Test of lepton flavor violation with Ke2 decay at KLOE

Details Test of lepton flavor violation with Ke2 decay at KLOE Test of lepton flavor violation with Ke2 decay at KLOE

2009-08-31

arxiv.org/abs/0908.4584v1

PoS KAON2009:026,2009

Physics

High Energy Physics

High Energy Physics - Experiment

6 pages, prepared for KAON09 Conference, Tsukuba 9-12 June 2009

Scientific paper

We present a precise measurement of the ratio R_K = \Gamma(Ke2(\gamma))/\Gamma(K\mu2(\gamma)) performed with the KLOE detector. The results are based on data collected at the Frascati e^+e^- collider DAFNE for an integrated luminosity of 2.2 fb^{-1}. We find R_K = (2.493\pm0.025_{stat}\pm0.019_{syst})\times 10^{-5}, in agreement with the Standard Model expectation. This result is used to improve constraints on parameters of the Minimal Supersymmetric Standard Model with lepton flavor violation.

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