Chuan-Qi He

collaborators

3 papers

hep-ph2025

Two-loop QCD-corrections to $e^{+} e^{-} \to Z^{*} \to J / ψ + J / ψ$

Xiang Chen, Xin Guan, Chuan-Qi He +1

We present a next-to-next-to-leading-order calculation within the nonrelativistic QCD framework for the process of $e^{+} e^{-} \to Z^{*} \to J / ψ + J / ψ$ . We find t…

hep-ph2025

Analytical two-loop amplitudes of $e^{+} e^{-} ⟶ J / ψ + η_{c}$ at $B$ factories

Xiang Chen, Xin Guan, Chuan-Qi He +3

In double charmonium production, a long-standing challenge is that the theoretical predictions are not consistent with the measurements at B factories. Within the NRQCD framework,…

hep-ph2025

Single-inclusive hadron production in electron-positron annihilation at next-to-next-to-next-to-leading order in QCD

Chuan-Qi He, Hongxi Xing, Tong-Zhi Yang +1

Single-inclusive hadron production in electron-positron annihilation (SIA) represents the cleanest process for investigating the dynamics of parton hadronization, as encapsulated i…

Two-loop QCD-corrections to e+e−→Z∗→J/ψ+J/ψ

Analytical two-loop amplitudes of e+e−⟶J/ψ+ηc​ at B factories

Single-inclusive hadron production in electron-positron annihilation at next-to-next-to-next-to-leading order in QCD

Two-loop QCD-corrections to $e^{+} e^{-} \to Z^{*} \to J / ψ + J / ψ$

Analytical two-loop amplitudes of $e^{+} e^{-} ⟶ J / ψ + η_{c}$ at $B$ factories