# DK I = 0, $$ D\overline{K} $$ I = 0, 1 scattering and the $$ {D}_{s0}^{\ast } $$(2317) from lattice QCD

@article{Cheung2021DKI, title={DK I = 0, \$\$ D\overline\{K\} \$\$ I = 0, 1 scattering and the \$\$ \{D\}\_\{s0\}^\{\ast \} \$\$(2317) from lattice QCD}, author={Gavin K. C. Cheung and Christopher E. Thomas and David J. Wilson and Graham Moir and Michael Peardon and Sin{\'e}ad M. Ryan}, journal={arXiv: High Energy Physics - Lattice}, year={2021} }

Elastic scattering amplitudes for $I=0$ $DK$ and $I=0,1$ $D\bar{K}$ are computed in $S$, $P$ and $D$ partial waves using lattice QCD with light-quark masses corresponding to $m_\pi = 239$ MeV and $m_\pi = 391$ MeV. The $S$-waves contain interesting features including a near-threshold $J^P=0^+$ bound state in $I=0$ $DK$, corresponding to the $D_{s0}^\ast(2317)$, with an effect that is clearly visible above threshold, and suggestions of a $0^+$ virtual bound state in $I=0$ $D\bar{K}$. The $S…

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Where Is the Lightest Charmed Scalar Meson?

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It is shown that an analysis of data consistent with chiral symmetry, unitarity, and analyticity is mandatory in order to extract the properties of the ground-state scalar mesons in the singly heavy sector correctly, in analogy to the light scalar Mesons f_{0}(500) and K{0}^{*}(700).

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