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Search for the rare decay $K_S^0 \to \mu^+ \mu^-$


LHCb Collaboration; Anderson, J; Bernet, R; Büchler-Germann, A; Bursche, A; Chiapolini, N; De Cian, M; Elsasser, C; Müller, K; Salzmann, C; Serra, N; Steinkamp, O; Straumann, U; Tobin, M; Vollhardt, A; et al (2013). Search for the rare decay $K_S^0 \to \mu^+ \mu^-$. Journal of High Energy Physics, 2013:90.

Abstract

A search for the decay $K_S^0 \to \mu^+ \mu^-$ is performed, based on a data sample of 1.0 fb$^{−1}$ of $pp$ collisions at $\sqrt(s)=7TeV$ collected by the LHCb experiment at the Large Hadron Collider. The observed number of candidates is consistent with the background-only hypothesis, yielding an upper limit of $B(K_S^0 \to \mu^+ \mu^-) < 11(9) × 10^{−9}$ at 95 (90)% confidence level. This limit is a factor of thirty below the previous measurement.

Abstract

A search for the decay $K_S^0 \to \mu^+ \mu^-$ is performed, based on a data sample of 1.0 fb$^{−1}$ of $pp$ collisions at $\sqrt(s)=7TeV$ collected by the LHCb experiment at the Large Hadron Collider. The observed number of candidates is consistent with the background-only hypothesis, yielding an upper limit of $B(K_S^0 \to \mu^+ \mu^-) < 11(9) × 10^{−9}$ at 95 (90)% confidence level. This limit is a factor of thirty below the previous measurement.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2013
Deposited On:21 Mar 2013 09:32
Last Modified:05 Apr 2016 16:37
Publisher:Springer
ISSN:1029-8479
Free access at:Related URL. An embargo period may apply.
Publisher DOI:https://doi.org/10.1007/JHEP01(2013)090

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