We present a measurement of the relative branching ratio of the decay K-0 --> pi(+/-)e(+/-)nugamma (K-e3gamma) with respect to K-0 --> pi(+/-)e(+/-)nu (K-e3 + K-e3gamma) decay. The result is based on observation of 19000 K-e3gamma and 5.6 x 10(6) K-e3 decays. The value of the branching ratio is Br(K-e3gamma(,)0 E-gamma(*) > 30 MeV, theta(egamma)(*) > 20degrees)/Br(K-e3(0)) = (0.964 +/- 0.008(-0.009)(+0.011))%. This result agrees with theoretical predictions but is at variance with a recently published result.

Measurement of the radiative Ke3 branching ratio

MARTELLI, FILIPPO;VELTRI, MICHELE;
2005

Abstract

We present a measurement of the relative branching ratio of the decay K-0 --> pi(+/-)e(+/-)nugamma (K-e3gamma) with respect to K-0 --> pi(+/-)e(+/-)nu (K-e3 + K-e3gamma) decay. The result is based on observation of 19000 K-e3gamma and 5.6 x 10(6) K-e3 decays. The value of the branching ratio is Br(K-e3gamma(,)0 E-gamma(*) > 30 MeV, theta(egamma)(*) > 20degrees)/Br(K-e3(0)) = (0.964 +/- 0.008(-0.009)(+0.011))%. This result agrees with theoretical predictions but is at variance with a recently published result.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11576/1884205
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 16
  • ???jsp.display-item.citation.isi??? 7
social impact