Search for the lepton-flavour violating decays B<sub>(s)</sub><SUP>0</SUP> → e<SUP>±</SUP> μ<SUP>∓</SUP>



Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Alfonso Albero, A, Ali, S
et al (show 793 more authors) (2018) Search for the lepton-flavour violating decays B<sub>(s)</sub><SUP>0</SUP> → e<SUP>±</SUP> μ<SUP>∓</SUP>. JOURNAL OF HIGH ENERGY PHYSICS, 1803 (3). 078-.

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Abstract

A search for the lepton-flavour violating decays $B^0_s \rightarrow e^\pm \mu^\mp$ and $B^0 \rightarrow e^\pm \mu^\mp$ is performed based on a sample of proton-proton collision data corresponding to an integrated luminosity of 3 fb$^{-1}$, collected with the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The observed yields are consistent with the background-only hypothesis. Upper limits on the branching fractions are determined to be $\mathcal{B}(B^0_s \rightarrow e^\pm \mu^\mp) < 5.4\,(6.3) \times 10^{-9}$ and $\mathcal{B}(B^0 \rightarrow e^\pm \mu^\mp) < 1.0\,(1.3) \times 10^{-9}$ at $90\%\,(95\%)$ confidence level, which are the strongest limits on these decays to date.

Item Type: Article
Additional Information: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2017-031.html
Uncontrolled Keywords: B physics, Branching fraction, Flavor physics, Hadron-Hadron scattering (experiments), Rare decay
Depositing User: Symplectic Admin
Date Deposited: 08 May 2018 06:31
Last Modified: 14 Mar 2024 23:32
DOI: 10.1007/JHEP03(2018)078
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3020970