# Search for decays of neutral beauty mesons into four muons

Abstract : A search for the non-resonant decays $B^0_s \rightarrow \mu^{+}\mu^{-}\mu^{+}\mu^{-}$ and $B^0 \rightarrow \mu^{+}\mu^{-}\mu^{+}\mu^{-}$ is presented. The measurement is performed using the full Run 1 data set collected in proton-proton collisions by the LHCb experiment at the LHC. The data correspond to integrated luminosities of $1$ and $2~\mathrm{fb}^{-1}$ collected at centre-of-mass energies of $7$ and $8~\mathrm{TeV}$, respectively. No signal is observed and upper limits on the branching fractions of the non-resonant decays at $95\%$ confidence level are determined to be \begin{align*} \mathcal{B}(B^0_s \rightarrow \mu^{+}\mu^{-}\mu^{+}\mu^{-}) & < 2.5 \times 10^{-9} \mathcal{B}(B^0 \rightarrow \mu^{+}\mu^{-}\mu^{+}\mu^{-}) & < 6.9 \times 10^{-10}. \end{align*}
Type de document :
Article dans une revue
Journal of High Energy Physics, Springer Verlag (Germany), 2017, 03, pp.001. 〈10.1007/JHEP03(2017)001〉

http://hal.in2p3.fr/in2p3-01401975
Contributeur : Danielle Cristofol <>
Soumis le : jeudi 24 novembre 2016 - 09:51:09
Dernière modification le : jeudi 18 janvier 2018 - 02:03:50

### Citation

R. Aaij, B. Adeva, M. Adinolfi, Z. Ajaltouni, S. Akar, et al.. Search for decays of neutral beauty mesons into four muons. Journal of High Energy Physics, Springer Verlag (Germany), 2017, 03, pp.001. 〈10.1007/JHEP03(2017)001〉. 〈in2p3-01401975〉

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