Improved limit on the branching fraction of the rare decay K0 s→μ+ μ-

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Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G et al (show 90 more authors) , Alvarez Cartelle, P, Alves, AA, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreotti, M, Andrews, JE, Appleby, RB, Archilli, F, d’Argent, P, Arnau Romeu, J, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Babuschkin, I, Bachmann, S, Back, JJ, Badalov, A, Baesso, C, Baker, S, Balagura, V, Baldini, W, Baranov, A, Barlow, RJ, Barschel, C, Barsuk, S, Barter, W, Baryshnikov, F, Baszczyk, M, Batozskaya, V, Battista, V, Bay, A, Beaucourt, L, Beddow, J, Bedeschi, F, Bediaga, I, Beiter, A, Bel, LJ, Bellee, V, Belloli, N, Belous, K, Belyaev, I, Ben-Haim, E, Bencivenni, G, Benson, S, Beranek, S, Berezhnoy, A, Bernet, R, Bertolin, A, Betancourt, C, Betti, F, Bettler, MO, van Beuzekom, M, Bezshyiko, I, Bifani, S, Billoir, P, Birnkraut, A, Bitadze, A, Bizzeti, A, Blake, T, Blanc, F, Blouw, J, Blusk, S, Bocci, V, Boettcher, T, Bondar, A, Bondar, N, Bonivento, W, Bordyuzhin, I, Borgheresi, A, Borghi, S, Borisyak, M, Borsato, M, Bossu, F, Boubdir, M, Bowcock, TJV ORCID: 0000-0002-3505-6915, Bowen, E, Bozzi, C, Braun, S, Britton, T, Brodzicka, J, Buchanan, E, Burr, C, Bursche, A and Buytaert, J (2017) Improved limit on the branching fraction of the rare decay K0 s→μ+ μ- European Physical Journal C, 77 (10). 678-. ISSN 1434-6044, 1434-6052

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Abstract

A search for the decay KS0→μ+μ- is performed, based on a data sample of proton-proton collisions corresponding to an integrated luminosity of 3fb-1, collected by the LHCb experiment at centre-of-mass energies of 7 and 8TeV. The observed yield is consistent with the background-only hypothesis, yielding a limit on the branching fraction of B(KS0→μ+μ-)<0.8(1.0)×10-9 at 90%(95%) confidence level. This result improves the previous upper limit on the branching fraction by an order of magnitude.

Item Type:	Article
Additional Information:	All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2017-009.html
Uncontrolled Keywords:	LHCb Collaboration
Depositing User:	Symplectic Admin
Date Deposited:	12 Jan 2018 12:27
Last Modified:	22 Jan 2026 07:44
DOI:	10.1140/epjc/s10052-017-5230-x
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3015946
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