Measurement of the Michel parameters in leptonic tau decays using the OPAL detector at LEP

1999 ◽  
Vol 76 (1-3) ◽  
pp. 147-157
Author(s):  
R. Bartoldus
Keyword(s):  
Opal Detector ◽  
Tau Decays ◽  
Michel Parameters

scholarly journals On spin asymmetry in muon and tau decays

2018 ◽  
Vol 33 (32) ◽  
pp. 1850191
Author(s):  
A. B. Arbuzov ◽  
T. V. Kopylova ◽  
I. K. Sklyarov
Keyword(s):  
Charged Lepton ◽  
Spin Asymmetry ◽  
Second Order ◽  
Tau Leptons ◽  
Mass Ratio ◽  
Fermi Model ◽  
Tau Decays ◽  
Standard Formula ◽  
Leading Logarithm ◽  
Michel Parameters

The angular asymmetry in decays of polarized muons and tau leptons is discussed. Both the standard [Formula: see text] Fermi model and the general parametrization via Michel parameters are considered. Numerical importance of contributions suppressed by charged lepton mass ratio is underlined. Contribution of the second order QED correction is estimated in the leading logarithm approximation.

scholarly journals Study of the Lorentz Structure of the Charged Weak Interaction in Tau Decays at Belle

2018 ◽  
Vol 46 ◽  
pp. 1860060
Author(s):  
Junya Sasaki
Keyword(s):  
Weak Interaction ◽  
Tau Lepton ◽  
Tau Decays ◽  
Preliminary Results ◽  
Lorentz Structure ◽  
Leptonic Decays ◽  
Decay Widths ◽  
Belle Experiment ◽  
Michel Parameters

To test the Lorentz structure of the charged weak interaction, we study leptonic decays of tau lepton in the Belle experiment. We perform this test through the measurement of Michel parameters which appear in the differential decay widths of leptonic tau decays. In this paper, we discuss the preliminary results of the measurement of Michel parameters at Belle.

A determination of two Michel parameters in purely leptonic tau decays

1993 ◽  
Vol 316 (4) ◽  
pp. 608-614 ◽  
Author(s):  
H. Albrecht ◽  
H. Ehrlichmann ◽  
T. Hamacher ◽  
R.P. Hofmann ◽  
A. Kirchhoff ◽  
...  
Keyword(s):  
Tau Decays ◽  
Michel Parameters

TAU DECAYS WITH CHARGED KAONS AT OPAL

2001 ◽  
Vol 16 (supp01b) ◽  
pp. 561-565
Author(s):  
S. TOWERS
Keyword(s):  
Energy Loss ◽  
Branching Fractions ◽  
Charged Particles ◽  
Branching Ratio ◽  
Opal Detector ◽  
Centre Of Mass ◽  
Resonant Structure ◽  
Decay Modes ◽  
Tau Decays ◽  
Ionisation Energy Loss

From an analysis of the ionisation energy loss of charged particles selected from tau pair candidates recorded in the OPAL detector at centre-of-mass energies near the Z0 resonance, we determine competitive measurements of the τ-→ντ K -≥ 0h 0 branching ratio, where the h0 notation refers to a π0, an η, a [Formula: see text], or a [Formula: see text]. We also determine the τ-→ντ K -π- π+(π0) and τ-→ντ K -π- K +(π0) branching fractions, where the (π0) notation refers to decay modes with or without an accompanying π0. In addition, we examine the resonant structure of τ-→ντ K -π-π+ candidates, and find that the resonant structure is dominated by the K1(1270) resonance.

scholarly journals Measurement of the Michel parameters in leptonic tau decays

1999 ◽  
Vol 8 (1) ◽  
pp. 3-21 ◽  
Author(s):  
K. Ackerstaff et al. ◽  
Keyword(s):  
Tau Decays ◽  
Michel Parameters

scholarly journals Measurement of the Michel parameters and the average tau-neutrino helicity from tau decays at LEP

1998 ◽  
Vol 438 (3-4) ◽  
pp. 405-416 ◽  
Author(s):  
M. Acciarri ◽  
O. Adriani ◽  
M. Aguilar-Benitez ◽  
S. Ahlen ◽  
J. Alcaraz ◽  
...  
Keyword(s):  
Tau Decays ◽  
Tau Neutrino ◽  
Michel Parameters

scholarly journals Search for lepton-number- and baryon-number-violating tau decays at Belle

2020 ◽  
Vol 102 (11) ◽  
Author(s):  
D. Sahoo ◽  
G. B. Mohanty ◽  
K. Trabelsi ◽  
I. Adachi ◽  
K. Adamczyk ◽  
...  
Keyword(s):  
Baryon Number ◽  
Lepton Number ◽  
Tau Decays

scholarly journals Semi-inclusive tau decays involving the vector or axial-vector hadronic currents

1993 ◽  
Vol 304 (3-4) ◽  
pp. 359-365 ◽  
Author(s):  
S. Narison ◽  
A. Pich
Keyword(s):  
Axial Vector ◽  
Tau Decays
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