Qin Chang

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hep-ph2025

The $Λ_{b} \to Λ$ transition form factors in perturbative QCD approach

Lei Yang, Jia-Jie Han, Qin Chang +1

In this work, we investigate the $Λ_{b} \to Λ$ transition form factors in the perturbative QCD (PQCD) approach, incorporating higher-twist light-cone distribution amplitudes (LCDAs).…

hep-ph2025

Form Factors for $B_{c}^{*} \to η_{c} + l ν_{l}$ at NLO in QCD

Wei Tao, Ya-Hui Zhao, Li-Ting Wang +2

We present the Non-Relativistic QCD (NRQCD) calculations at the next-to-leading order (NLO) of $α_{s}$ for $B_{c}^{*} \to η_{c}$ vector, axial-vector, tensor and axial-tensor form factors,…

hep-ph2025

Next-to-leading order QCD corrections to $B_{c}^{*} \to J / ψ$ form factors

Qin Chang, Wei Tao, Zhen-Jun Xiao +1

Within the framework of Non-Relativistic Quantum Chromodynamics (NRQCD) factorization, we calculate the next-to-leading order (NLO) perturbative QCD corrections to the form factors…

hep-ph2024

Probing new physics with polarization components of the tau lepton in quasielastic $e^{-} p \to Λ_{c} τ^{-}$ scattering process

Xin-Shuai Yan, Liang-Hui Zhang, Qin Chang +1

Kinematics restrict the ability of rare charm decays to explore the charged Lepton Flavor Violation processes mediated by the quark-level $c \to u ℓ τ$ transition. To fill the ga…

The Λb​→Λ transition form factors in perturbative QCD approach

Form Factors for Bc∗​→ηc​+lνl​ at NLO in QCD

Next-to-leading order QCD corrections to Bc∗​→J/ψ form factors

Probing new physics with polarization components of the tau lepton in quasielastic e−p→Λc​τ− scattering process

The $Λ_{b} \to Λ$ transition form factors in perturbative QCD approach

Form Factors for $B_{c}^{*} \to η_{c} + l ν_{l}$ at NLO in QCD

Next-to-leading order QCD corrections to $B_{c}^{*} \to J / ψ$ form factors

Probing new physics with polarization components of the tau lepton in quasielastic $e^{-} p \to Λ_{c} τ^{-}$ scattering process