%0 Journal Article
%T Evidence for the Rare Decay Sigma(+) -> p mu(+)mu(-)
%A LHCb Collaboration (Aaij, R. et al
%A Garcia Martin, L. M.
%A Henry, L.
%A Martinez-Vidal, F.
%A Oyanguren, A.
%A Remon Alepuz, C.
%A Ruiz Valls, P.
%A Ruiz Vidal, J.
%A Sanchez Mayordomo, C.
%J Physical Review Letters
%D 2018
%V 120
%N 22
%I Amer Physical Soc
%@ 0031-9007
%G English
%F LHCbCollaborationAaij_etal2018
%O WOS:000433915100005
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3616), last updated on Thu, 28 Jun 2018 14:21:19 +0000
%X A search for the rare decay Sigma(+) -> p mu(+)mu(-) is performed using pp collision data recorded by the LHCb experiment at center-of-mass energies root 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 expectation, with a signal significance of 4.1 standard deviations. No significant structure is observed in the dimuon invariant mass distribution, in contrast with a previous result from the HyperCP experiment. The measured Sigma(+) -> p mu(+)mu(-) branching fraction is (2.2(-1.3)(+1.8)) x 10(-8), where statistical and systematic uncertainties are included, which is consistent with the standard model prediction.
%R 10.1103/PhysRevLett.120.221803
%U http://arxiv.org/abs/1712.08606
%U https://doi.org/10.1103/PhysRevLett.120.221803
%P 221803 - 10pp