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Angular analysis and branching fraction measurement of the decay B0 - K*0µ+µ-

Abstract: ABSTRACT: The angular distributions and the differential branching fraction of the decay B0?K?(892)0?+?? are studied using a data sample corresponding to an integrated luminosity of 5.2fb?1 collected with the CMS detector at the LHC in pp collisions at s=7TeV. From more than 400 signal decays, the forward?backward asymmetry of the muons, the K?(892)0 longitudinal polarization fraction, and the differential branching fraction are determined as a function of the square of the dimuon invariant mass. The measurements are in good agreement with standard model predictions.

Authorship: Chatrchyan S., Khachatryan V., Sirunyan A.M., Tumasyan A., Adam W., Bergauer T., Dragicevic M., Erö J., Fabjan C., Friedl M., Frühwirth R., Ghete V.M., Hörmann N., Hrubec J., Jeitler M., Kiesenhofer W., Knünz V., Krammer M., Krätschmer I., Liko D., Mikulec I., Rabady D., Rahbaran B., Rohringer C., Rohringer H., Schöfbeck R., Strauss J., Taurok A., Treberer-Treberspurg W., Waltenberger W., Wulz C.E., Mossolov V., Shumeiko N., Suare

Fuente: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2013, 727(1-3), 77-100

Publisher: Elsevier

Publication date: 25/11/2013

No. of pages: 24

Publication type: Article

DOI: 10.1016/j.physletb.2013.10.017

ISSN: 0370-2693,1873-2445

Publication Url: https://doi.org/10.1016/j.physletb.2013.10.017

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