TWIST: Precision Measurement of the Muon Decay Parameters

Abstract

The TWIST experiment has made a precision measurement of three of the decay parameters in muon decay. The newest results are rho = 0.75014 +-0.00017(stat) +-0.00044(sys) +-0.00011(eta) and delta = 0.75067 +-0.00030(stat) +-0.00067(sys). Together with previously published results, improved constraints on possible extensions of the electroweak Standard Model are derived.

ICHEP08

References in corpus (5)

• Global analysis of muon decay measurements
• A Precision Measurement of the Muon Decay Parameters $\rho$ and $\delta$
• Measurement of P_{mu}xi in Polarized Muon Decay
• Precision planar drift chambers and cradle for the TWIST muon decay spectrometer
• Time expansion chamber system for characterization of TWIST low energy muon beams