Lectures
Analysis of tau- -> K_S pi- nu decay at Belle
by Denis Epifanov
Friday, 6 April 2007
from
to
(Japan)
Description |
This seminar is devoted to the study of tau- -> K_S pi- nu decay with large statistics of about 351/fb collected by Belle. I'd like to discuss following items: * Motivation of the study of tau decays into the hadronic system with strangeness. Why should we study this particular Ks pi nu decay mode first? * Event selection strategy. Detection efficiency and corrections. * The main sources of background, strategies to deal with it. * Calculation of the branching fraction. Systematic uncertainties, weak points. Comparison with the other experiments. * Study of the KS pi invariant mass spectrum: - KS pi mass spectra of the background processes. What are the problems? - Taking into account the detector apparatus function. - Theoretical description of the mass spectrum. Different parametrizations of the scalar and vector formfactors. - Precise measurement of the K* meson mass and width. Some other studies with tau -> Ks pi nu sample, which will be done in the nearest future are briefly discussed. |
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