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arXiv · 1611.06717

Evidence for the rare decay $\Sigma^+ \to p \mu^+ \mu^-$ at LHCb

Francesco Dettori
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Abstract

A search for the rare decay $\Sigma^+ \to p \mu^+ \mu^-$ is performed using $pp$ collision data recorded by the LHCb experiment at centre-of-mass energies $\sqrt{s} = 7$ and $8$ TeV, corresponding to an integrated luminosity of $3 fb^{-1}$. An excess of events is observed with respect to the background expectations with a signal significance of 4.0 standard deviations. No significant structure is observed in the dimuon invariant mass distribution.

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Francesco Dettori. 2016-11-21. Evidence for the rare decay $\Sigma^+ \to p \mu^+ \mu^-$ at LHCb. https://arxiv.org/abs/1611.06717

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