A search for the lepton-flavour violating decays B 0 → K*0 μ± e∓ and Bs0 → ϕμ± e∓ is presented, using proton-proton collision data collected by the LHCb detector at the LHC, corresponding to an integrated luminosity of 9 fb −1. No significant signals are observed and upper limits of B(B0→K∗0μ+e−)<5.7×10−9(6.9×10−9), B(B0→K∗0μ−e+)<6.8×10−9(7.9×10−9), B(B0→K∗0μ±e∓)<10.1×10−9(11.7×10−9), B(Bs0→ϕμ±e∓)<16.0×10−9(19.8×10−9) are set at 90% (95%) confidence level. These results constitute the world’s most stringent limits to date, with the limit on the decay Bs0 → ϕμ± e∓ the first being set. In addition, limits are reported for scalar and left-handed lepton-flavour violating New Physics scenarios.

Aaij, R., Abdelmotteleb, A., Abellan Beteta, C., Abudinen, F., Ackernley, T., Adeva, B., et al. (2023). Search for the lepton-flavour violating decays B 0 → K *0 μ ± e ∓ and Bs0 → ϕμ ± e ∓. JOURNAL OF HIGH ENERGY PHYSICS, 2023(6) [10.1007/JHEP06(2023)073].

Search for the lepton-flavour violating decays B 0 → K *0 μ ± e ∓ and Bs0 → ϕμ ± e ∓

Borsato M.;Calvi M.;Capelli S.;Carniti P.;Fazzini D.;Garcia Pardinas J.;Gotti C.;Kirsebom V. S.;Martinazzoli L.;Martinelli M.;Meloni S.;Minotti A.;Petruzzo M.;Pizzichemi M.;Salomoni M.;Shields E. B.;
2023

Abstract

A search for the lepton-flavour violating decays B 0 → K*0 μ± e∓ and Bs0 → ϕμ± e∓ is presented, using proton-proton collision data collected by the LHCb detector at the LHC, corresponding to an integrated luminosity of 9 fb −1. No significant signals are observed and upper limits of B(B0→K∗0μ+e−)<5.7×10−9(6.9×10−9), B(B0→K∗0μ−e+)<6.8×10−9(7.9×10−9), B(B0→K∗0μ±e∓)<10.1×10−9(11.7×10−9), B(Bs0→ϕμ±e∓)<16.0×10−9(19.8×10−9) are set at 90% (95%) confidence level. These results constitute the world’s most stringent limits to date, with the limit on the decay Bs0 → ϕμ± e∓ the first being set. In addition, limits are reported for scalar and left-handed lepton-flavour violating New Physics scenarios.
Articolo in rivista - Articolo scientifico
B Physics; Flavour Physics; Hadron-Hadron Scattering; Rare Decay;
English
14-giu-2023
2023
2023
6
73
none
Aaij, R., Abdelmotteleb, A., Abellan Beteta, C., Abudinen, F., Ackernley, T., Adeva, B., et al. (2023). Search for the lepton-flavour violating decays B 0 → K *0 μ ± e ∓ and Bs0 → ϕμ ± e ∓. JOURNAL OF HIGH ENERGY PHYSICS, 2023(6) [10.1007/JHEP06(2023)073].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/454540
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