Hai-Bing Fu

Characterize the properties of $D_{s}^{+}$ -meson decay constant and leptonic decays by using QCD sum rules within background field theory framework

Jian-Qi Chen, Ya-Xiong Wang, Hai-Bing Fu

The leptonic decays of the $D_{s}^{+}$ -meson have received considerable attention in recent years. In this work, we perform a precise calculation of the decay constant $f_{D_{s}^{+}}$ usin…

Scrutinizing lepton flavor universality and transition form factor correlation from charmed meson semileptonic decay into light strange vector $K^{*}$ meson

Sheng-Bo Wu, Dong Huang, Fang-Ping Peng +2

In this paper, we calculate the transition form factors (TFFs) $A_{1, 2} (q^{2})$ and $V (q^{2})$ of $D_{s}^{+} \to K^{* 0}$ decays by using the QCD light-cone sum rule (QCD LCSR) and construc…

Addressing the lightest $S$ -wave strange $K_{0}^{*} (700) / κ$ resonance in four-body semileptonic $B ˉ_{s}^{0} \to K^{0} π^{+} ℓ^{-} ν ˉ_{ℓ}$ decays

Dong Huang, Sheng-Bo Wu, Fang-Ping Peng +2

As the lightest strange scalar resonance, $K_{0}^{*} (700)$ (also called $κ$ ) has a large width and resides close to the $K π$ threshold, leading to a longstanding debate about its inter…

Quasi-four-body semileptonic decay $B ˉ^{0} \to a_{0} (1450)^{+} (\to π^{+} η) ℓ^{-} ν ˉ_{ℓ}$ within $a_{0} (1450)$ -resonance leading-twist LCDA under QCDSR

Ya-Lin Song, Yin-Long Yang, Yan-Ting Yang +4

The finite width of broad scalar resonances should be taken into account when relating semileptonic $B$ -meson transitions to experimentally reconstructable multihadron final states…

Probing the equivalence of chiral LCSRs in $D \to π e ν_{e}$ decays and extraction of $∣ V_{c d} ∣$

Xiu-Fen Wang, Hai-Jiang Tian, Yin-Long Yang +2

In the paper, we have carried out research on the $D \to π$ decay process. We employ two different currents to study the $D \to π$ transition form factors (TFFs) by using the light-con…

Nature of $K^{*} (1680)$ and $q q ˉ$ -hybrid mixing as the SU(3) partner of $η_{1} (1855)$ in the strange sector

Samee Ullah, Ye Cao, Ming-Xiao Duan +2

We presents an investigation of the $K^{*} (1680)$ state in its strong decays into two-body finial states within the flux-tube model and quark pair creation model. Since the charge co…

Probing the $γ γ^{*} \to η^{(')}$ Transition Form Factors with Newly Derived $η^{(')}$ -Meson Light-Cone Distribution Amplitudes

Dan-Dan Hu, Xing-Gang Wu, Yu-Jie Zhang +2

In the present work, we analyze the properties of the transition form factors (TFFs) for the $γ γ^{*} \to η^{(')}$ process, employing the $η^{(')}$ -meson light-cone distribut…

Non-perturbaitve effects for the isoscalar light vector $ω$ -meson in charmed meson semileptonic decays

Yin-Long Yang, Fang-Ping Peng, Yan-Ting Yang +2

Motivated by the renewed attention from the recent BESIII experiment on the semileptonic decay $D \to V ℓ ν_{ℓ}$ , we investigate semileptonic decay $D^{+} \to ω ℓ^{+} ν_{ℓ}$ wit…

Searching the possibility of $a_{0} (1450)$ scalar state being a diquark structure via charmed meson semileptonic decays

Ya-Lin Song, Yin-Long Yang, Ye Cao +2

The internal structure of light scalar state $a_{0} (1450)$ has not been definitively determined, it may consist of multiple possible states. Among them, it has the possibility of bei…

Light-cone sum rules analysis of the semi-leptonic $D_{s}^{+} \to f_{0} (980) (\to π^{+} π^{-}) e^{+} ν_{e}$ decay incorporating $f_{0} (980)$ mixing state twist-2 distribution amplitudes

Dan-Dan Hu, Xing-Gang Wu, Hai-Jiang Tian +2

The isospin-singlet scalar meson $f_{0} (980)$ is hypothesized to consist of two energy eigenstates, forming a mixture of $\frac{1}{2} (u ˉ u + d ˉ d)$ and $s ˉ s$ . Bui…

Status of the $D_{s}^{+} \to ϕ ℓ^{+} ν_{ℓ}$ decay with a chiral-odd $ϕ$ -meson light-cone distribution amplitude

Ya-Xiong Wang, Dan-Dan Hu, Wan-Bing Luo +2

The twist-2 distribution amplitude of the $ϕ$ -meson has attracted considerable interest due to its unique properties. In this work, we construct the transverse leading-twist light-…

hep-ph2025★ 2 cited

Exploring the exclusive decay $B^{+} \to ω ℓ^{+} ν$ with light-cone sum rules

Yin-Long Yang, Ya-Lin Song, Fang-Ping Peng +3

In this paper, we calculate the Cabibbo-Kobayashi-Maskawa matrix element $∣ V_{u b} ∣$ by the semileptonic decay $B^{+} \to ω ℓ^{+} ν$ . For the transition form factors (TFFs) $A_{1} (q^{2})$ ,…

$η_{c}$ leading-twist distribution amplitude and the $B_{c} \to η_{c} ℓ ν ˉ_{ℓ}$ semileptonic decays using QCD Sum Rules

Long Zeng, Xing-Gang Wu, Dan-Dan Hu +3

In this paper, we investigate the semileptonic decays $B_{c} \to η_{c} ℓ ν ˉ_{ℓ}$ using the quantum chromodynamics(QCD) sum rules within the framework of Standard Model (SM). We fu…

hep-ph2025★ 2 cited

Longitudinal leading-twist distribution amplitude of the $^{1} P_{1}$ -state $b_{1} (1235)$ meson and its implications on $B \to b_{1} (1235) ℓ^{+} ν_{ℓ}$ decays

Long Zeng, Xing-Gang Wu, Dan-Dan Hu +2

In the paper, we derive the $ξ$ -moments $⟨ ξ_{2; b_{1}}^{n; ∥} ⟩$ of the longitudinal leading-twist distribution amplitude $ϕ_{2; b_{1}}^{∥}$ for $^{1} P_{1}$ -state $b_{1} (1235)$ -mes…

hep-ph2025★ 5 cited

Footprint in fitting $B \to D$ vector form factor and determination for $D$ -meson leading-twist LCDA

Sheng-Bo Wu, Hai-Jiang Tian, Yin-Long Yang +3

In this paper, we fit the $B \to D$ vector transition form factor (TFF) by using the data measured by \textsl{BABAR} and Belle Collaborations within Monte Carlo (MC) method. Meanwhi…

The rare decay $B^{+} \to K^{+} ℓ^{+} ℓ^{-} (ν ν ˉ)$ under the QCD sum rules approach

Hai-Jiang Tian, Hai-Bing Fu, Tao Zhong +2

In the paper, we conduct a detailed investigation of the rare decay processes of charged meson, specifically $B^{+} \to K^{+} ℓ^{+} ℓ^{-}$ with $ℓ = (e, μ, τ)$ and $B^{+} \to K^{+} ν ν ˉ$ .…

Prospective analysis of CKM element $∣ V_{c d} ∣$ and $D^{+}$ -meson decay constant from leptonic decays $D^{+} \to ℓ^{+} ν$

Ya-Xiong Wang, Hai-Jiang Tian, Yin-Long Yang +2

The leptonic decay of $D^{+}$ -meson has attracted significant interest due to its unique characteristics. In this paper, we carry out an investigation into the $D^{+}$ -meson leptonic d…

$B_{(s)} \to S (a_{0} (1450), K_{0}^{*} (1430), f_{0} (1500))$ helicity form factors within QCD light-cone sum rules

Yi Zhang, Wei Cheng, Jia-Wei Zhang +3

In this paper, we investigate the helicity form factors (HFFs) of the $B_{(s)}$ -meson decay into a scalar meson with a mass larger than 1~GeV, {\it i.e.,} $B \to a_{0} (1450)$ , $B_{(s…

hep-ph2024★ 9 cited

Probing $∣ V_{cs} ∣$ and lepton flavor universality through $D \to K_{0}^{*} (1430) ℓ ν_{ℓ}$ decay

Yin-Long Yang, Hai-Jiang Tian, Ya-Xiong Wang +4

In this paper, we calculate the semileptonic decays $D \to K_{0}^{*} (1430) ℓ ν_{ℓ}$ with $ℓ = (e, μ)$ induced by $c \to s ℓ ν_{ℓ}$ transition. For the key component, $D\to K_0…

hep-ph2024★ 2 cited

Quasi-two-body decays $B \to P f_{0} (500) \to P π^{+} π^{-}$ in the perturbative QCD approach

Jia-Wei Zhang, Bo-Yan Cui, Xing-Gang Wu +2

In this paper, we study the quasi-two-body decays $B \to P f_{0} (500) \to P π^{+} π^{-}$ [with $P = (π, K, η, η^{'})$ ] within framework of perturbative QCD (PQCD) factorization approach.…

Searching for $∣ V_{c d} ∣$ through the exclusive decay $D_{s}^{+} \to K^{0} e^{+} ν_{e}$ within QCD Sum Rules

Hai-Jiang Tian, Yin-Long Yang, Dan-Dan Hu +3

In this paper, we carry out an investigation into the semileptonic decays $D_{s}^{+} \to K^{0} ℓ^{+} ν_{ℓ}$ with $ℓ = (e, μ)$ by employing the QCD light-cone sum rules approach. The vect…

An improved light-cone harmonic oscillator model for the $ϕ$ -meson longitudinal leading-twist light-cone distribution amplitude

Dan-Dan Hu, Xing-Gang Wu, Long Zeng +2

In the present paper, we study the properties of $ϕ$ -meson longitudinal leading-twist light-cone distribution amplitude $ϕ_{2; ϕ}^{∥} (x, μ)$ by starting from a light-cone harmonic o…