Measurements of the branching fraction ratio B(phi->mu+mu-)/B(phi->e+e-) with Ds+->pi+phi and D+-> pi+phi decays, denoted Rphipis and Rphiphid, are presented. The analysis is performed using a dataset corresponding to an integrated luminosity of 5.4 fb-1 of pp collision data collected with the LHCb experiment. The branching fractions are normalised with respect to the B+ -> K+J/Psi(->e+e-) and B+ ->K+J/Phi(→ mu+mu-) decay modes. The combination of the results yields (Formula presented.) The result is compatible with previous measurements of the phi -> ell+ell- branching fractions and predictions based on the Standard Model.

Measurements of the branching fraction ratio B(phi->mu+mu-)/B(phi->e+e-) with charm meson decays

Bassi G.
Membro del Collaboration Group
;
Kleijne N.
Membro del Collaboration Group
;
Morello M. J.
Membro del Collaboration Group
;
Passaro D.
Membro del Collaboration Group
;
Pica L.
Membro del Collaboration Group
;
Ribatti R.
Membro del Collaboration Group
;
Riccardi D.
Membro del Collaboration Group
;
2024

Abstract

Measurements of the branching fraction ratio B(phi->mu+mu-)/B(phi->e+e-) with Ds+->pi+phi and D+-> pi+phi decays, denoted Rphipis and Rphiphid, are presented. The analysis is performed using a dataset corresponding to an integrated luminosity of 5.4 fb-1 of pp collision data collected with the LHCb experiment. The branching fractions are normalised with respect to the B+ -> K+J/Psi(->e+e-) and B+ ->K+J/Phi(→ mu+mu-) decay modes. The combination of the results yields (Formula presented.) The result is compatible with previous measurements of the phi -> ell+ell- branching fractions and predictions based on the Standard Model.
2024
Settore FIS/01 - Fisica Sperimentale
Settore PHYS-01/A - Fisica sperimentale delle interazioni fondamentali e applicazioni
B Physics; Branching fraction; Charm Physics; Hadron-Hadron Scattering
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11384/159103
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