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.

Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Improved limit on the branching fraction of the rare decay K0s→μ+ μ-. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 77(10) [10.1140/epjc/s10052-017-5230-x].

Improved limit on the branching fraction of the rare decay K0s→μ+ μ-

Belloli, N.;Borgheresi, A.;Borsato, M.;Calvi, M.;Carniti, P.;Cassina, L.;Fazzini, D.;Gotti, C.
;
Grillo, L.;Martinelli, M.;Matteuzzi, C.;Petruzzo, M.;
2017

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.
Articolo in rivista - Articolo scientifico
Search; rare
English
2017
77
10
678
open
Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Improved limit on the branching fraction of the rare decay K0s→μ+ μ-. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 77(10) [10.1140/epjc/s10052-017-5230-x].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/181672
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