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.

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

ANDREOTTI, Mirco;BALDINI, Wander;BOZZI, Concezio;CALABRESE, Roberto;CORVO, Marco;FIORE, Marco;FIORINI, Massimiliano;LUPPI, Eleonora;MANZALI, Matteo;SAVRIE', Mauro;TELLARINI, Giulia;TOMASSETTI, Luca;
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.
2014
R., Aaij; B., Adeva; M., Adinolfi; A., Affolder; Z., Ajaltouni; J., Albrecht; F., Alessio; M., Alexander; S., Ali; G., Alkhazov; P., Alvarez Cartelle;...espandi
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2085414
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 396
  • ???jsp.display-item.citation.isi??? 243
social impact