English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We report a feasibility study of $CP$ violation of $\tau^{-}\rightarrowK_{S}\pi^{-} \nu_{\tau}$ decay at a Super Tau Charm Facility~(STCF).With anexpected luminosity of 1~ab$^{-1}$ collected by STCF per year at acenter-of-mass energy of 4.26 GeV, the statistical sensitivity for the $CP$violation is determined to be of order $9.7\times10^{-4}$ by measuring thedecay-rate difference between $\tau^{+}\rightarrowK_{S}\pi^{+}\bar{\nu}_{\tau}$ and $\tau^{-}\rightarrow K_{S}\pi^{-}\nu_{\tau}$. The analysis is performed using a reliable fast simulationsoftware package, which can describe the detector responses properly and varythe responses flexibly for further optimization. Moreover, the energy-dependentefficiencies for reconstructing $\tau^{-}\rightarrow K_{S}\pi^{-} \nu_{\tau}$are presented and the expected $CP$ sensitivity is proportional to$1/\sqrt{\mathcal{L}}$ in the energy region from 4.0 to 5.0 GeV. Thesensitivity of $CP$ violation is of order $3.1\times10^{-4}$ with 10~ab$^{-1}$integrated luminosity, which is equivalent to ten years data taking in thisenergy region at STCF.

Feasibility study of $CP$ Violation in $\tau^{-}\to K_{S}\pi^{-}\nu_{\tau}$ decays at Super Tau Charm Facility