Measurement of the muon decay parameter {delta}
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 of 3/4. This result implies that the product P{sub {mu}}{xi} of the muon polarization in pion decay, P{sub {mu}}, and t...
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| Veröffentlicht in: | Physical review. D, Particles and fields Particles and fields, 2005-04, Vol.71 (7) |
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| container_title | Physical review. D, Particles and fields |
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| creator | Gaponenko, A. Green, P. Kitching, P. MacDonald, R.P. Quraan, M.A. Rodning, N.L. Sobratee, F. Bayes, R. Davydov, Yu. I. Doornbos, J. Faszer, W. Fujiwara, M.C. Gill, D.R. Gumplinger, P. Henderson, R.S. Hu, J. Macdonald, J.A. Marshall, G.M. Mischke, R.E. Nozar, M. |
| description | 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 of 3/4. This result implies that the product P{sub {mu}}{xi} of the muon polarization in pion decay, P{sub {mu}}, and the muon decay parameter {xi} falls within the 90% confidence interval 0.9960 |
| doi_str_mv | 10.1103/PhysRevD.71.071101 |
| format | Article |
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I. ; Doornbos, J. ; Faszer, W. ; Fujiwara, M.C. ; Gill, D.R. ; Gumplinger, P. ; Henderson, R.S. ; Hu, J. ; Macdonald, J.A. ; Marshall, G.M. ; Mischke, R.E. ; Nozar, M.</creator><creatorcontrib>Gaponenko, A. ; Green, P. ; Kitching, P. ; MacDonald, R.P. ; Quraan, M.A. ; Rodning, N.L. ; Sobratee, F. ; Bayes, R. ; Davydov, Yu. I. ; Doornbos, J. ; Faszer, W. ; Fujiwara, M.C. ; Gill, D.R. ; Gumplinger, P. ; Henderson, R.S. ; Hu, J. ; Macdonald, J.A. ; Marshall, G.M. ; Mischke, R.E. ; Nozar, M.</creatorcontrib><description>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 of 3/4. This result implies that the product P{sub {mu}}{xi} of the muon polarization in pion decay, P{sub {mu}}, and the muon decay parameter {xi} falls within the 90% confidence interval 0.9960<P{sub {mu}}{xi}{<=}{xi}<1.0040. 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| subjects | MUONS PARTICLE DECAY PHYSICS OF ELEMENTARY PARTICLES AND FIELDS PIONS POLARIZATION STANDARD MODEL |
| title | Measurement of the muon decay parameter {delta} |
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