The isospin asymmetries of B → Kμ + μ - and B → K * μ + μ - decays and the partial branching fractions of the B 0 → K 0 μ + μ -, B + → K + μ + μ - and B + → K *+ μ + μ - decays are measured as functions of the dimuon mass squared, q 2. The data used correspond to an integrated luminosity of 3 fb-1 from proton-proton collisions collected with the LHCb detector at centre-of-mass energies of 7 TeV and 8 TeV in 2011 and 2012, respectively. The isospin asymmetries are both consistent with the Standard Model expectations. The three measured branching fractions favour lower values than their respective theoretical predictions, however they are all individually consistent with the Standard Model. [Figure not available: see fulltext.] © 2014 The Author(s).

Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Albrecht, J., et al. (2014). Differential branching fractions and isospin asymmetries of B → K (*) μ + μ - decays. JOURNAL OF HIGH ENERGY PHYSICS, 2014(6) [10.1007/JHEP06(2014)133].

Differential branching fractions and isospin asymmetries of B → K (*) μ + μ - decays

Borsato, M;CALVI, MARTA;CASSINA, LORENZO;GOTTI, CLAUDIO;KHANJI, BASEM;KUCHARCZYK, MARCIN;Martinelli, M;
2014

Abstract

The isospin asymmetries of B → Kμ + μ - and B → K * μ + μ - decays and the partial branching fractions of the B 0 → K 0 μ + μ -, B + → K + μ + μ - and B + → K *+ μ + μ - decays are measured as functions of the dimuon mass squared, q 2. The data used correspond to an integrated luminosity of 3 fb-1 from proton-proton collisions collected with the LHCb detector at centre-of-mass energies of 7 TeV and 8 TeV in 2011 and 2012, respectively. The isospin asymmetries are both consistent with the Standard Model expectations. The three measured branching fractions favour lower values than their respective theoretical predictions, however they are all individually consistent with the Standard Model. [Figure not available: see fulltext.] © 2014 The Author(s).
Articolo in rivista - Articolo scientifico
B physics; Branching fraction; Flavour Changing Neutral Currents; Hadron-Hadron Scattering; Rare decay; Nuclear and High Energy Physics
English
2014
2014
6
133
none
Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Albrecht, J., et al. (2014). Differential branching fractions and isospin asymmetries of B → K (*) μ + μ - decays. JOURNAL OF HIGH ENERGY PHYSICS, 2014(6) [10.1007/JHEP06(2014)133].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/61341
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