A search for the very rare B∗0→μ+μ- and Bs∗0→μ+μ- decays is conducted by analysing the Bc+→π+μ+μ- 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 μ+μ- and π+μ+μ- 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/ψπ+ decays, (Formula presented.)

Zunica, G., Zuliani, D., Zou, Q., Zhuo, J., Zhukov, V., Zhu, X., et al. (2025). Search for B(s)∗0→μ+μ- in Bc+→π+μ+μ- decays. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 85(1) [10.1140/epjc/s10052-024-13573-0].

Search for B(s)∗0→μ+μ- in Bc+→π+μ+μ- decays

Salomoni M.;Pizzichemi M.;Minotti A.;Martinelli M.;Martinazzoli L.;Malentacca L.;Kirsebom V. S.;Garcia Pardinas J.;Fazzini D.;Carniti P.;Capelli S.;Calvi M.;Borsato M.;Anelli A.;
2025

Abstract

A search for the very rare B∗0→μ+μ- and Bs∗0→μ+μ- decays is conducted by analysing the Bc+→π+μ+μ- 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 μ+μ- and π+μ+μ- 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/ψπ+ decays, (Formula presented.)
Articolo in rivista - Articolo scientifico
Boron compounds; Empirical mode decomposition
English
13-gen-2025
2025
85
1
20
none
Zunica, G., Zuliani, D., Zou, Q., Zhuo, J., Zhukov, V., Zhu, X., et al. (2025). Search for B(s)∗0→μ+μ- in Bc+→π+μ+μ- decays. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 85(1) [10.1140/epjc/s10052-024-13573-0].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/579141
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