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    Measurement of the Λb0 Lifetime in Λb0→Λc+π- Decays in pp̅ Collisions at √s=1.96  TeV

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    Measurement of the ... (242.6Kb)
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    URI: http://hdl.handle.net/10902/2002
    DOI: 10.1103/PhysRevLett.104.102002
    ISSN: 0031-9007
    ISSN: 1079-7114
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    Author
    Aaltonen, Timo Antero; Álvarez González, Bárbara; Amerio, Silvia; Amidei, Dante; Anastassov, Anton; Annovi, Alberto; Antos, Jaroslav; Apollinari, Giorgio; Apresyan, Artur; Arisawa, Tetsuo; 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; Artikov, A.; [et al.]
    Date
    2010-03-11
    Derechos
    © 2010 The American Physical Society
    Publicado en
    Physical Review Letters, vol. 104, iss. 10, art. num. 102002 (2010)
    Publisher
    American Physical Society
    Enlace a la publicación
    http://dx.doi.org/10.1103/PhysRevLett.104.102002
    Abstract:
    We report a measurement of the lifetime of the Λb0 baryon in decays to the Λc+π- final state in a sample corresponding to 1.1  fb-1 collected in pp̅ collisions at √s=1.96  TeV by the CDF II detector at the Tevatron collider. Using a sample of about 3000 fully reconstructed Λb0 events we measure τ(Λb0)=1.401±0.046(stat)±0.035(syst)  ps (corresponding to cτ(Λb0)=420.1±13.7(stat)±10.6(syst)  μm, where c is the speed of light). The ratio of this result and the world average B0 lifetime yields τ(Λb0)/τ(B0)=0.918±0.038 (stat) and (syst), in good agreement with recent theoretical predictions.
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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