From the 2002 data taking with a neutral kaon beam extracted from the CERN-SPS, the NA48/1 experiment observed 97 XI0→Σ+μ−ν_μ candidates with a background contamination of 30.8±4.2 events. From this sample, the BR(XI0→Σ+μ−ν_μ) is measured to be (2.17±0.32stat±0.17syst)×10−6.
Measurement of the branching ratio of the decay Xi(0) -> Sigma(+)mu(-)(nu)over-bar(mu)
BALDINI, Wander;DALPIAZ, Pietro;GIANOLI, Alberto;PETRUCCI, Ferruccio Carlo;SAVRIE', Mauro;
2013
Abstract
From the 2002 data taking with a neutral kaon beam extracted from the CERN-SPS, the NA48/1 experiment observed 97 XI0→Σ+μ−ν_μ candidates with a background contamination of 30.8±4.2 events. From this sample, the BR(XI0→Σ+μ−ν_μ) is measured to be (2.17±0.32stat±0.17syst)×10−6.File in questo prodotto:
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