Prospects of $CP$ violation in $Λ$ decay with polarized electron beam at STCF
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866916173879181312 |
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| author | Zeng, Sheng Xu, Yue Zhou, Xiao Rong Qin, Jia Jia Zheng, Bo |
| author_facet | Zeng, Sheng Xu, Yue Zhou, Xiao Rong Qin, Jia Jia Zheng, Bo |
| contents | Based on $1.89 \times 10^8$ $J/ψ\rightarrow Λ\barΛ$ Monte Carlo (MC) events produced from a longitudinally-polarized electron beam, the sensitivity of $CP$ violation of $Λ$ decay is studied with fast simulation software. In addition, the $J/ψ\rightarrow Λ\barΛ$ decay can also be used as a process to optimize the detector response using the interface provided by the fast simulation software. In the future, STCF is expected to obtain 3.4 trillion $J/ψ$ events, and the statistical sensitivity of $CP$ violation of $Λ$ decay via $J/ψ\rightarrow Λ\barΛ$ process is expected to reach $\mathcal O$~$(10^{-5})$ when the electron beam polarization is 80\%. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2306_15602 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Prospects of $CP$ violation in $Λ$ decay with polarized electron beam at STCF Zeng, Sheng Xu, Yue Zhou, Xiao Rong Qin, Jia Jia Zheng, Bo High Energy Physics - Experiment High Energy Physics - Phenomenology Based on $1.89 \times 10^8$ $J/ψ\rightarrow Λ\barΛ$ Monte Carlo (MC) events produced from a longitudinally-polarized electron beam, the sensitivity of $CP$ violation of $Λ$ decay is studied with fast simulation software. In addition, the $J/ψ\rightarrow Λ\barΛ$ decay can also be used as a process to optimize the detector response using the interface provided by the fast simulation software. In the future, STCF is expected to obtain 3.4 trillion $J/ψ$ events, and the statistical sensitivity of $CP$ violation of $Λ$ decay via $J/ψ\rightarrow Λ\barΛ$ process is expected to reach $\mathcal O$~$(10^{-5})$ when the electron beam polarization is 80\%. |
| title | Prospects of $CP$ violation in $Λ$ decay with polarized electron beam at STCF |
| topic | High Energy Physics - Experiment High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2306.15602 |