Open Charm Yields In D+Au Collisions At Root S(Nn)=200 Gev

J. Adams,M. Aggarwal, Z. Ahammed,J. Amonett,B. Anderson,D. Arkhipkin,G. Averichev,S. Badyal, Y. Bai,J. Balewski,O. Barannikova,L. Barnby,J. Baudot,S. Bekele,V. Belaga, R. Bellwied,J. Berger,B. Bezverkhny,S. Bharadwaj,A. Bhasin,A. Bhati,V. Bhatia,H. Bichsel,A. Billmeier,L. Bland,C. Blyth,B. Bonner,M. Botje, A. Boucham,A. Brandin,A. Bravar,M. Bystersky,R. Cadman,X. Cai, H. Caines,M. Calderón de la Barca Sánchez,J. Castillo, D. Cebra,Z. Chajecki,P. Chaloupka,S. Chattopadhyay,H. Chen,Y. Chen,J. Cheng,M. Cherney, A. Chikanian,W. Christie,J. Coffin,T. Cormier,J. Cramer,H. Crawford,D. Das,S. Das,M. de Moura,A. Derevschikov,L. Didenko,T. Dietel,S. Dogra,W. Dong, X. Dong,J. Draper,F. Du,A. Dubey,V. Dunin,J. Dunlop,M. Dutta Mazumdar,V. Eckardt,W. Edwards,L. Efimov,V. Emelianov,J. Engelage, G. Eppley,B. Erazmus,M. Estienne,P. Fachini,J. Faivre,R. Fatemi,J. Fedorisin,K. Filimonov,P. Filip,E. Finch,V. Fine,Y. Fisyak,K. Fomenko,J. Fu,C. Gagliardi,L. Gaillard,J. Gans,M. Ganti,L. Gaudichet,F. Geurts,V. Ghazikhanian,P. Ghosh,J. Gonzalez,O. Grachov,O. Grebenyuk,D. Grosnick,S. Guertin,Y. Guo, A. Gupta,T. Gutierrez,T. Hallman,A. Hamed,D. Hardtke,J. Harris,M. Heinz,T. Henry,S. Hepplemann, B. Hippolyte, A. Hirsch, E. Hjort,G. Hoffmann,H. Huang,S. Huang,E. Hughes,T. Humanic,G. Igo,A. Ishihara, P. Jacobs,W. Jacobs,M. Janik,H. Jiang, P. Jones,E. Judd,S. Kabana,K. Kang,M. Kaplan,D. Keane,V. Khodyrev,J. Kiryluk,A. Kisiel,E. Kislov,J. Klay,S. Klein,D. Koetke,T. Kollegger,M. Kopytine,L. Kotchenda,M. Kramer,P. Kravtsov,V. Kravtsov, K. Krueger,C. Kuhn, A. Kulikov, A. Kumar,R. Kutuev,A. Kuznetsov,M. Lamont,J. Landgraf,S. Lange,F. Laue, J. Lauret,A. Lebedev,R. Lednicky,S. Lehocka,M. LeVine,C. Li,Q. Li, Y. Li, G. Lin, S. Lindenbaum,M. Lisa, F. Liu,L. Liu,Q. Liu,Z. Liu,T. Ljubicic,W. Llope,H. Long,R. Longacre,M. Lopez-Noriega,W. Love,Y. Lu,T. Ludlam, D. Lynn,G. Ma,J. Ma,Y. Ma,D. Magestro,S. Mahajan,D. Mahapatra,R. Majka,L. Mangotra,R. Manweiler,S. Margetis, C. Markert,L. Martin,J. Marx,H. Matis,Yu. Matulenko,C. McClain,T. McShane,F. Meissner,Yu. Melnick, A. Meschanin,M. Miller,N. Minaev, C. Mironov, A. Mischke,D. Mishra,J. Mitchell,B. Mohanty,L. Molnar,C. Moore,D. Morozov,M. Munhoz,B. Nandi,S. Nayak,T. Nayak,J. Nelson,P. Netrakanti, V. Nikitin,L. Nogach,S. Nurushev,G. Odyniec,A. Ogawa,V. Okorokov,M. Oldenburg, D. Olson,S. Pal,Y. Panebratsev, S. Panitkin,A. Pavlinov,T. Pawlak,T. Peitzmann,V. Perevoztchikov,C. Perkins, W. Peryt,V. Petrov,S. Phatak,R. Picha,M. Planinic, J. Pluta,N. Porile,J. Porter,A. Poskanzer,M. Potekhin,E. Potrebenikova,B. Potukuchi,D. Prindle,C. Pruneau, J. Putschke, G. Rakness, R. Raniwala, S. Raniwala,O. Ravel,R. Ray,S. Razin,D. Reichhold,J. Reid, G. Renault,F. Retiere,A. Ridiger,H. Ritter,J. Roberts,O. Rogachevskiy, J. Romero, A. Rose, C. Roy,L. Ruan,R. Sahoo,I. Sakrejda, S. Salur,J. Sandweiss,M. Sarsour, I. Savin,P. Sazhin,J. Schambach,R. Scharenberg,N. Schmitz,K. Schweda,J. Seger,P. Seyboth,E. Shahaliev,M. Shao,W. Shao,M. Sharma,W. Shen,K. Shestermanov,S. Shimanskiy,E Sichtermann,F. Simon,R. Singaraju,G. Skoro, N. Smirnov,R. Snellings,G. Sood,P. Sorensen, J. Sowinski,J. Speltz,H. Spinka, B. Srivastava,A. Stadnik,T. Stanislaus,R. Stock,A. Stolpovsky,M. Strikhanov,B. Stringfellow,A. Suaide, E. Sugarbaker, C. Suire,M. Sumbera,B. Surrow,T. Symons,A. Szanto de Toledo,P. Szarwas,A. Tai,J. Takahashi,A. Tang,T. Tarnowsky,D. Thein,J. Thomas,S. Timoshenko,M. Tokarev,T. Trainor,S. Trentalange,R. Tribble,O. Tsai,J. Ulery,T. Ullrich,D. Underwood,A. Urkinbaev,G. Van Buren,M. van Leeuwen,A. Vander Molen,R. Varma,I. Vasilevski,A. Vasiliev,R. Vernet,S. Vigdor,Y. Viyogi,S. Vokal,S. Voloshin,M. Vznuzdaev,W. Waggoner,F. Wang,G. Wang,X. Wang,Y. Wang, Z. Wang,H. Ward,J. Watson,J. Webb,R. Wells,G. Westfall,A. Wetzler,C. Whitten,H. Wieman,S. Wissink,R. Witt,J. Wood,J. Wu,N. Xu,Z. Xu,E. Yamamoto,P. Yepes,V. Yurevich,Y. Zanevsky,H. Zhang, W. Zhang,Z. Zhang,R. Zoulkarneev,Y. Zoulkarneeva,A. Zubarev

PHYSICAL REVIEW LETTERS（2005）

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摘要

Midrapidity open charm spectra from direct reconstruction of D-0((D) over bar (0))-->K(-/+)pi(+/-) in d(+)Au collisions and indirect electron-positron measurements via charm semileptonic decays in p+p and d+Au collisions at roots(NN)=200 GeV are reported. The D-0((D) over bar (0)) spectrum covers a transverse momentum (p(T)) range of 0.1< p(T) < 3 GeV/c, whereas the electron spectra cover a range of 1< p(T) < 4 GeV/c. The electron spectra show approximate binary collision scaling between p+p and d+Au collisions. From these two independent analyses, the differential cross section per nucleon-nucleon binary interaction at midrapidity for open charm production from d+Au collisions at BNL RHIC is dsigma(c)((c)) over bar (NN)/dy=0.30+/-0.04(stat)+/-0.09(syst) mb. The results are compared to theoretical calculations. Implications for charmonium results in A+A collisions are discussed.

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