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    Evidence for a Narrow Near-Threshold Structure in the J/ψϕ Mass Spectrum in B+→J/ψϕK+ Decays

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    Evidence for a Narrow ... (356.6Kb)
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    URI: http://hdl.handle.net/10902/2003
    DOI: 10.1103/PhysRevLett.102.242002
    ISSN: 0031-9007
    ISSN: 1079-7114
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    Author
    Aaltonen, Timo Antero; Akimoto, Takashi; Álvarez González, Bárbara; Amerio, Silvia; Amidei, Dante; Anastassov, Anton; Annovi, Alberto; Antos, Jaroslav; Apollinari, Giorgio; Apresyan, Artur; Casal Laraña, Bruno; Cuevas Maestro, Francisco Javier; Gómez Gramuglio, Gervasio; Rodrigo Anoro, TeresaAutoridad Unican; Ruiz Jimeno, AlbertoAutoridad Unican; Scodellaro, Luca; Vila Alvarez, Ivan; Vilar Cortabitarte, RocíoAutoridad Unican; Arisawa, Tetsuo; [et al.]
    Date
    2009-06-15
    Derechos
    © 2009 The American Physical Society
    Publicado en
    Physical Review Letters, vol. 102, iss. 24, art. num. 242002 (2009)
    Publisher
    American Physical Society
    Enlace a la publicación
    http://dx.doi.org/10.1103/PhysRevLett.102.242002
    Abstract:
    Evidence is reported for a narrow structure near the J/ψϕ threshold in exclusive B+→J/ψϕK+ decays produced in p̅ p collisions at √s=1.96  TeV. A signal of 14±5 events, with statistical significance in excess of 3.8 standard deviations, is observed in a data sample corresponding to an integrated luminosity of 2.7  fb-1, collected by the CDF II detector. The mass and natural width of the structure are measured to be 4143.0±2.9(stat)±1.2(syst)  MeV/c2 and 11.7-5.0+8.3(stat)±3.7(syst)  MeV/c2.
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    • D15 Artículos [349]

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    UNIVERSIDAD DE CANTABRIA

    Repositorio realizado por la Biblioteca Universitaria utilizando DSpace software
    Contact Us | Send Feedback
    Metadatos sujetos a:licencia de Creative Commons Reconocimiento 3.0 España