New result on the measurement of the direct photon emission in K+ --> pi+ pi0 gamma decay
M. A. Aliev, Y. Asano, P. Depommier
Abstract
We present a new result on the K+ --> pi+ pi0 gamma decay measurement using stopped kaons. The best fit to the decay spectrum comprised of 10k events gives a branching ratio for the direct photon emission of [3.8+-0.8(stat)+-0.7(syst)] times 10-6 in the pi+ kinetic energy region of 55 to 90 MeV. This result has been obtained with the assumption that there is no component due to interference with the inner bremsstrahlung.
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