%0 Journal Article %1 Collaboration2006X3872 %A Collaboration, Twqcd %A Chiu, Ting-Wai %A Hsieh, Tung-Han %D 2006 %J Physics Letters B %K tetraquark %N 2-3 %P 95--99 %R 10.1016/j.physletb.2007.01.019 %T X(3872) in lattice QCD with exact chiral symmetry %U http://dx.doi.org/10.1016/j.physletb.2007.01.019 %V 646 %X We investigate the mass spectrum of \$ 1^++ \$ exotic mesons with quark content \$ (¸q\cbar\qbar) \$, using molecular and diquark-antidiquark operators, in quenched lattice QCD with exact chiral symmetry. For the molecular operator \$ \(\qbar\gamma\_i\c)(\cbar\gamma\_5\q)- (\cbar\gamma\_i\q)(\qbar\gamma\_5\c) \ \$ and the diquark-antidiquark operator \$ \(\q^T C \c)(C \gamma\_5 \cbar^T)-(C \gi^T \cbar^T)(\q^T C \gamma\_5 \c) \ \$, both detect a resonance with mass around \$ 3890 30 \$ MeV in the limit \$ m\_q m\_u \$, which is naturally identified with \$ X(3872) \$. Further, heavier exotic meson resonance with \$ J^PC = 1^++ \$ is also detected, with quark content \$ (¸s\cbar\sbar) \$ around \$ 4100 50 \$ MeV.

@article{Collaboration2006X3872, abstract = {We investigate the mass spectrum of \$ 1^{++} \$ exotic mesons with quark content \$ (\c\q\cbar\qbar) \$, using molecular and diquark-antidiquark operators, in quenched lattice QCD with exact chiral symmetry. For the molecular operator \$ \{(\qbar\gamma\_i\c)(\cbar\gamma\_5\q)- (\cbar\gamma\_i\q)(\qbar\gamma\_5\c) \} \$ and the diquark-antidiquark operator \$ \{(\q^T C \gi \c)(\qbar C \gamma\_5 \cbar^T)-(\qbar C \gi^T \cbar^T)(\q^T C \gamma\_5 \c) \} \$, both detect a resonance with mass around \$ 3890 \pm 30 \$ MeV in the limit \$ m\_q \to m\_u \$, which is naturally identified with \$ X(3872) \$. Further, heavier exotic meson resonance with \$ J^{PC} = 1^{++} \$ is also detected, with quark content \$ (\c\s\cbar\sbar) \$ around \$ 4100 \pm 50 \$ MeV.}, added-at = {2019-02-23T22:09:48.000+0100}, archiveprefix = {arXiv}, author = {Collaboration, Twqcd and Chiu, Ting-Wai and Hsieh, Tung-Han}, biburl = {https://www.bibsonomy.org/bibtex/2c1cbe5ad6b6bc52f38ac6fcb0799125d/cmcneile}, citeulike-article-id = {13400115}, citeulike-linkout-0 = {http://arxiv.org/abs/hep-ph/0603207}, citeulike-linkout-1 = {http://arxiv.org/pdf/hep-ph/0603207}, citeulike-linkout-2 = {http://dx.doi.org/10.1016/j.physletb.2007.01.019}, day = 20, doi = {10.1016/j.physletb.2007.01.019}, eprint = {hep-ph/0603207}, interhash = {482b97864bc0b04d1f165106bf17a39d}, intrahash = {c1cbe5ad6b6bc52f38ac6fcb0799125d}, issn = {03702693}, journal = {Physics Letters B}, keywords = {tetraquark}, month = jul, number = {2-3}, pages = {95--99}, posted-at = {2014-10-17 18:01:46}, priority = {2}, timestamp = {2019-02-23T22:15:27.000+0100}, title = {{X(3872) in lattice QCD with exact chiral symmetry}}, url = {http://dx.doi.org/10.1016/j.physletb.2007.01.019}, volume = 646, year = 2006 }