%0 Journal Article %1 Ikeda2014Charmed %A Ikeda, Yoichi %A Charron, Bruno %A Aoki, Sinya %A Doi, Takumi %A Hatsuda, Tetsuo %A Inoue, Takashi %A Ishii, Noriyoshi %A Murano, Keiko %A Nemura, Hidekatsu %A Sasaki, Kenji %D 2014 %J Physics Letters B %K tetraquark %P 85--90 %R 10.1016/j.physletb.2014.01.002 %T Charmed Tetraquarks Tcc and Tcs from Dynamical Lattice QCD Simulations %U http://dx.doi.org/10.1016/j.physletb.2014.01.002 %V 729 %X Charmed tetraquarks \$T\_cc=(ccud)\$ and \$T\_cs=(csud)\$ are studied through the S-wave meson-meson interactions, \$D\$-\$D\$, \$K\$-\$D\$, \$D\$-\$D^*\$ and \$K\$-\$D^*\$, on the basis of the (2+1)-flavor lattice QCD simulations with the pion mass \$m\_\pi \$410, 570 and 700 MeV. For the charm quark, the relativistic heavy quark action is employed to treat its dynamics on the lattice. Using the HAL QCD method, we extract the S-wave potentials in lattice QCD simulations, from which the meson-meson scattering phase shifts are calculated. The phase shifts in the isospin triplet (\$I\$=1) channels indicate repulsive interactions, while those in the \$I=0\$ channels suggest attraction, growing as \$m\_\pi\$ decreases. This is particularly prominent in the \$T\_cc (J^P=1^+,I=0)\$ channel, though neither bound state nor resonance are found in the range \$m\_\pi =410-700\$ MeV. We make a qualitative comparison of our results with the phenomenological diquark picture.

@article{Ikeda2014Charmed, abstract = {Charmed tetraquarks \$T\_{cc}=(cc\bar{u}\bar{d})\$ and \$T\_{cs}=(cs\bar{u}\bar{d})\$ are studied through the S-wave meson-meson interactions, \$D\$-\$D\$, \$\bar{K}\$-\$D\$, \$D\$-\$D^{*}\$ and \$\bar{K}\$-\$D^{*}\$, on the basis of the (2+1)-flavor lattice QCD simulations with the pion mass \$m\_{\pi} \simeq \$410, 570 and 700 MeV. For the charm quark, the relativistic heavy quark action is employed to treat its dynamics on the lattice. Using the HAL QCD method, we extract the S-wave potentials in lattice QCD simulations, from which the meson-meson scattering phase shifts are calculated. The phase shifts in the isospin triplet (\$I\$=1) channels indicate repulsive interactions, while those in the \$I=0\$ channels suggest attraction, growing as \$m\_{\pi}\$ decreases. This is particularly prominent in the \$T\_{cc} (J^P=1^+,I=0)\$ channel, though neither bound state nor resonance are found in the range \$m\_{\pi} =410-700\$ MeV. We make a qualitative comparison of our results with the phenomenological diquark picture.}, added-at = {2019-02-23T22:09:48.000+0100}, archiveprefix = {arXiv}, author = {Ikeda, Yoichi and Charron, Bruno and Aoki, Sinya and Doi, Takumi and Hatsuda, Tetsuo and Inoue, Takashi and Ishii, Noriyoshi and Murano, Keiko and Nemura, Hidekatsu and Sasaki, Kenji}, biburl = {https://www.bibsonomy.org/bibtex/24c159d03e29685ad45ee44511044a2e3/cmcneile}, citeulike-article-id = {12802715}, citeulike-linkout-0 = {http://arxiv.org/abs/1311.6214}, citeulike-linkout-1 = {http://arxiv.org/pdf/1311.6214}, citeulike-linkout-2 = {http://dx.doi.org/10.1016/j.physletb.2014.01.002}, day = 10, doi = {10.1016/j.physletb.2014.01.002}, eprint = {1311.6214}, interhash = {7dcbce5f5e9d1fdd52700ff94a5c3423}, intrahash = {4c159d03e29685ad45ee44511044a2e3}, issn = {03702693}, journal = {Physics Letters B}, keywords = {tetraquark}, month = jan, pages = {85--90}, posted-at = {2014-08-20 12:04:41}, priority = {2}, timestamp = {2019-02-23T22:15:27.000+0100}, title = {{Charmed Tetraquarks Tcc and Tcs from Dynamical Lattice QCD Simulations}}, url = {http://dx.doi.org/10.1016/j.physletb.2014.01.002}, volume = 729, year = 2014 }