X(3872): charmonium or molecule?
- Institute of Theoretical and Experimental Physics, 117218, B.Cheremushkinskaya 25, Moscow (Russian Federation)
A theoretical analysis of the recent experimental data from the Belle and BABAR Collaborations on the charmonium state X(3872) is performed. The analysis takes into account the proximity of an S-wave mesonic threshold and a possible presence of molecule component in the resonance wave function, finite width of the molecule constituents, and a possible interference in the final state. In particular, a model-independent approach is formulated, based on the Flatte parametrisation of near-threshold observables as well as on the Weinberg analysis of the nature of weakly bound systems generalised to the case of unstable constituents. Conclusion is made that the X(3872) is generated dynamically by a strong coupling of the bare {chi}{sub c1} charmonium to the DD-bar* hadronic channel, with a large admixture of the DD-bar* molecular component.
- OSTI ID:
- 21513332
- Journal Information:
- AIP Conference Proceedings, Vol. 1343, Issue 1; Conference: QCHS 9: 9. international conference on quark confinement and the hadron spectrum, Madrid (Spain), 30 Aug - 3 Sep 2010; Other Information: DOI: 10.1063/1.3575040; (c) 2011 American Institute of Physics; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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