Resumen
A measurement of the ratio of the branching fractions of the B+→K+μ+μ- and B+→K+e+e- decays is presented using proton-proton collision data, corresponding to an integrated luminosity of 3.0fb-1, recorded with the LHCb experiment at center-of-mass energies of 7 and 8 TeV. The value of the ratio of branching fractions for the dilepton invariant mass squared range 1<q2<6GeV2/c4 is measured to be 0.745-0.074+0.090(stat)±0.036(syst). This value is the most precise measurement of the ratio of branching fractions to date and is compatible with the standard model prediction within 2.6 standard deviations.
Idioma original | English |
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Número de artículo | 151601 |
Publicación | Physical Review Letters |
Volumen | 113 |
N.º | 15 |
DOI | |
Estado | Published - 6 oct 2014 |
Publicado de forma externa | Sí |
All Science Journal Classification (ASJC) codes
- Física y Astronomía General