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Search for the lepton-flavour violating decays B0 → K*0μ±e∓ and B0s→ ϕμ±e∓

A search for the lepton-flavour violating decays B0 → K*0μ±e∓ and→ 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 x...

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Main Authors: Aaij, Roel (Author) , Archilli, Flavio (Author) , Bachmann, Sebastian (Author) , Berninghoff, Daniel (Author) , Borsato, Martino (Author) , Caspary, Rowina (Author) , Frau, Giulia (Author) , Gerick, David (Author) , Grabowski, Jascha (Author) , Günther, Paul André (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Hu, Jiangqiao (Author) , Kopecná, Renata (Author) , Kubat, Jakub (Author) , Leverington, Blake (Author) , Li, Peilian (Author) , Malygina, Hanna (Author) , Marks, Jörg (Author) , Skuza, Raphael (Author) , Unverzagt, Daniel Joachim (Author) , Uwer, Ulrich (Author) , Waldi, Roland (Author) , Wang, Chishuai (Author) , Witola, Lukas (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 14 June 2023
In: Journal of high energy physics
Year: 2023, Issue: 6, Pages: 1-24
ISSN:1029-8479
DOI:10.1007/JHEP06(2023)073
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1007/JHEP06(2023)073
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Author Notes:the LHCb collaboration
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Summary:A search for the lepton-flavour violating decays B0 → K*0μ±e∓ and→ 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 x 10-9(6.9 x 10-9), B(B0 → K*0μ-e+) < 6,8 x 10-9(7.9 x 10-9), B(B0 → K*0μ ∓e∓) < 10.1 x 10-9(11.7 x 10-9), B(Bs0 → ϕμ±e∓ ) < 16.0 x 10-9(19.8 x 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 → ϕμ±e∓ the first being set. In addition, limits are reported for scalar and left-handed lepton-flavour violating New Physics scenarios.
Item Description:The LHCb collaboration: R. Aaij, F. Archilli, S. Bachmann, R. Caspary, G. Frau, D. Gerick, J.P. Grabowski, P.A. Günther, X. Han, S. Hansmann-Menzemer, J. Hu, R. Kopecná, J. Kubat, B. Leverington, P. Li, H. Malygina, J. Marks, R. Skuza, D.J. Unverzagt, U. Uwer, R. Waldi, C. Wang, L. Witola, A. Zhelezov [und 984 weitere]
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Im Titel ist bei B0 die Null hochgestellt, bei B0s ist die Null hochgestellt und und das s tiefgestellt
Im Titel ist bei K*0 das Sternchen und die Null hochgestellt, bei μ und e ist + und - hochgestellt
Im Titel sind "My" und "Phi" als griechischer Buchstabe dargestellt
Physical Description:Online Resource
ISSN:1029-8479
DOI:10.1007/JHEP06(2023)073

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