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Title: Differential branching fractions and isospin asymmetries of B -> K ((*)) mu (+) mu (-) decays
Author: Camboni, Alessandro
Garrido Beltrán, Lluís
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Marin Benito, Carla
Picatoste Olloqui, E.
Rives Molina, V.
Ruiz, Hugo
LHCb Collaboration
Keywords: Hadrons
Gran Col·lisionador d'Hadrons
Física de partícules
Large Hadron Collider (France and Switzerland)
Particle physics
Issue Date: Jun-2014
Publisher: Springer Verlag
Abstract: The isospin asymmetries of B → Kµ+µ − and B → K∗µ +µ − decays and the partial branching fractions of the B0 → K0µ +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.
Note: Reproducció del document publicat a:
It is part of: Journal of High Energy Physics, 2014, vol. 6, num. 133, p. 1-25
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ISSN: 1126-6708
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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