Phys. Rev. Lett.
93,
162002
(2004)
[6 pages]
Observation and Properties of the X(3872) Decaying to J/ψπ+π- in pp̅ Collisions at √s=1.96 TeV
V. M. Abazov et al. D0 Collaboration
Show All Authors/Affiliations
Hide All Authors/Affiliations
V. M. Abazov32, B. Abbott69, M. Abolins60, B. S. Acharya26, D. L. Adams67, M. Adams47, T. Adams45, M. Agelou16, J.-L. Agram17, S. N. Ahmed31, S. H. Ahn28, G. D. Alexeev32, G. Alkhazov36, A. Alton59, G. Alverson58, G. A. Alves2, S. Anderson41, B. Andrieu15, Y. Arnoud12, A. Askew72, B. Åsman37, C. Autermann19, C. Avila7, L. Babukhadia66, T. C. Bacon39, A. Baden56, S. Baffioni13, B. Baldin46, P. W. Balm30, S. Banerjee26, E. Barberis58, P. Bargassa72, P. Baringer53, C. Barnes39, J. Barreto2, J. F. Bartlett46, U. Bassler15, D. Bauer50, A. Bean53, S. Beauceron15, F. Beaudette14, M. Begel65, S. B. Beri25, G. Bernardi15, I. Bertram38, M. Besançon16, A. Besson17, R. Beuselinck39, V. A. Bezzubov35, P. C. Bhat46, V. Bhatnagar25, M. Bhattacharjee66, M. Binder23, A. Bischoff44, K. M. Black57, I. Blackler39, G. Blazey48, F. Blekman30, D. Bloch17, U. Blumenschein21, A. Boehnlein46, T. A. Bolton54, P. Bonamy16, F. Borcherding46, G. Borissov38, K. Bos30, T. Bose64, C. Boswell44, A. Brandt71, G. Briskin70, R. Brock60, G. Brooijmans64, A. Bross46, D. Buchholz49, M. Buehler47, V. Buescher21, S. Burdin46, T. H. Burnett74, E. Busato15, J. M. Butler57, J. Bystricky16, F. Canelli65, W. Carvalho3, B. C. K. Casey70, D. Casey60, N. M. Cason51, H. Castilla-Valdez29, S. Chakrabarti26, D. Chakraborty48, K. M. Chan65, A. Chandra26, D. Chapin70, F. Charles17, E. Cheu41, L. Chevalier16, D. K. Cho65, S. Choi44, S. Chopra67, T. Christiansen23, L. Christofek53, D. Claes62, A. R. Clark42, C. Clément37, Y. Coadou5, D. J. Colling39, L. Coney51, B. Connolly45, W. E. Cooper46, D. Coppage53, M. Corcoran72, J. Coss18, A. Cothenet13, M.-C. Cousinou13, S. Crépé-Renaudin12, M. Cristetiu44, M. A. C. Cummings48, D. Cutts70, H. da Motta2, B. Davies38, G. Davies39, G. A. Davis65, K. De71, P. de Jong30, S. J. de Jong31, E. De La Cruz-Burelo29, C. De Oliveira Martins3, S. Dean40, K. Del Signore59, F. Déliot16, P. A. Delsart18, M. Demarteau46, R. Demina65, P. Demine16, D. Denisov46, S. P. Denisov35, S. Desai66, H. T. Diehl46, M. Diesburg46, M. Doidge38, H. Dong66, S. Doulas58, L. Duflot14, S. R. Dugad26, A. Duperrin13, J. Dyer60, A. Dyshkant48, M. Eads48, D. Edmunds60, T. Edwards40, J. Ellison44, J. Elmsheuser23, J. T. Eltzroth71, V. D. Elvira46, S. Eno56, P. Ermolov34, O. V. Eroshin35, J. Estrada46, D. Evans39, H. Evans64, A. Evdokimov33, V. N. Evdokimov35, J. Fast46, S. N. Fatakia57, D. Fein41, L. Feligioni57, T. Ferbel65, F. Fiedler23, F. Filthaut31, H. E. Fisk46, F. Fleuret15, M. Fortner48, H. Fox21, W. Freeman46, S. Fu64, S. Fuess46, C. F. Galea31, E. Gallas46, E. Galyaev51, M. Gao64, C. Garcia65, A. Garcia-Bellido74, J. Gardner53, V. Gavrilov33, D. Gelé17, R. Gelhaus44, K. Genser46, C. E. Gerber47, Y. Gershtein70, G. Geurkov70, G. Ginther65, K. Goldmann24, T. Golling20, B. Gómez7, K. Gounder46, A. Goussiou51, G. Graham56, P. D. Grannis66, S. Greder17, J. A. Green52, H. Greenlee46, Z. D. Greenwood55, E. M. Gregores4, S. Grinstein1, J.-F. Grivaz14, L. Groer64, S. Grünendahl46, M. W. Grünewald27, W. Gu6, S. N. Gurzhiev35, G. Gutierrez46, P. Gutierrez69, A. Haas74, N. J. Hadley56, H. Haggerty46, S. Hagopian45, I. Hall69, R. E. Hall43, C. Han59, L. Han40, K. Hanagaki46, P. Hanlet71, K. Harder54, J. M. Hauptman52, R. Hauser60, C. Hays64, J. Hays49, C. Hebert53, D. Hedin48, J. M. Heinmiller47, A. P. Heinson44, U. Heintz57, C. Hensel53, G. Hesketh58, M. D. Hildreth51, R. Hirosky73, J. D. Hobbs66, B. Hoeneisen11, M. Hohlfeld22, S. J. Hong28, R. Hooper51, S. Hou59, Y. Hu66, J. Huang50, Y. Huang59, I. Iashvili44, R. Illingworth46, A. S. Ito46, S. Jabeen53, M. Jaffré14, S. Jain69, V. Jain67, K. Jakobs21, A. Jenkins39, R. Jesik39, Y. Jiang59, K. Johns41, M. Johnson46, P. Johnson41, A. Jonckheere46, P. Jonsson39, H. Jöstlein46, A. Juste46, M. M. Kado42, D. Käfer19, W. Kahl54, S. Kahn67, E. Kajfasz13, A. M. Kalinin32, J. Kalk60, D. Karmanov34, J. Kasper57, D. Kau45, Z. Ke6, R. Kehoe60, S. Kermiche13, S. Kesisoglou70, A. Khanov65, A. Kharchilava51, Y. M. Kharzheev32, K. H. Kim28, B. Klima46, M. Klute20, J. M. Kohli25, M. Kopal69, V. Korablev35, J. Kotcher67, B. Kothari64, A. V. Kotwal64, A. Koubarovsky34, A. Kouchner16, O. Kouznetsov12, A. V. Kozelov35, J. Kozminski60, J. Krane52, M. R. Krishnaswamy26, S. Krzywdzinski46, M. Kubantsev54, S. Kuleshov33, Y. Kulik46, S. Kunori56, A. Kupco16, T. Kurča18, V. E. Kuznetsov44, S. Lager37, N. Lahrichi16, G. Landsberg70, J. Lazoflores45, A.-C. Le Bihan17, P. Lebrun18, S. W. Lee28, W. M. Lee45, A. Leflat34, C. Leggett42, F. Lehner46,*, C. Leonidopoulos64, P. Lewis39, J. Li71, Q. Z. Li46, X. Li6, J. G. R. Lima48, D. Lincoln46, S. L. Linn45, J. Linnemann60, R. Lipton46, L. Lobo39, A. Lobodenko36, M. Lokajicek10, A. Lounis17, J. Lu6, H. J. Lubatti74, A. Lucotte12, L. Lueking46, C. Luo50, M. Lynker51, A. L. Lyon46, A. K. A. Maciel48, R. J. Madaras42, P. Mättig24, A.-M. Magnan12, M. Maity57, P. K. Mal26, S. Malik55, V. L. Malyshev32, V. Manankov34, H. S. Mao6, Y. Maravin46, T. Marshall50, M. Martens46, M. I. Martin48, S. E. K. Mattingly70, A. A. Mayorov35, R. McCarthy66, R. McCroskey41, T. McMahon68, D. Meder22, H. L. Melanson46, A. Melnitchouk70, X. Meng6, M. Merkin34, K. W. Merritt46, A. Meyer19, C. Miao70, H. Miettinen72, D. Mihalcea48, C. S. Mishra46, J. Mitrevski64, N. Mokhov46, J. Molina3, N. K. Mondal26, H. E. Montgomery46, R. W. Moore5, M. Mostafa1, G. S. Muanza18, M. Mulders46, Y. D. Mutaf66, E. Nagy13, F. Nang41, M. Narain57, V. S. Narasimham26, N. A. Naumann31, H. A. Neal59, J. P. Negret7, S. Nelson45, P. Neustroev36, C. Noeding21, A. Nomerotski46, S. F. Novaes4, T. Nunnemann23, E. Nurse40, V. O’Dell46, D. C. O’Neil5, V. Oguri3, N. Oliveira3, B. Olivier15, N. Oshima46, G. J. Otero y Garzón47, P. Padley72, K. Papageorgiou47, N. Parashar55, J. Park28, S. K. Park28, J. Parsons64, R. Partridge70, N. Parua66, A. Patwa67, P. M. Perea44, E. Perez16, O. Peters30, P. Pétroff14, M. Petteni39, L. Phaf30, R. Piegaia1, P. L. M. Podesta-Lerma29, V. M. Podstavkov46, B. G. Pope60, E. Popkov57, W. L. Prado da Silva3, H. B. Prosper45, S. Protopopescu67, M. B. Przybycien49,†, J. Qian59, A. Quadt20, B. Quinn61, K. J. Rani26, P. A. Rapidis46, P. N. Ratoff38, N. W. Reay54, J.-F. Renardy16, S. Reucroft58, J. Rha44, M. Ridel14, M. Rijssenbeek66, I. Ripp-Baudot17, F. Rizatdinova54, C. Royon16, P. Rubinov46, R. Ruchti51, B. M. Sabirov32, G. Sajot12, A. Sánchez-Hernández29, M. P. Sanders40, A. Santoro3, G. Savage46, L. Sawyer55, T. Scanlon39, R. D. Schamberger66, H. Schellman49, P. Schieferdecker23, C. Schmitt24, A. Schukin35, A. Schwartzman63, R. Schwienhorst60, S. Sengupta45, E. Shabalina47, V. Shary14, W. D. Shephard51, D. Shpakov58, R. A. Sidwell54, V. Simak9, V. Sirotenko46, D. Skow46, P. Slattery65, R. P. Smith46, K. Smolek9, G. R. Snow62, J. Snow68, S. Snyder67, S. Söldner-Rembold40, X. Song48, Y. Song71, L. Sonnenschein57, A. Sopczak38, V. Sorín1, M. Sosebee71, K. Soustruznik8, M. Souza2, N. R. Stanton54, J. Stark12, J. Steele64, G. Steinbrück64, K. Stevenson50, V. Stolin33, A. Stone47, D. A. Stoyanova35, J. Strandberg37, M. A. Strang71, M. Strauss69, R. Ströhmer23, M. Strovink42, L. Stutte46, A. Sznajder3, M. Talby13, P. Tamburello41, W. Taylor66, P. Telford40, J. Temple41, S. Tentindo-Repond45, E. Thomas13, B. Thooris16, M. Tomoto46, T. Toole56, J. Torborg51, S. Towers66, T. Trefzger22, S. Trincaz-Duvoid15, T. G. Trippe42, B. Tuchming16, C. Tully63, A. S. Turcot67, P. M. Tuts64, L. Uvarov36, S. Uvarov36, S. Uzunyan48, B. Vachon46, R. Van Kooten50, W. M. van Leeuwen30, N. Varelas47, E. W. Varnes41, I. Vasilyev35, M. Vaupel24, P. Verdier14, L. S. Vertogradov32, M. Verzocchi56, F. Villeneuve-Seguier39, J.-R. Vlimant15, E. Von Toerne54, M. Vreeswijk30, T. Vu Anh14, H. D. Wahl45, R. Walker39, N. Wallace41, Z.-M. Wang66, J. Warchol51, M. Warsinsky20, G. Watts74, M. Wayne51, M. Weber46, H. Weerts60, M. Wegner19, A. White71, V. White46, D. Whiteson42, D. Wicke24, D. A. Wijngaarden31, G. W. Wilson53, S. J. Wimpenny44, J. Wittlin57, T. Wlodek71, M. Wobisch46, J. Womersley46, D. R. Wood58, Z. Wu6, T. R. Wyatt40, Q. Xu59, N. Xuan51, R. Yamada46, T. Yasuda46, Y. A. Yatsunenko32, Y. Yen24, K. Yip67, S. W. Youn28, J. Yu71, A. Yurkewicz60, A. Zabi14, A. Zatserklyaniy48, M. Zdrazil66, C. Zeitnitz22, B. Zhang6, D. Zhang46, X. Zhang69, T. Zhao74, Z. Zhao59, H. Zheng51, B. Zhou59, Z. Zhou52, J. Zhu56, M. Zielinski65, D. Zieminska50, A. Zieminski50, R. Zitoun66, V. Zutshi48, E. G. Zverev34, and A. Zylberstejn16 (D0 Collaboration)
1Universidad de Buenos Aires, Buenos Aires, Argentina
2LAFEX, Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro, Brazil
3Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
4Instituto de Física Teórica, Universidade Estadual Paulista, São Paulo, Brazil
5University of Alberta, Edmonton, Alberta, Canada, and Simon Fraser University, Burnaby, British Columbia, Canada
6Institute of High Energy Physics, Beijing, People’s Republic of China
7Universidad de los Andes, Bogotá, Colombia
8Center for Particle Physics, Charles University, Prague, Czech Republic
9Czech Technical University, Prague, Czech Republic
10Institute of Physics, Academy of Sciences, Center for Particle Physics, Prague, Czech Republic
11Universidad San Francisco de Quito, Quito, Ecuador
12Laboratoire de Physique Subatomique et de Cosmologie, IN2P3-CNRS, Universite de Grenoble 1, Grenoble, France
13CPPM, IN2P3-CNRS, Université de la Méditerranée, Marseille, France
14Laboratoire de l’Accélérateur Linéaire, IN2P3-CNRS, Orsay, France
15LPNHE, IN2P3-CNRS, Universités Paris VI and VII, Paris, France
16DAPNIA/Service de Physique des Particules, CEA, Saclay, France
17IReS, IN2P3-CNRS, Université Louis Pasteur, Strasbourg, France, and Université de Haute Alsace, Mulhouse, France
18Institut de Physique Nucléaire de Lyon, IN2P3-CNRS, Université Claude Bernard, Villeurbanne, France
19III. Physikalisches Institut A, RWTH Aachen, Aachen, Germany
20Physikalisches Institut, Universität Bonn, Bonn, Germany
21Physikalisches Institut, Universität Freiburg, Freiburg, Germany
22Institut für Physik, Universität Mainz, Mainz, Germany
23Ludwig-Maximilians-Universität München, München, Germany
24Fachbereich Physik, University of Wuppertal, Wuppertal, Germany
25Panjab University, Chandigarh, India
26Tata Institute of Fundamental Research, Mumbai, India
27University College Dublin, Dublin, Ireland
28Korea Detector Laboratory, Korea University, Seoul, Korea
29CINVESTAV, Mexico City, Mexico
30FOM-Institute NIKHEF and University of Amsterdam/NIKHEF, Amsterdam, The Netherlands
31University of Nijmegen/NIKHEF, Nijmegen, The Netherlands
32Joint Institute for Nuclear Research, Dubna, Russia
33Institute for Theoretical and Experimental Physics, Moscow, Russia
34Moscow State University, Moscow, Russia
35Institute for High Energy Physics, Protvino, Russia
36Petersburg Nuclear Physics Institute, St. Petersburg, Russia
37Lund University, Lund, Sweden, Royal Institute of Technology and Stockholm University, Stockholm, Sweden, and Uppsala University, Uppsala, Sweden
38Lancaster University, Lancaster, United Kingdom
39Imperial College, London, United Kingdom
40University of Manchester, Manchester, United Kingdom
41University of Arizona, Tucson, Arizona 85721, USA
42Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720, USA
43California State University, Fresno, California 93740, USA
44University of California, Riverside, California 92521, USA
45Florida State University, Tallahassee, Florida 32306, USA
46Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
47University of Illinois at Chicago, Chicago, Illinois 60607, USA
48Northern Illinois University, DeKalb, Illinois 60115, USA
49Northwestern University, Evanston, Illinois 60208, USA
50Indiana University, Bloomington, Indiana 47405, USA
51University of Notre Dame, Notre Dame, Indiana 46556, USA
52Iowa State University, Ames, Iowa 50011, USA
53University of Kansas, Lawrence, Kansas 66045, USA
54Kansas State University, Manhattan, Kansas 66506, USA
55Louisiana Tech University, Ruston, Louisiana 71272, USA
56University of Maryland, College Park, Maryland 20742, USA
57Boston University, Boston, Massachusetts 02215, USA
58Northeastern University, Boston, Massachusetts 02115, USA
59University of Michigan, Ann Arbor, Michigan 48109, USA
60Michigan State University, East Lansing, Michigan 48824, USA
61University of Mississippi, University, Mississippi 38677, USA
62University of Nebraska, Lincoln, Nebraska 68588, USA
63Princeton University, Princeton, New Jersey 08544, USA
64Columbia University, New York, New York 10027, USA
65University of Rochester, Rochester, New York 14627, USA
66State University of New York, Stony Brook, New York 11794, USA
67Brookhaven National Laboratory, Upton, New York 11973, USA
68Langston University, Langston, Oklahoma 73050, USA
69University of Oklahoma, Norman, Oklahoma 73019, USA
70Brown University, Providence, Rhode Island 02912, USA
71University of Texas, Arlington, Texas 76019, USA
72Rice University, Houston, Texas 77005, USA
73University of Virginia, Charlottesville, Virginia 22901, USA
74University of Washington, Seattle, Washington 98195, USA
Received 5 May 2004; published 14 October 2004
We report the observation of the X(3872) in the J/ψπ+π- channel, with J/ψ decaying to μ+μ-, in pp̅ collisions at √s=1.96 TeV. Using approximately 230 pb-1 of data collected with the Run II D0 detector, we observe 522±100 X(3872) candidates. The mass difference between the X(3872) state and the J/ψ is measured to be 774.9±3.1(stat)±3.0(syst) MeV/c2. We have investigated the production and decay characteristics of the X(3872) and find them to be similar to those of the ψ(2S) state.
© 2004 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.162002
DOI:
10.1103/PhysRevLett.93.162002
PACS:
14.40.Gx, 13.25.Gv, 13.85.Ni, 14.40.Lb
*Visitor from University of Zurich, Zurich, Switzerland. †Visitor from Institute of Nuclear Physics, Krakow, Poland.
|
|
