Measurement of the spectral function for the $τ^-\to K^-K_Sν_τ$ decay in BABAR experiment
| Autor: | Sergey Serednyakov |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | SciPost Physics Proceedings, Iss 1, p 046 (2019) |
| ISSN: | 2666-4003 |
| Popis: | The decay \mathbf{\tau^{-}\to K^{-}K_S\nu_{\tau}}𝛕−→𝐊−𝐊𝐒𝛎𝛕 has been studied using \mathbf{430\times10^6 ~ e^+e^-\to \tau^+\tau^-}430×106𝐞+𝐞−→𝛕+𝛕− events produced at a center-of-mass energy around 10.6 GeV at the PEP-II collider and studied with the BABAR detector. The mass spectrum of the \mathbf{K^{-}K_S}𝐊−𝐊𝐒 system has been measured and the spectral function has been obtained. The measured branching fraction \mathbf{{\cal B}(\tau^{-}\to K^{-}K_S\nu_{\tau})= (0.739\pm 0.011(\rm stat.)\pm 0.020(\rm syst.))}\mathbf{\times 10^{-3}}×10−3 is found to be in agreement with earlier measurements. |
| Databáze: | OpenAIRE |
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