Chiral Extrapolations and Exotic Meson Spectrum

Abstract

We examine the chiral corrections to exotic meson masses calculated in lattice QCD. In particular, we ask whether the non-linear chiral behavior at small quark masses, which has been found in other hadronic systems, could lead to large corrections to the predictions of exotic meson masses based on linear extrapolations to the chiral limit. We find that our present understanding of exotic meson decay dynamics suggests that open channels may not make a significant contribution to such non-linearities whereas the virtual, closed channels may be important.

13 pagers, 2 figures

References in corpus (3)

• Incorporating Chiral Symmetry and Heavy Quark Theory in Extrapolations of Octet Baryon Charge Radii
• Role of Photoproduction in Exotic Meson Searches
• Charge exchange ${\rho }^0{\pi }^{+}$ photoproduction and implications for searches of exotic meson

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• Final State Interactions in Decays of the Exotic ${\pi }_1$ Meson
• Light-Quark FLIC Fermion Simulations of the $1^{-+}$ Exotic Meson