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Título: | Measurement of the B-0 -> K*(0) e(+) e(-) branching fraction at low dilepton mass |
Autor: | LHCb Collaboration; Aaij, R.; Oyanguren, Arantza CSIC ORCID; Ruiz Valls, Pablo CSIC | Palabras clave: | Rare decay Hadron-Hadron Scattering Branching fraction B physics Flavour Changing Neutral Currents |
Fecha de publicación: | 1-may-2013 | Editor: | Springer Nature | Citación: | Journal of High Energy Physics 05 (5): 159 - 18 (2013) | Resumen: | The branching fraction of the rare decay B-0 -> K*(0) e(+) e(-) in the dilepton mass region from 30 to 1000 MeV/c(2) has been measured by the LHCb experiment, using pp collision data, corresponding to an integrated luminosity of 1.0 fb(-1), at a centre-of-mass energy of 7 TeV. The decay mode B-0 -> J/psi (e(+) e(-)) K*(0) is utilized as a normalization channel. The branching fraction B(B-0 -> K*(0) e(+) e(-)) is measured to be B(B-0 -> K*(0) e(+) e(-))(30-1000 MeV/c2) = (3.1(-0.8)(-0.3)(+0.9)(+0.2) +/- 0.2) x 10(-7) where the fi rst error is statistical, the second is systematic, and the third comes from the uncertainties on the B-0 -> J/K*(0) and J/psi -> e(+) e(-) branching fractions. | Versión del editor: | http://dx.doi.org/10.1007/JHEP05(2013)159 | URI: | http://hdl.handle.net/10261/125975 | DOI: | 10.1007/JHEP05(2013)159 | ISSN: | 1029-8479 | E-ISSN: | 1029-8479 |
Aparece en las colecciones: | (IFIC) Artículos |
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