A search for the decay K0S → μ+ μ− is performed, based on a data sample of proton-proton collisions corresponding to an integrated luminosity of 3 fb^−1, collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The observed yield is consistent with the background-only hypothesis, yielding a limit on the branching fraction of B(K0S → 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), 1-12 [10.1140/epjc/s10052-017-5230-x].

Improved Limit on the Branching Fraction of the Rare Decay K0S → μ+ μ−

BETTI, FEDERICO;Capriotti, L.;CARBONE, ANGELO;FERRARI, FABIO;GALLI, DOMENICO;MUSSINI, MANUEL;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZUCCHELLI, STEFANO
2017

Abstract

A search for the decay K0S → μ+ μ− is performed, based on a data sample of proton-proton collisions corresponding to an integrated luminosity of 3 fb^−1, collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The observed yield is consistent with the background-only hypothesis, yielding a limit on the branching fraction of B(K0S → 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.
2017
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), 1-12 [10.1140/epjc/s10052-017-5230-x].
Aaij, R.; Adeva, B.; Adinolfi, M.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Alvarez Cartelle, P.; Alv...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/610012
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