Novel approach to investigate $\eta$ decays via $\eta'\rightarrow\pi\pi\eta$
| Title: | Novel approach to investigate $\eta$ decays via $\eta'\rightarrow\pi\pi\eta$ |
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| Authors: | Kang, Xiaolin, Ji, Yuyao, Yuan, Xiaoqing, Xiang, Benhou, Zhou, Xiaorong, Peng, Haiping, Huang, Xingtao, Fang, Shuangshi |
| Publication Year: | 2023 |
| Collection: | High Energy Physics - Experiment High Energy Physics - Phenomenology |
| Subject Terms: | High Energy Physics - Phenomenology, High Energy Physics - Experiment |
| More Details: | To avoid the impact from the background events directly from $e^+e^-$ annihilations or $J/\psi$ decays, we propose a novel approach to investigate $\eta$ decays, in particular for its rare or forbidden decays, by using $\eta^\prime\rightarrow\pi\pi\eta$ produced in $J/\psi$ decays at the $\tau-$charm factories. Based on the MC studies of a few typical decays, $\eta\rightarrow \pi\pi$, $\gamma l^+l^- (l= e, \mu)$, $l^+l^-$, as well as $l^+l^-\pi^0$, the sensitivities could be obviously improved by taking advantage of the extra constraint of $\eta^\prime$. Using one trillion $J/\psi$ events accumulated at the Super $\tau$-Charm facility, the precision on the investigation of $\eta$ decays could be improved significantly and the observation of the rare decay $\eta\rightarrow e^+e^-$ is even accessable. Comment: 7 pages, 6 figures |
| Document Type: | Working Paper |
| DOI: | 10.1103/PhysRevD.108.014038 |
| Access URL: | http://arxiv.org/abs/2306.02810 |
| Accession Number: | edsarx.2306.02810 |
| Database: | arXiv |
| DOI: | 10.1103/PhysRevD.108.014038 |
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