We present a measurement of the relative branching ratio of the decay K0 → π± e± νγ (Ke3γ) with respect to K0 → π± e± ν (Ke3 + Ke3γ ) decay. The result is based on observation of 19 000 Ke3γ and 5.6 × 10^6 Ke3 decays. The value of the branching ratio is BR(K0e3γ , E∗γ > 30 MeV, θ∗eγ > 20◦)/ Br(K0e3 ) = (0.964 ± 0.008+0.011-0.009)%. This result agrees with theoretical predictions but is at variance with a recently published result.
Measurement of the radiative Ke3 branching ratio / A., L., D., M., A., B., R. S., D., T. J., G., B., H., G. E., K., C., L., D. J., M., E., O., M. A., P., T. O., W., S. A., W., G., B., G., B., A., C., T., C.D., D., C., G., D., N., D., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 605:3-4(2005), pp. 247-255. [10.1016/j.physletb.2004.11.056]
Measurement of the radiative Ke3 branching ratio
BIZZETI, Andrea;
2005
Abstract
We present a measurement of the relative branching ratio of the decay K0 → π± e± νγ (Ke3γ) with respect to K0 → π± e± ν (Ke3 + Ke3γ ) decay. The result is based on observation of 19 000 Ke3γ and 5.6 × 10^6 Ke3 decays. The value of the branching ratio is BR(K0e3γ , E∗γ > 30 MeV, θ∗eγ > 20◦)/ Br(K0e3 ) = (0.964 ± 0.008+0.011-0.009)%. This result agrees with theoretical predictions but is at variance with a recently published result.| File | Dimensione | Formato | |
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