Improved limit on the branching fraction of the rare decay K S 0 → μ + μ

A search for the decay is performed, based on a data sample of proton-proton collisions corresponding to an integrated luminosity of , collected by the LHCb experiment at centre-of-mass energies of 7 and 8 . The observed yield is consistent with the background-only hypothesis, yielding a limit on th...

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Bibliographic Details
Published in:The European physical journal. C, Particles and fields Particles and fields, 2017, Vol.77 (10), p.678-12
Main Authors: Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G, Alvarez Cartelle, P, Alves, Jr, A A, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreotti, M, Andrews, J E, Appleby, R B, Archilli, F, d'Argent, P, Arnau Romeu, J, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Babuschkin, I, Bachmann, S, Back, J J, Badalov, A, Baesso, C, Baker, S, Balagura, V, Baldini, W, Baranov, A, Barlow, R J, 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, L J, 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, M-O, van Beuzekom, M, Bezshyiko, Ia, 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, T J V, Bowen, E, Bozzi, C, Braun, S, Britton, T, Brodzicka, J, Buchanan, E, Burr, C, Bursche, A, Buytaert, J
Format: Article
Language:English
Subjects:
Confidence intervals
Decay
Large Hadron Collider
Luminosity
Particle collisions
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Summary:A search for the decay is performed, based on a data sample of proton-proton collisions corresponding to an integrated luminosity of , collected by the LHCb experiment at centre-of-mass energies of 7 and 8 . The observed yield is consistent with the background-only hypothesis, yielding a limit on the branching fraction of at confidence level. This result improves the previous upper limit on the branching fraction by an order of magnitude.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-017-5230-x