A Study of One-Prong Tau Decays with a Charged Kaon

Details A Study of One-Prong Tau Decays with a Charged Kaon A Study of One-Prong Tau Decays with a Charged Kaon

2000-09-07

arxiv.org/abs/hep-ex/0009017v1

Eur.Phys.J.C19:653-665,2001

Physics

High Energy Physics

High Energy Physics - Experiment

30 pages, 5 figures, submitted to Eur. Phys. J. C

Scientific paper

10.1007/s100520100632

From an analysis of the ionisation energy loss of charged particles selected from 110326 e+e- -> tau+tau- candidates recorded by the OPAL detector at e+e- centre-of-mass energies near the Z0 resonance, we determine the one-prong tau decay branching ratios: Br(tau- -> nu_tau K- >=0h0) = 1.528 +- 0.039 +- 0.040 % Br(tau- -> nu_tau K-) = 0.658 +- 0.024 +- 0.029 % where the h0 notation refers to a pi0, an eta, a K^0_S, or a K^0_L, and where the first uncertainty is statistical and the second is systematic.

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