The decay rate of K-S -> pi ev relative to the rate of K-L -> pi rev has been measured by the NA48 Collaboration in a neutral kaon beam originating from 400 GeV proton-Be interactions at the CERN SPS. The result is 0.993 +/- 0.026(stat) +/- 0.022(syst), compatible with I in agreement with the Standard Model prediction at tree level. It implies B R (K-S -> pi ev) = (7.05 +/- 0.18(stat) +/- 0.16(syst)) X 10(-4).
Determination of the relative decay rate KS -> πeν / KL -> πeν
MARTELLI, FILIPPO;VELTRI, MICHELE;
2007
Abstract
The decay rate of K-S -> pi ev relative to the rate of K-L -> pi rev has been measured by the NA48 Collaboration in a neutral kaon beam originating from 400 GeV proton-Be interactions at the CERN SPS. The result is 0.993 +/- 0.026(stat) +/- 0.022(syst), compatible with I in agreement with the Standard Model prediction at tree level. It implies B R (K-S -> pi ev) = (7.05 +/- 0.18(stat) +/- 0.16(syst)) X 10(-4).File in questo prodotto:
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