![The first measurement of the Michel parameter _j63 [eta] in _t63-decays [tau-decays] PDF](https://books.google.com/books/content/images/frontcover/7C3SGwAACAAJ?fife=w150-h200)
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Languages : de
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The first measurement of the Michel parameter _j63 [eta] in _t63-decays [tau-decays]
![The first measurement of the Michel parameter _j63 [eta] in _t63-decays [tau-decays] PDF](https://books.google.com/books/content/images/frontcover/7C3SGwAACAAJ?fife=w80-h100)
Author: The first measurement of the Michel parameter η [eta] in τ-decays [tau-decays]
![The first measurement of the Michel parameter η [eta] in τ-decays [tau-decays] PDF](https://books.google.com/books/content/images/frontcover/ZITFzQEACAAJ?fife=w80-h100)
Author: A Measurement of the Michel Parameters [rho] and [eta] in Leptonic Tau Decays
![A Measurement of the Michel Parameters [rho] and [eta] in Leptonic Tau Decays PDF](https://books.google.com/books/content/images/frontcover/PYwzQwAACAAJ?fife=w80-h100)
Author: Mandeepa ChadhaA Measurement of the Michel Parameters in Leptonic Decays of the Tau
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Languages : en
Pages : 11
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We have measured the spectral shape Michel parameters [rho] and [eta] using leptonic decays of the [tau], recorded by the CLEO II detector. Assuming e-[mu] universality, we find [rho]{sub e{mu}}= 0.735 ± 0.013 ± 0.008 and [eta]{sub e{mu}} = 0.015 ± 0.061 ± 0.062, where the first error is statistical and the second systematic.
Measurement of the Michel Parameters in Tau Decays
Author: Edmund Peter WhelanA Measurement of the Michel parameters and [ny tief tau] helicity in [tau] lepton decays with the L3 detector at LEP
![A Measurement of the Michel parameters and [ny tief tau] helicity in [tau] lepton decays with the L3 detector at LEP PDF](https://books.google.com/books/content/images/frontcover/2Y_-MwEACAAJ?fife=w80-h100)
Author: Pavel Anatolievitch KapinosPublisher:
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Languages : en
Pages : 134
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Study of Michel Spectrum of Tau Decay
Author: Nicole L. AckermanPublisher:
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Languages : en
Pages : 53
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This thesis is the beginning of a larger project to use BaBar to examine weak couplings through leptonic [tau] decay. I will use the ratio of Br... and Br... and the Michel parameters [rho] and [eta]. which describe the momenta spectrum of the daughter leptons. I studied using a simultaneous fit to the [tau] --> e and [tau] --> [mu] momentum spectra, using [rho], [eta], the ratio Br..., and total number of events as the fit variables. I created a simple Monte Carlo simulation which generated a. sample data spectrum and fit it for the Michel parameters [rho] and [eta]. I used the Monte Carlo to assess the impact of the uncertainties in the detector response function on the measurement of the ratio Br... My conclusion is that the three efficiency uncertainties equally have the greatest effect on the measurement of the number of events. The energy offset affects the measurement of Br... and that the energy scale and offset uncertainties have a non-negligible effect on [rho] and [eta].
Measurement of the Michel Parameter [rho] in Muon Decay
![Measurement of the Michel Parameter [rho] in Muon Decay PDF](https://books.google.com/books/content/images/frontcover/dqO_jwEACAAJ?fife=w80-h100)
Author: James Raymond MusserPublisher:
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Languages : en
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The TWIST Collaboration has measured the Michel parameter [rho] in normal muon decay, [mu] --> [epsilon]v[subscript epsilon]v̄[subscript mu]. In the standard model of particle physics, [rho] = 3/4. Deviations from this value require mixing of left- and right-handed muon and electron couplings in the muon-decay Lagrangian. We find [rho] = 0.75080 "0.00032(stat.)"0.00097(syst.) "0.00023, where the last uncertainty represents the dependence of [rho] on the Michel parameter [eta]. This result sets new limits on the W[subscript]L - W[subscript]R mixing angle in left-right symmetric models.
A Measurement of the Tau Michel Parameters at SLD.
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Languages : en
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This thesis presents a measurement of the tau Michel parameters. This measurement utilizes the highly polarized SLC electron beam to extract these quantities directly from the measured tau decay spectra using the 1993--95 SLD sample of 4,528 tau pair events. The results are[rho][sup e]= 0.71[+-] 0.14[+-] 0.05, [xi][sup e]= 1.16[+-] 0.52[+-] 0.06, and ([xi][delta])[sup e]= 0.85[+-] 0.43[+-] 0.08 for tau decays to electrons and[rho][sup[mu]]= 0.54[+-] 0.28[sup[minus]] 0.14, [eta][sup[mu]]=[minus]0.59[+-] 0.82[+-] 0.45, [xi][sup[mu]]= 0.75[+-] 0.50[+-] 0.14, and ([xi][delta])[sup[mu]]= 0.82[+-] 0.32[+-] 0.07 for tau decays to muons. Combining all leptonic tau decays gives[rho]= 0.72[+-] 0.09[+-] 0.03, [xi]= 1.05[+-] 0.35[+-] 0.04, and[Xi][delta]= 0.88[+-] 0.27[+-] 0.04. These results agree well with the current world average and the Standard Model.
A Measurement of the Michel Parameters and {nü}{tau} Helicity in {tau} Lepton Decays with the L3 Detector at LEP
Author: Pavel Anatolievitch KapinosPublisher:
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Languages : de
Pages : 134
Book Description