• DOI:10.1103/PhysRevD.96.033002
• Corpus ID: 119410795

Study of $\mathbf{\boldsymbol{D \rightarrow a_0 (980) e^+ \nu_e}}$ decay in the light-cone sum rules approach

@article{Cheng2017StudyO,
  title={Study of \$\mathbf\{\boldsymbol\{D \rightarrow a\_0 (980) e^+ \nu\_e\}\}\$ decay in the light-cone sum rules approach},
  author={Xiao-Dong Cheng and Hai-bo Li and Bin Wei and Yu-Guo Xu and Mao-Zhi Yang},
  journal={Physical Review D},
  year={2017},
  volume={96},
  pages={033002}
}

• Xiao-Dong Cheng, Hai-bo Li, +2 authors Mao-Zhi Yang
• Published 4 June 2017
• Physics
• Physical Review D

Within the QCD light-cone sum rule (LCSR) approach, we investigate the transition form factors of $D\rightarrow a_0(980)$ up to the twist-3 light-cone distribution amplitudes (LCDAs) of the scalar meson $a_0(980)$ in the two-quark picture. Using these form factors, we calculate the differential decay widths and branching ratios of the $D\rightarrow a_0(980) e^+ \nu_e$ semileptonic decays. We obtain ${\mathcal B}(D^0\rightarrow a_0^- (980) e^+ \nu_e)=(4.08^{+1.37}_{-1.22})\times 10^{-4}$ and ${\mathcal B}(D^+\rightarrow a_0^0 (980) e^+ \nu_e)=(5.40^{+1.78}_{-1.59})\times 10^{-4}$. The results are sensitive to the $a_0(980)$ inner structure. These decays can be searched for at BESIII experiment, and any experimental observations will be useful to identify internal quark contents of the $a_0(980)$ meson, which will shed light on understanding theoretical models.