Report
First lattice QCD calculation of $J/\psi$ semileptonic decay containing $D$ and $D_s$ particles
| العنوان: | First lattice QCD calculation of $J/\psi$ semileptonic decay containing $D$ and $D_s$ particles |
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| المؤلفون: | Meng, Yu, Dang, Jin-Long, Liu, Chuan, Tuo, Xin-Yu, Yan, Haobo, Yang, Yi-Bo, Zhang, Ke-Long |
| المصدر: | PRD110,074510(2024) |
| سنة النشر: | 2024 |
| المجموعة: | High Energy Physics - Experiment High Energy Physics - Lattice High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Lattice, High Energy Physics - Experiment, High Energy Physics - Phenomenology |
| الوصف: | We perform the first lattice calculation on the semileptonic decay of $J/\psi$ using the (2+1)-flavor Wilson-clover gauge ensembles generated by CLQCD collaboration. Three gauge ensembles with different lattice spacings, from 0.0519 fm to 0.1053 fm, and pion masses, $m_{\pi}\sim$ 300 MeV, are utilized. After a naive continuum extrapolation using three lattice spacings, we obtain $\operatorname{Br}(J/\psi\rightarrow D_s e\nu_e)=1.90(6)(5)_{V_{cs}}\times 10^{-10}$ and $\operatorname{Br}(J/\psi\rightarrow D e\nu_e)=1.21(6)(9)_{V_{cd}}\times 10^{-11}$, where the first errors are statistical, and the second come from the uncertainties of CKM matrix element $V_{cs(d)}$. The ratios of the branching fractions between lepton $\mu$ and $e$ are also calculated as $R_{J/\psi}(D_s)=0.97002(8)$ and $R_{J/\psi}(D)=0.97423(15)$ after performing a continuum limit including only $a^2$ term. The ratios provide necessary theoretical support for the future experimental test of lepton flavor universality. Comment: 18 pages, 9 figures, published version with minor word editing |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevD.110.074510 |
| URL الوصول: | http://arxiv.org/abs/2407.13568 |
| رقم الانضمام: | edsarx.2407.13568 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevD.110.074510 |
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