%0 Journal Article
%T Standard model and new physics contributions to K (L) and K (S) into four leptons
%A D'Ambrosio, G.
%A Greynat, D.
%A Vulvert, G.
%J European Physical Journal C
%D 2013
%V 73
%N 12
%I Springer
%@ 1434-6044
%G English
%F DAmbrosio_etal2013
%O WOS:000328342900001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1661), last updated on Fri, 03 Jan 2014 10:09:11 +0000
%X We study the K (L) and K (S) decays into four leptons (, , ) where we use a form factor motivated by vector meson dominance, and show the dependence of the branching ratios and spectra from the slopes. A precise determination of short-distance contribution to K (L) ->mu μis affected by our ignorance on the sign of the amplitude but we show a possibility to measure the sign of this amplitude by studying K (L) and K (S) decays in four leptons. We also investigate the effect of New Physics contributions for these decays.
%R 10.1140/epjc/s10052-013-2678-1
%U http://arxiv.org/abs/arXiv:1309.5736
%U https://doi.org/10.1140/epjc/s10052-013-2678-1
%P 2678 - 10pp