A search for the very rare B*0->mu+mu- and Bs*0→mu+mu- decays is conducted by analysing the Bc+->pi+mu+mu- process. The analysis uses proton-proton collision data collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9\,fb-1. The signal signatures correspond to simultaneous peaks in the mu+mu- and pi+mu+mu- invariant masses. No evidence for an excess of events over background is observed for either signal decay mode. Upper limits at the 90% confidence level are set on the branching fractions relative to that for Bc+->J/Psipi+ decays, (Formula presented.)
Search for B(s)*0->mu+mu- in Bc+->pi+mu+mu- decays
Riccardi D.Membro del Collaboration Group
;Passaro D.Membro del Collaboration Group
;Morello M. J.Membro del Collaboration Group
;Kleijne N.Membro del Collaboration Group
;
2025
Abstract
A search for the very rare B*0->mu+mu- and Bs*0→mu+mu- decays is conducted by analysing the Bc+->pi+mu+mu- process. The analysis uses proton-proton collision data collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9\,fb-1. The signal signatures correspond to simultaneous peaks in the mu+mu- and pi+mu+mu- invariant masses. No evidence for an excess of events over background is observed for either signal decay mode. Upper limits at the 90% confidence level are set on the branching fractions relative to that for Bc+->J/Psipi+ decays, (Formula presented.)File in questo prodotto:
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