| Literature DB >> 21405321 |
R Bayes1, J F Bueno, A Hillairet, Yu I Davydov, P Depommier, W Faszer, C A Gagliardi, A Gaponenko, D R Gill, A Grossheim, P Gumplinger, M D Hasinoff, R S Henderson, J Hu, D D Koetke, R P MacDonald, G M Marshall, E L Mathie, R E Mischke, K Olchanski, A Olin, R Openshaw, J-M Poutissou, R Poutissou, V Selivanov, G Sheffer, B Shin, T D S Stanislaus, R Tacik, R E Tribble.
Abstract
The TWIST Collaboration has completed a new measurement of the energy-angle spectrum of positrons from the decay of highly polarized muons. A simultaneous measurement of the muon decay parameters ρ, δ, and P(μ)(π)ξ tests the standard model in a purely leptonic process and provides improved limits for relevant extensions to the standard model. Specifically, for the generalized left-right symmetric model |(g(R)/g(L))ζ|<0.020 and (g(L)/g(R))m(2)>578 GeV/c(2), both 90% C.L.Year: 2011 PMID： 21405321 DOI： 10.1103/PhysRevLett.106.041804
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161