The Nature of the X(2175)

Details The Nature of the X(2175) The Nature of the X(2175)

2009-05-20

arxiv.org/abs/0905.3302v1

Acta Phys.Polon.Supp.2:431,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

Acta Physica Polonica style, 6 pages, 2 figures (4 plots); plenary talk given by S. Coito at Workshop "Excited QCD", Zakopane,

Scientific paper

We study the puzzling vector meson X(2175) in a multichannel generalisation of the Resonance-Spectrum-Expansion model. Besides the usual P-wave pseudoscalar-pseudoscalar, pseudoscalar-vector, and vector-vector channels that couple to mesons with vector quantum numbers, we also include the important S-wave vector-scalar, pseudoscalar-axialvector and vector-axialvector channels, including the observed $\phi$(1020)$f_0$(980) decay mode. The strong coupling to nearby S-wave channels originates dynamically generated poles, two of which come out close to the energy region of the X(2175), viz. at (2.037-i0.170) GeV and (2.382-i0.20) GeV. Further improvements are proposed.

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