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Article
Report number arXiv:1609.08280
Title Measurement of Michel Parameters (¯η, ξκ) in the radiative leptonic decay of tau at Belle
Related titleMeasurement of Michel Parameters (¯η, ξκ) in the radiative leptonic decay of tau at Belle
Author(s) Belle Collaboration  Pokaż wszystkich 447 autorów
Publication 2017-06-22
Imprint 27 Sep 2016
Number of pages 4
Note Preliminary entry
In: Nucl. Part. Phys. Proc. 287-288 (2017) 11-14
In: The 14th International Workshop on Tau Lepton Physics (Tau2016), Beijing, China, 18 - 23 Sep 2016, pp.11-14
DOI 10.1016/j.nuclphysbps.2017.03.034
Subject category Particle Physics - Experiment ; Particle Physics - Experiment
Accelerator/Facility, Experiment KEK-BF ; BELLE
Abstract We present the first measurement of the Michel parameters ¯η and ξκ in the radiative leptonic decay of the τ lepton using 703 fb1 of data collected with the Belle detector at the KEKB e+e collider. The Michel parameters are measured by an unbinned maximum likelihood fit to the kinematic information of e+eτ+τ(π+π0¯ν)(lν¯νγ) (l=e or μ). The preliminary values of the measured Michel parameters are ¯η=2.0±1.5±0.8 and ξκ=0.6±0.4±0.2, where the first error is statistical and the second is systematic.
Copyright/License Elsevier B.V. (License: arXiv nonexclusive-distrib. 1.0)



Corresponding record in: Inspire


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