| Thème(s) : |
 |
Physique/Physique Nucléaire Expérimentale
|
|
| Titre : |
|
Charmed hadron production at low transverse momentum in Au+Au collisions at RHIC |
|
| Auteur : |
|
B.I. Abelev, M.M. Aggarwal, Z. Ahammed, B.D. Anderson, D. Arkhipkin, G.S. Averichev, Y. Bai, J. Balewski, O. Barannikova, L.S. Barnby, J. Baudot1, S. Baumgart, V.V. Belaga, A. Bellingeri-Laurikainen2, R. Bellwied, F. Benedosso, R.R. Betts, S. Bhardwaj, A. Bhasin, A.K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, L.C. Bland, S.-L. Blyth, M. Bombara, B.E. Bonner, M. Botje, J. Bouchet2, A.V. Brandin, T.P. Burton, M. Bystersky, X.Z. Cai, H. Caines, M. Calder'on De La Barca S'anchez, J. Callner, O. Catu, D. Cebra, M.C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H.F. Chen, J.H. Chen, J.Y. Chen, J. Cheng, M. Cherney, A. Chikanian, W. Christie, S.U. Chung, R.F. Clarke, M.J.M. Codrington, J.P. Coffin1, T.M. Cormier, M.R. Cosentino, J.G. Cramer, H.J. Crawford, D. Das, S. Dash, M. Daugherity, M.M. de Moura, T.G. Dedovich, M. Dephillips, A.A. Derevschikov, L. Didenko, T. Dietel, P. Djawotho, S.M. Dogra, X. Dong, J.L. Drachenberg, J.E. Draper, F. Du, V.B. Dunin, J.C. Dunlop, M.R. Dutta Mazumdar, W.R. Edwards, L.G. Efimov, V. Emelianov, J. Engelage, G. Eppley, B. Erazmus2, M. Estienne1, P. Fachini, R. Fatemi, J. Fedorisin, A. Feng, P. Filip, E. Finch, V. Fine, Y. Fisyak, J. Fu, C.A. Gagliardi, L. Gaillard, M.S. Ganti, E. Garcia-Solis, V. Ghazikhanian, P. Ghosh, Y.N. Gorbunov, H. Gos, O. Grebenyuk, D. Grosnick, B. Grube, S.M. Guertin, K.S.F.F. Guimaraes, A. Gupta, N. Gupta, B. Haag, T.J. Hallman, A. Hamed, J.W. Harris, W. He, M. Heinz, T.W. Henry, S. Heppelmann, B. Hippolyte1, A. Hirsch, E. Hjort, A.M. Hoffman, G.W. Hoffmann, D.J. Hofman, R.S. Hollis, M.J. Horner, H.Z. Huang, E.W. Hughes, T.J. Humanic, G. Igo, A. Iordanova, P. Jacobs, W.W. Jacobs, P. Jakl, P.G. Jones, E.G. Judd, S. Kabana2, K. Kang, J. Kapitan, M. Kaplan, D. Keane, A. Kechechyan, D. Kettler, V.Yu. Khodyrev, J. Kiryluk, A. Kisiel, E.M. Kislov, S.R. Klein, A.G. Knospe, A. Kocoloski, D.D. Koetke, T. Kollegger, M. Kopytine, L. Kotchenda, V. Kouchpil, K.L. Kowalik, P. Kravtsov, V.I. Kravtsov, K. Krueger, C. Kuhn1, A.I. Kulikov, A. Kumar, P. Kurnadi, A.A. Kuznetsov, M.A.C. Lamont, J.M. Landgraf, S. Lange, S. Lapointe, F. Laue, J. Lauret, A. A. Lebedev, R. Lednicky, C.-H. Lee, S. Lehocka, M.J. LeVine, C. Li, Q. Li, Y. Li, G. Lin, X. Lin, S.J. Lindenbaum, M.A. Lisa, F. Liu, H. Liu, J. Liu, L. Liu, T. Ljubicic, W.J. Llope, R.S. Longacre, W.A. Love, Y. Lu, T. Ludlam, D. Lynn, G.L. Ma, J.G. Ma, Y.G. Ma, D.P. Mahapatra, R. Majka, L.K. Mangotra, R. Manweiler, S. Margetis, C. Markert, L. Martin2, H.S. Matis, Yu.A. Matulenko, T.S. McShane, A. Meschanin, J. Millane, M.L. Miller, N.G. Minaev, S. Mioduszewski, A. Mischke, J. Mitchell, B. Mohanty, D.A. Morozov, M.G. Munhoz, B.K. Nandi, C. Nattrass, T.K. Nayak, J.M. Nelson, C. Nepali, P.K. Netrakanti, L.V. Nogach, S.B. Nurushev, G. Odyniec, A. Ogawa, V. Okorokov, D. Olson, M. Pachr, S.K. Pal, Y. Panebratsev, A.I. Pavlinov, T. Pawlak, T. Peitzmann, V. Perevoztchikov, C. Perkins, W. Peryt, S.C. Phatak, M. Planinic, J. Pluta, N. Poljak, N. Porile, A.M. Poskanzer, M. Potekhin, E. Potrebenikova, B.V.K.S. Potukuchi, D. Prindle, C. Pruneau, N.K. Pruthi, J. Putschke, I.A. Qattan, R. Raniwala, S. Raniwala, R.L. Ray, D. Relyea, A. Ridiger, H.G. Ritter, J.B. Roberts, O.V. Rogachevskiy, J.L. Romero, A. Rose, C. Roy2, L. Ruan, M.J. Russcher, R. Sahoo, I. Sakrejda, T. Sakuma, S. Salur, J. Sandweiss, M. Sarsour, P.S. Sazhin, J. Schambach, R.P. Scharenberg, N. Schmitz, J. Seger, I. Selyuzhenkov, P. Seyboth, A. Shabetai1, E. Shahaliev, M. Shao, M. Sharma, W.Q. Shen, S.S. Shimanskiy, E.P. Sichtermann, F. Simon, R.N. Singaraju, N. Smirnov, R. Snellings, P. Sorensen, J. Sowinski, J. Speltz1, H.M. Spinka, B. Srivastava, A. Stadnik, T.D.S. Stanislaus, D. Staszak, R. Stock, M. Strikhanov, B. Stringfellow, A.A.P. Suaide, M.C. Suarez, N.L. Subba, M. Sumbera, X.M. Sun, Z. Sun, B. Surrow, T.J.M. Symons, A. Szanto de Toledo, J. Takahashi, A.H. Tang, T. Tarnowsky, J.H. Thomas, A.R. Timmins, S. Timoshenko, M. Tokarev, T.A. Trainor, S. Trentalange, R.E. Tribble, O.D. Tsai, J. Ulery, T. Ullrich, D.G. Underwood, G. Van, N. Van Der Kolk, M. Van Leeuwen, A.M. Vander Molen, R. Varma, I.M. Vasilevski, A.N. Vasiliev, R. Vernet1, S.E. Vigdor, Y.P. Viyogi, S. Vokal, S.A. Voloshin, M. Wada, W.T. Waggoner, F. Wang, G. Wang, J.S. Wang, X.L. Wang, Y. Wang, J.C. Webb, G.D. Westfall, C. Whitten Jr., H. Wieman, S.W. Wissink, R. Witt, J. Wu, Y. Wu, N. Xu, Q.H. Xu, Z. Xu, P. Yepes, I.-K. Yoo, Q. Yue, V.I. Yurevich, M. Zawisza, W. Zhan, H. Zhang, W.M. Zhang, Y. Zhang, Z.P. Zhang |
|
| Laboratoire : |
|
|
|
| Résumé : |
|
We report measurements of charmed hadron production from hadronic ($D\to K\pi$) and semileptonic ($\mu$ and $e$) decays in 200 GeV Au+Au collisions at RHIC. Analysis of the spectra indicates that charmed hadrons have a different radial flow pattern from light or multi-strange hadrons. Charm cross sections at mid-rapidity are extracted by combining the three independent measurements, covering the transverse momentum range that contributes to $\sim$90% of the integrated cross section. The cross sections scale with number of binary collisions of the initial nucleons, a signature of charm production exclusively at the initial impact of colliding heavy ions. The implications for charm quark interaction and thermalization in the strongly interacting matter are discussed. |
|
| Collaboration/Projet : |
|
STAR |
|
|
| Type de publication : |
|
Pré-publications |
|
Date de publication
ou d'écriture : |
|
2008 |
|
|
| Commentaire : |
|
6 pages and 4 figures, for STAR Collaboration, submitted to PRL |
|
|
Récupérer au format
