A search for the decay K-s(0) -> mu(+)mu(-) is performed, based on a data sample of 1.0fb(-1) of pp collisions at root s = 7 TeV 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) -> mu(+)mu(-)) < 11(9) x 10(-9) at 95 (90)% confidence level. This limit is a factor of thirty below the previous measurement.

### Search for the rare decay $K_{\mathrm{S}}^0\to {\mu^{+}}{\mu^{-}}$

#### Abstract

A search for the decay K-s(0) -> mu(+)mu(-) is performed, based on a data sample of 1.0fb(-1) of pp collisions at root s = 7 TeV 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) -> mu(+)mu(-)) < 11(9) x 10(-9) at 95 (90)% confidence level. This limit is a factor of thirty below the previous measurement.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11576/2591430
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