2008/08/31 by Hua-Xing Chen, Atsushi Hosaka, Shi-Lin Zhu
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.78.117502
published as Phys.Rev.D78:117502,2008 · 4 pages, 4 figures, revised version to appear in Phys. Rev. D
arxiv created 2008/11/13 · openalex publication_date 2008/12/09 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We study the tetraquark state with IGJPC=0+1^\ensuremath-+ in the QCD sum rule. We exhaust all possible flavor structures by using a diquark-antidiquark construction and find that the flavor structure (3\ensuremath\bigotimes6)\ensuremath\bigoplus(6\ensuremath\bigotimes3) is preferred. There are altogether four independent currents which have the quark contents qsqs. By using both the Shifman-Vainshtein-Zakharov sum rule and the finite energy sum rule, these currents lead to mass estimates around 1.8--2.1 GeV, where the uncertainty is due to the mixing of two single currents. Its possible decay modes are S-wave b1(1235)\ensuremathη and b1(1235)\ensuremathη^\ensuremath', and P-wave KK, \ensuremathη\ensuremathη, \ensuremathη\ensuremathη^\ensuremath', and \ensuremathη^\ensuremath'\ensuremathη^\ensuremath', etc. The decay width is around 150 MeV through a rough estimation.