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hep-ex2004★ 41 cited
Measurement of the Muon Decay Parameter delta
TWIST Collaboration, A. Gaponenko, R. Bayes +45
The muon decay parameter delta has been measured by the TWIST collaboration. We find delta = 0.74964 +- 0.00066(stat.) +- 0.00112(syst.), consistent with the Standard Model value o…
hep-ex2004★ 44 cited
Measurement of the Michel Parameter in Muon Decay
TWIST Collaboration, J. R. Musser
The TWIST Collaboration has measured the Michel parameter in normal muon decay, . In the Standard Model, = 3/4. Deviations from this value require…
hep-ex2004★ 142 cited
Improved Measurement of the K+ to pi+ nu nubar Branching Ratio
E949 Collaboration, A. V. Artamonov
An additional event near the upper kinematic limit for K+ to pi+ nu nubar has been observed by Experiment E949 at Brookhaven National Laboratory. Combining previously reported and…