Precision Measurement of the Muon Decay Spectrum

Details Precision Measurement of the Muon Decay Spectrum Precision Measurement of the Muon Decay Spectrum

Apr 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005fuin.conf..225m&link_type=abstract

FUNDAMENTAL INTERACTIONS. Proceedings of the Nineteenth Lake Louise Winter Institute. Held 15-21 February 2004 in Lake Louise, A

Physics

Scientific paper

TWIST, the TRIUMF Weak Interaction Symmetry Test, measures simultaneously the muon decay parameters ρ, δ, and Pμξ. The ultimate goal of the experiment is to determine each of these parameters to a few parts in 104. With this precision, TWIST will confront several proposed extensions to the Standard Model. Decay event rates of several kHz allow for the collection of very large data samples, making TWIST a systematics-dominated experiment. Data are being analyzed at present that are expected to provide intermediate results for ρ and δ at ~ 10-3. In this article, the basic physics of muon decay is shown, the TWIST detector is described, our blind analysis technique is explained briefly, and the techniques used to estimate our systematic uncertainties are discussed.

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