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Measurement of the spectral function for the $τ^-\to K^-K_Sν_τ$ decay in BABAR experiment
by S. I. Serednyakov
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Submission summary
| Authors (as registered SciPost users): | Sergey Serednyakov |
| Submission information | |
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| Preprint Link: | https://arxiv.org/abs/1810.06242v2 (pdf) |
| Date accepted: | Jan. 17, 2019 |
| Date submitted: | Dec. 7, 2018, 1 a.m. |
| Submitted by: | Sergey Serednyakov |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | The 15th International Workshop on Tau Lepton Physics (TAU2018) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Experimental |
Abstract
The decay $\tau^{-}\to K^{-}K_S\nu_{\tau}$ has been studied using $430\times10^6$ $e^+e^-\to \tau^+\tau^-$ 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 $K^{-}K_S$ system has been measured and the spectral function has been obtained. The measured branching fraction ${\cal B}(\tau^{-}\to K^{-}K_S\nu_{\tau}) = (0.739\pm 0.011(\rm stat.)\pm 0.020(\rm syst.))\times 10^{-3}$ is found to be in agreement with earlier measurements.
Published as SciPost Phys. Proc. 1, 046 (2019)