Transverse Momentum and Centrality Dependence of High-pTNonphotonic Electron Suppression inAu+AuCollisions atsNN=200  GeV

B I Abelev,X L Wang,D Magestro,P K Netrakanti,Y G Gorbunov,J Millane,J W Harris,F Laue,J Y Chen,C A Gagliardi,J Baudot,J H Chen,B Haag,D Arkhipkin,J Cheng,R P Scharenberg,P Kurnadi,S Mioduszewski,Y Panebratsev,M Sarsour,A Wetzler,V Fine,S Trentalange,O Barannikova,W He,D Staszak,A Ogawa,J X Zuo,Y Bai,T Ullrich,R L Ray,T J Humanic,N Gupta,D Lynn,D P Mahapatra,A Bhasin,J Engelage,J S Wang,M Pachr,S Margetis,Y Lu,M M De Moura,T Peitzmann,M Cherney,B K Nandi,D G Underwood,A V Brandin,W R Edwards,B Surrow,W M Zhang,Y Wu,V B Dunin,J Kapitan,F Benedosso,J E Draper,E P Sichtermann,R Vernet,P Chaloupka,C Nattrass,S Raniwala,A Meschanin,J Lauret,R Witt,A A Derevschikov,F Liu,G Eppley,W J Llope,A Ridiger,H Bichsel,H G Ritter,S J Lindenbaum,C J Mcclain,T Kollegger,V Kouchpil,M Shao,J Putschke,H Caines,A Shabetai,S M Guertin,L G Efimov,C Whitten,H J Crawford,J Ulery,L S Barnby,O D Tsai,G D Westfall,J C Dunlop,B Mohanty,W Zhan,S Lange,A Kechechyan,N Van Der Kolk,S Timoshenko,B Erazmus,J Takahashi,D Cebra,V Eckardt,S C Phatak,C Pruneau,G Wang,M Heinz,Y Zoulkarneeva,A Stadnik,K Krueger,S Kabana,L Liu,E G Judd,R Sahoo,I Selyuzhenkov,Z P Zhang,A N Zubarev,S U Chung,F Wang,R S Longacre,Z Sun,W W Jacobs,J Sandweiss,P Jacobs,M J Russcher,D Relyea,H F Chen,N S Nepali,A Kisiel,A H Tang,S W Wissink,A Bravar,L Didenko,M J Levine,A Chikanian,T D S Stanislaus,P Sorensen,F Simon,M Strikhanov,M S Ganti,M Kopytine,R Fatemi,J L Drachenberg,R R Betts,M R Dutta Mazumdar,R Stock,P Ghosh,H Gos,N Schmitz,M Bombara,P Djawotho,J Pluta,B C Kim,S Bhardwaj,D Grosnick,C Li,W T Waggoner,R Majka,S R Klein,R Raniwala,Y Wang,S Dash,N Smirnov,Y Li,A M Vander Molen,R Manweiler,J Liu,M M Aggarwal,H Wieman,E M Kislov,F Du,X M Sun,T P Burton,T S Mcshane,Y P Viyogi,Y Zhao,R Zoulkarneev,B Stringfellow,J M Nelson,E Shahaliev,C Perkins,W A Love,A I Pavlinov,E Hjort,P Fachini,M R Cosentino,D Keane,G S Averichev,M Tokarev,D Prindle,M Dephillips,A R Timmins,V I Yurevich,M Daugherity,B E Bonner,D Das,P Yepes,H S Matis,G Odyniec,B D Anderson,S B Nurushev,G W Hoffmann,A Hirsch,S Salur,M A Lisa,T M Cormier,X Dong,N Porile,T Dietel,I A Qattan,R Varma,T G Dedovich,E Potrebenikova,L K Mangotra,J Balewski,X Lin,A Mischke,T A Trainor,A Kocoloski,A M Poskanzer,T Tarnowsky,M Kaplan,M C Suarez,A G Knospe,Q Yue,A Iordanova,L C Bland,M Estienne,W Q Shen,D D Koetke,M G Munhoz,K Kang,Y Zhang,Q Li,I M Vasilevski,M J Horner,Z Xu,N Xu,T W Henry,A K Bhati,Z Ahammed,T J Hallman,J P Coffin,R V Cadman,V Perevoztchikov,J Callner,A Lebedev,P Seyboth,H Zhang,S Lapointe,G Igo,H Liu,T Ludlam,J Fu,C Mironov,J Kiryluk,T Pawlak,V V Belaga,A M Hoffman,V Okorokov,J Schambach,J L Romero,P S Sazhin,N Poljak,S Chattopadhyay,B Srivastava,W Christie,A Feng,M Oldenburg,C Roy,J C Webb,S S Shimanskiy,R E Tribble,V Ghazikhanian,Yu A Matulenko,H M Spinka,M Botje,A Hamed,W Peryt,L V Nogach,G Van Buren,J W Watson,J M Landgraf,L Gaillard,N L Subba,J G Cramer,J Speltz,L Ruan,P Jakl,A Rose,D Olson,A Bellingeri-Laurikainen,V I Kravtsov,G Lin,S Heppelmann,N G Minaev,J Seger,O Catu,Y Fisyak,J Bouchet,L Kotchenda,B Hippolyte,C Kuhn,Q H Xu,S E Vigdor,T Sakuma,H Z Huang,E Finch,T K Nayak,M Potekhin,T J M Symons,I Sakrejda,A Szanto De Toledo,O V Rogachevskiy,J H Thomas,R Bellwied,P Filip,C Markert,M Van Leeuwen,J Bielčíková ,А А Кузнецов ,J Roberts ,G L ,B Potukuchi ,R Lednický ,Fei Jia ,Raimond Snellings ,Д А Морозов ,S Blyth ,Meenakshi Sharma ,X Cai ,E García-Solis ,Arun Kumar ,M A.c Lamont ,C H Lee ,J Fedorišin ,P Jones ,K Kowalik ,I.-K Yoo ,V Yu Khodyrev ,S Voloshin ,R S Hollis ,А И Куликов ,Subrata Pal ,M Planinić ,E Hughes ,J Bielčík ,J G ,T Ljubičić ,David Kettler ,S Lehocká ,M D.s De La Barca ,В Емелянов ,Jing Zhou ,S Dogra ,Z Chajęcki ,Alexandre Alarcon Do Passo Suaide ,J Sowiński ,K S.f.f Guimaraes ,M Bysterský ,M Šumbera ,A Vasiliev ,Y G ,L M Garcia Martin ,Zhong Chen ,J T Mitchell ,П Кравцов ,Yu Melnick ,R Singaraju ,Stephen Baumgart ,S Vokál ,Jian Wu ,O G Grebenyuk ,Michael L Miller ,D J Hofman

doi:10.1103/physrevlett.98.192301

Abstract

The STAR collaboration at the BNL Relativistic Heavy-Ion Collider (RHIC) reports measurements of the inclusive yield of nonphotonic electrons, which arise dominantly from semileptonic decays of heavy flavor mesons, over a broad range of transverse momenta (1.2<pT<10 GeV/c) in p+p, d+Au, and Au+Au collisions at sNN=200 GeV. The nonphotonic electron yield exhibits an unexpectedly large suppression in central Au+Au collisions at high pT, suggesting substantial heavy-quark energy loss at RHIC. The centrality and pT dependences of the suppression provide constraints on theoretical models of suppression.Received 11 July 2006DOI:https://doi.org/10.1103/PhysRevLett.98.192301©2007 American Physical Society

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