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A precision measurement of the muon decay parameter delta
[article]
2011
arXiv
pre-print
The muon decay parameter delta characterizes momentum dependence of the parity-violating muon decay asymmetry. A new measurement of delta has been performed using the first physics data recorded by the TWIST experiment at TRIUMF. The obtained value, delta=0.74964+-0.00066(stat.)+-0.00112(syst.), is consistent with the Standard Model expectation delta=3/4. This is the first determination of delta performed using a blind analysis technique. Combined with other data, the measurement sets new
arXiv:1104.2914v1
fatcat:esm7wwmxlrfthmansdmsg5x4cy