The I^G J^{PC}=1^- 1^{-+} Tetraquark States

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dc.creatorChen, Hua-Xing
dc.creatorHosaka, Atsushi
dc.creatorZhu, Shi-Lin
dc.date2008-06-12
dc.date2008-08-13
dc.date.accessioned2026-07-07T12:14:43Z
dc.date.available2026-07-07T12:14:43Z
dc.descriptionWe study the tetraquark states with I^G J^{PC}=1^- 1^{-+} in the QCD sum rule. After exhausting all possible flavor structures, we analyses both the SVZ and finite energy sum rules. Both approaches lead to a mass around 1.6 GeV for the state with the quark contents q q q_bar q_bar, and around 2.0 GeV for the state with the quark contents q s q_bar s_bar. The flavor structure 3_bar * 6_bar + 6 * 3 is preferred. Our analysis strongly indicates that both pi1(1600) and pi1(2015) are also compatible with the exotic tetraquark interpretation, which are sometimes labeled as candidates of the 1^{-+} hybrid mesons. Moreover one of their dominant decay modes is a pair of axial-vector and pseudoscalar mesons such as b1(1235) pi, which is sometimes considered as the characteristic decay mode of the hybrid mesons.
dc.description18 pages, 14 figures, revised version to appear in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/0806.1998
dc.identifierhttp://arxiv.org/abs/0806.1998
dc.identifierPhys.Rev.D78:054017,2008
dc.identifierdoi:10.1103/PhysRevD.78.054017
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/211290
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.subjectHigh Energy Physics - Lattice
dc.subjectNuclear Experiment
dc.subjectNuclear Theory
dc.titleThe I^G J^{PC}=1^- 1^{-+} Tetraquark States
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