# Search for the rare decay KS -> mu+ mu-

LHCb Collaboration; et al; Bernet, R; Müller, K; Steinkamp, O; Straumann, U; Vollhardt, A (2013). Search for the rare decay KS -> mu+ mu-. Journal of High Energy Physics, 2013:90.

## Abstract

A search for the decay TeX is performed, based on a data sample of 1.0 fb−1 of pp collisions at TeX 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 TeX < 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 TeX is performed, based on a data sample of 1.0 fb−1 of pp collisions at TeX 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 TeX < 11(9) × 10−9 at 95 (90)% confidence level. This limit is a factor of thirty below the previous measurement.

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