Artículos de revistas
Observation and properties of the X(3872) decaying to J/ψπ+π- in pp̄ collisions at √s = 1.96 TeV
Fecha
2004-10-15Registro en:
Physical Review Letters, v. 93, n. 16, 2004.
0031-9007
10.1103/PhysRevLett.93.162002
2-s2.0-80051545276
Autor
Universidad de Buenos Aires
Centro Brasileiro de Pesquisas Físicas
Universidade do Estado do Rio de Janeiro (UERJ)
Universidade Estadual Paulista (UNESP)
University of Alberta
Simon Fraser University
Institute of High Energy Physics
Universidad de los Andes
Charles University
Czech Technical University
Center for Particle Physics
Universidad San Francisco de Quito
IN2P3-CNRS
Université de la Méditerranée
Universités Paris VI and VII
CEA Saclay
Université Louis Pasteur
Université de Haute Alsace
Université Claude Bernard
RWTH Aachen
Universität Bonn
Universität Freiburg
Universität Mainz
Ludwig-Maximilians-Universität München
University of Wuppertal
Panjab University
Tata Institute of Fundamental Research
University College Dublin
Korea University
CINVESTAV
University of Amsterdam/NIKHEF
University of Nijmegen/NIKHEF
Joint Institute for Nuclear Research
Institute for Theoretical and Experimental Physics
Moscow State University
Institute for High Energy Physics
Petersburg Nuclear Physics Institute
Lund University
Uppsala University
Stockholm University
Lancaster University
Imperial College
University of Manchester
University of Arizona
University of California
California State University
Florida State University
Fermi National Accelerator Laboratory
University of Illinois at Chicago
Northern Illinois University
Northwestern University
Indiana University
University of Notre Dame
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University of Kansas
Kansas State University
Louisiana Tech University
University of Maryland
Boston University
Northeastern University
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Michigan State University
University
University of Nebraska
Princeton University
Columbia University
University of Rochester
State University of New York
Brookhaven National Laboratory
Langston University
University of Oklahoma
Brown University
University of Texas
Rice University
University of Virginia
University of Washington
University of Zurich
Institute of Nuclear Physics
Institución
Resumen
The discovery of a new particle, X(3872) by the Belle collaboration in the decay mode B±→ XK± (X→ J/ψπ+π - was discussed. It was found that the mass of the X(3872) was measured to be 3872.0 ± 0.6(stat) ± 0.5 (syst) MeV/C2. The X(3872) particle were observed in approximately 230 pb-1 of data with a significance of 5.2 standard deviations. The results show that there was no significant differences between the X(3872) and the cc̄ state ψ (2S).