A Study of the Radiative KL->pi nu e (g) Decay and Possible Osservation of Direct Photon Emission with the KLOE Detector
Abstract
We present the measurement of the ratio R = (;>30,>20)() and a first measurement of the direct emission contribution for the same process. We use 328 pb-1 of data collected at in 2001 and 2002, corresponding to about 3 million of events and about 9 thousand radiative events. Our result is R= (924 23stat 16syst)10-5 for the branching ratio and X =-2.3 1.3stat 1.4syst for the parameter describing direct emission.
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