Lajoie; A Lebedev; S Leckey; DM Lee; S Lee; MJ Leitch; XH Li; H Lim; A Litvinenko; MX Liu; Y Liu; CF Maguire; YI Makdisi; A Malakhov; VI Manko; Y Mao; G Martinez; MD Marx; H Masui; F Matathias; T Matsumoto; PL McGaughey; E Melnikov; F Messer; Y Miake; J Milan; TE Miller; A Milov; S Mioduszewski; RE Mischke; GC Mishra; JT Mitchell; AK Mohanty; DP Morrison; JM Moss; F Muhlbacher; D Mukhopadhyay; M Muniruzzaman; J Murata; S Nagamiya; JL Nagle; T Nakamura; BK Nandi; M Nara; J Newby; Pål Nilsson; AS Nyanin; Joakim Nystrand; E O'Brien; CA Ogilvie; H Ohnishi; ID Ojha; K Okada; M Ono; V Onuchin; Anders Oskarsson; Ingvar Otterlund; K Oyama; K Ozawa; D Pal; APT Palounek; VS Pantuev; V Papavassiliou; J Park; A Parmar; SF Pate; T Peitzmann; JC Peng; V Peresedov; C Pinkenburg; RP Pisani; F Plasil; ML Purschke; A Purwar; J Rak; I Ravinovich; KF Read; M Reuter; K Reygers; V Riabov; Y Riabov; G Roche; A Romana; M Rosati; P Rosnet; SS Ryu; ME Sadler; N Saito; T Sakaguchi; M Sakai; S Sakai; V Samsonov; L Sanfratello; R Santo; HD Sato; S Sato; S Sawada; Y Schutz; V Semenov; R Seto; MR Shaw; TK Shea; TA Shibata; K Shigaki; T Shiina; CL Silva; David Silvermyr; KS Sim; CP Singh; V Singh; M Sivertz; A Soldatov; RA Soltz; WE Sondheim; SP Sorensen; IV Sourikova; F Staley; PW Stankus; Evert Stenlund; M Stepanov; A Ster; SP Stoll; T Sugitate; JP Sullivan; EM Takagui; A Taketani; M Tamai; KH Tanaka; Y Tanaka; K Tanida; MJ Tannenbaum; P Tarjan; JD Tepe; TL Thomas; J Tojo; H Torii; RS Towell; I Tserruya; H Tsuruoka; SK Tuli; Henrik Tydesjö; N Tyurin; HW van Hecke; J Velkovska; M Velkovsky; L Villatte; AA Vinogradov; MA Volkov; E Vznuzdaev; XR Wang; Y Watanabe; SN White; FK Wohn; CL Woody; W Xie; Y Yang; A Yanovich; S Yokkaichi; GR Young; IE Yushmanov; WA Zajc; C Zhang; S Zhou; L Zolin
• Department/s: Department of Physics; Particle and nuclear physics
• Publishing year: 2003
• Language: English
• Publication/Series: Physical Review Letters
• Volume: 91
• Issue: 17: 172301
• Links: http://link.aps.org/abstract/PRL/v91/e172301; http://dx.doi.org/10.1103/PhysRevLett.91.172301
• Document type: Journal article
• Publisher: American Physical Society
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 1079-7114