Experimental Study of the Radiative Decays K+ -> mu+ nu e+e- and K+ -> e+ nu e+e-

Details Experimental Study of the Radiative Decays K+ -> mu+ nu e+e- and K+ -> e+ nu e+e- Experimental Study of the Radiative Decays K+ -> mu+ nu e+e- and K+ -> e+ nu e+e-

2002-04-05

arxiv.org/abs/hep-ex/0204006v1

Phys.Rev.Lett.89:061803,2002

Physics

High Energy Physics

High Energy Physics - Experiment

4 pages, 3 figures, RevTeX4

Scientific paper

10.1103/PhysRevLett.89.061803

Experiment 865 at the Brookhaven AGS obtained 410 K+ -> e+ nu e+e- and 2679
K+ -> mu+ nu e+e- events including 10% and 19% background. The branching ratios
were measured to be (2.48+-0.14(stat.)+-0.14(syst.))x10^-8 (m_ee>150 MeV) and
(7.06+-0.16+-0.26)x10^-8 (m_ee>145 MeV), respectively. Results for the decay
form factors are presented.

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