2017/06/06 by Xiao-Dong Cheng, Hai-Bo Li, Bin Wei +2
Mathematics · Physics and Astronomy · #Geometry #High-Energy Particle Collisions Research #Light cone #Mathematics #Meson #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quark #Scalar (mathematics) #hep-ph
paper · pdf · doi:10.1103/physrevd.96.033002
published as Phys. Rev. D 96, 033002 (2017) · 19 pages,5 figures
arxiv created 2017/06/06 · openalex created_date 2017/06/15 · openalex publication_date 2017/08/23 · arxiv updated 2017/08/25 · openalex updated_date 2026/08/05
Within the QCD light-cone sum rule (LCSR) approach, we investigate the transition form factors of D\ensuremath→a0(980) up to the twist-3 light-cone distribution amplitudes (LCDAs) of the scalar meson a0(980) in the two-quark picture. Using these form factors, we calculate the differential decay widths and branching ratios of the D\ensuremath→a0(980)e+\ensuremathνe semileptonic decays. We obtain B(D0\ensuremath→a0^\ensuremath-(980)e+\ensuremathνe)=(4.08_\ensuremath-1.22+1.37)\ifmmode×\else\texttimes\fi10^\ensuremath-4 and B(D+\ensuremath→a00(980)e+\ensuremathνe)=(5.40_\ensuremath-1.59+1.78)\ifmmode×\else\texttimes\fi10^\ensuremath-4. The results are sensitive to the a0(980) inner structure. These decays can be searched for at the BESIII experiment, and any experimental observations will be useful to identify internal quark contents of the a0(980) meson, which will shed light on understanding theoretical models.