Can I read Determination of Strong Coupling Constant from Inclusive Semileptonic Decays of Charmed Mesons on EtoBox?

Determination of Strong Coupling Constant from Inclusive Semileptonic Decays of Charmed Mesons by Wu, Jinfei; Lou, Xinchou; Che, Yuzhi; Li, Gang; Huang, Yanping; Ruan, Manqi; Ye, Jingbo is a scholarly article available to read on EtoBox.

What is Determination of Strong Coupling Constant from Inclusive Semileptonic Decays of Charmed Mesons about?

Employing the heavy quark expansion model with the kinetic scheme, we evaluate $\alpha_S(m_c^2)$, the strong coupling constant at the charm quark mass $m_c$ with data on inclusive semileptonic decays of charmed mesons. Using the experimental values of semileptonic decay widths of the $D^0$ and the $D^+$, the value of $\alpha_{s}(m_c^{2})$ is determined to be $0.445\pm0.009\pm0.114$, where the first uncertainty is experimental and the second systematic. This reported $\alpha_{s}(m_c^{2})$ is in good agreement with the value of $\alpha_{s}(m_c^{2})$ calculated by running $\alpha_S(m_Z^2)$ at the $Z^0$ boson mass $m_Z$ with the renormalization group evolution equation. In addition, values of $\alpha_{s}(m_c^{2})$ obtained individually from each of the $D^0$, $D^+$, and $D_s^+$ mesons are found to be consistent being of the same origin.

Author

Wu, Jinfei; Lou, Xinchou; Che, Yuzhi; Li, Gang; Huang, Yanping; Ruan, Manqi; Ye, Jingbo

Published

2024

Language

EN