Centrality dependence of charm production from a measurement of single electrons in Au plus Au collisions at root s(NN)=200 GeV

Summary, in English

The PHENIX experiment has measured midrapidity transverse momentum spectra (0.4<p(T)<4.0 GeV/c) of single electrons as a function of centrality in Au+Au collisions at roots(NN) = 200 GeV. Contributions from photon conversions and Dalitz decays of light neutral mesons are measured by introducing a thin (1.7% X-0) converter into the PHENIX acceptance and are statistically removed. The subtracted nonphotonic electron spectra are primarily due to the semileptonic decays of hadrons containing heavy quarks, mainly charm at lower p(T). For all centralities, the charm production cross section is found to scale with the nuclear overlap function, T-AA. For minimum-bias collisions the charm cross section per binary collision is N-c (c) over bar/T-AA=622+/-57(stat)+/-160(syst) mub.

• 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; A Devismes; 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; R Granier de Cassagnac; N Grau; SV Greene; M Grosse Perdekamp; W Guryn; Hans-Åke Gustafsson; T Hachiya; JS Haggerty; H Hamagaki; AG Hansen; EP Hartouni; M Harvey; R Hayano; N Hayashi; 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; D 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; AK 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; V Veszpremi; 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; SJ Zhou; L Zolin
• Department/s: Department of Physics; Particle and nuclear physics
• Publishing year: 2005
• Language: English
• Publication/Series: Physical Review Letters
• Volume: 94
• Issue: 8
• Links: http://dx.doi.org/10.1103/PhysRevLett.94.082301
• Document type: Journal article
• Publisher: American Physical Society
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 1079-7114