Author

Xu-Chang Zheng

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Preprint Oct 2026

Next-to-leading-order QCD study of $e^+e^- \to \eta_c + c\bar{c}$ at $B$ factories

We study the process $e^+e^- \to \gamma^\ast \to \eta_c + c\bar{c} + X$ at next-to-leading order (NLO) in QCD within the framework of nonrelativistic QCD (NRQCD) factorization, retaining the color-singlet contribution at leading order in the heavy-quark relative velocity $v$. At the $e^+e^-$ collision energy $\sqrt{s}...

Lu-Yao Zhang, Xu-Chang Zheng, Xing-Gang Wu · 0 citations

Preprint Oct 2026

Revisiting $B_c^{(*)}$ production in $Z$-boson decays at NLO in QCD

We study $B_c^{(*)}$ production in $Z$-boson decays at next-to-leading order (NLO) in QCD within the color-singlet nonrelativistic QCD framework. The analysis covers both the $1S$ and $2S$ pseudoscalar and vector states, extending the phenomenological study to radially excited $B_c$ mesons. We calculate direct producti...

Qiu-Ping Ke, Lei Guo, Jun Zeng et al. · 0 citations