Measurement of the Decay KL -> pi0 e+ e- gamma

KTeV Collaboration: E. Abouzaid , M. Arenton , A.R. Barker , L. Bellantoni , E. Blucher , G.J. Bock , E. Cheu , R. Coleman

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B. Cox A.R. Erwin C.O. Escobar A. Glazov A. Golossanov R.A. Gomes P. Gouffon Y.B. Hsiung D.A. Jensen R. Kessler Y.J. Kim K. Kotera A. Ledovskoy P.L. McBride E. Monnier K.S. Nelson H. Nguyen R. Niclasen D.G. Phillips II H. Ping E.J. Ramberg R.E. Ray M. Ronquest E. Santos W. Slater D. Smith N. Solomey E.C. Swallow P.A. Toale R. Tschirhart C. Velissaris Y.W. Wah J. Wang H.B. White J. Whitmore M. J. Wilking R. Winston E.T. Worcester M. Worcester T. Yamanaka E. D. Zimmerman R.F. Zukanovich

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classification ✦ hep-ex

keywords gammaktevmeasurementbranchingratioanalysisbackgroundcollected

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We report on a new measurement of the branching ratio B(KL -> pi0 e+ e- gamma) using the KTeV detector. This analysis uses the full KTeV data set collected from 1997 to 2000. We reconstruct 139 events over a background of 14, which results in B(KL -> pi0 e+ e- gamma) = (1.62 +/- 0.14 (stat) +/- 0.09 (syst)) x 10^{-8}. This result supersedes the earlier KTeV measurement of this branching ratio.

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Measurement of the Decay KL -> pi0 e+ e- gamma

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