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Rethinking the X(3872)

Burns, T.J.

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Authors

T.J. Burns



Abstract

The BaBar analysis which favours 2−+ quantum numbers for the X(3872) implies that it may be none other than the 1 1D2 charmonia state. In that case the isospin breaking in closed flavour modes may be the result of re‐scattering from open flavour. However, the observed production cross section in proton‐antiproton collisions is much larger than expectations, while the mass of the state, compared to the predictions of a string model, is too large. The 1D2 assignment would imply a 3D2 partner nearby in mass, which may be the X(3875). In the tetraquark interpretation the 2−+ assignment implies a rich spectrum of partner states, although the X(3872) may be among the few which are narrow enough to be observable. This talk is based in part on ref. [1].

Citation

Burns, T. (2011, May). Rethinking the X(3872)

Presentation Conference Type Conference Paper (published)
Publication Date May 23, 2011
Deposit Date May 29, 2013
Publicly Available Date Apr 7, 2014
Volume 1343
Pages 397-399
Series Title AIP conference proceedings.
Series ISSN 0094-243X,1551-7616
Book Title The IX international conference on quark confinement and the hadron spectrum - QCHS IX.
DOI https://doi.org/10.1063/1.3575041
Keywords X(3872), Charmonium, Tetraquarks.
Public URL https://durham-repository.worktribe.com/output/1155752

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Copyright Statement
© 2011 American Institute of Physics. This paper may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following paper appeared in AIP Conference Proceedings 1343, 397 (2011); doi: 10.1063/1.3575041 and may be found at http://scitation.aip.org/content/aip/proceeding/aipcp/10.1063/1.3575041




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