Test of lepton flavor violation with Ke2 decay at KLOE

KLOE Collaboration

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arXiv · 0908.4584

Test of lepton flavor violation with Ke2 decay at KLOE

KLOE Collaboration

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Abstract

We present a precise measurement of the ratio R_K = Γ(Ke2(γ))/Γ(K\mu2(γ)) 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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KLOE Collaboration. 2009-08-31. Test of lepton flavor violation with Ke2 decay at KLOE. https://arxiv.org/abs/0908.4584

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