Measurement of the B-0 -> K*(0) e(+) e(-) branching fraction at low dilepton mass
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Measurement of the B-0 -> K*(0) e(+) e(-) branching fraction at low dilepton mass

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Measurement of the B-0 -> K*(0) e(+) e(-) branching fraction at low dilepton mass

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LHCb Collaboration; Oyanguren Campos, Arantza Perfil; Ruiz Valls, Pablo
Aquest document és un/a article, creat/da en: 2013

Este documento está disponible también en : http://dx.doi.org/10.1007/JHEP05(2013)159
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.

    LHCb Collaboration Oyanguren Campos, Arantza Ruiz Valls, Pablo 2013 Measurement of the B-0 -> K*(0) e(+) e(-) branching fraction at low dilepton mass Journal of High Energy Physics 05 5 159-1 159-18
http://dx.doi.org/10.1007/JHEP05(2013)159
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