X(3872) and Other Possible Heavy Molecular States

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dc.creatorLiu, Xiang
dc.creatorLuo, Zhi-Gang
dc.creatorLiu, Yan-Rui
dc.creatorZhu, Shi-Lin
dc.date2008-08-01
dc.date2008-08-18
dc.date.accessioned2026-07-07T13:17:38Z
dc.date.available2026-07-07T13:17:38Z
dc.descriptionWe perform a systematic study of the possible molecular states composed of a pair of heavy mesons such as $D\bar D$, $D^\ast\bar D$, $D^\ast \bar D^\ast$ in the framework of the meson exchange model. The exchanged mesons include the pseudoscalar, scalar and vector mesons. Through our investigation, we find that (1) the structure X(3764) is not a molecular state; (2) There exists strong attraction in the range $r < 1$ fm for the $D^*\bar D^*$ system with $J=0, 1$. If future experiments confirm $Z^+(4051)$ as a loosely bound molecular state, its quantum number is probably $J^{P}=0^+$. Its partner state $Φ^{**0}$ may be searched for in the $π^0χ_{c1}$ channel; (3) The vector meson exchange provides strong attraction in the $D^\ast \bar D$ channel together with the pion exchange. A bound state solution exists with a reasonable cutoff parameter $Λ\sim 1.4$ GeV. X(3872) may be accommodated as a molecular state dynamically although drawing a very definite conclusion needs further investigation; (4) The $B^\ast \bar B$ molecular state exists.
dc.description21 pages, 17 tables, 11 figures. Typos corrected
dc.identifierhttps://arxiv.org/abs/0808.0073
dc.identifierhttp://arxiv.org/abs/0808.0073
dc.identifierEur.Phys.J.C61:411-428,2009
dc.identifierdoi:10.1140/epjc/s10052-009-1020-4
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/231178
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.subjectNuclear Theory
dc.titleX(3872) and Other Possible Heavy Molecular States
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