Light-Quark FLIC Fermion Simulations of the $1^{-+}$ Exotic Meson

J. N. Hedditch; W. Kamleh; B. G. Lasscock; D. B. Leinweber; A. G. Williams; J. M. Zanotti

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Light-Quark FLIC Fermion Simulations of the $1^{-+}$ Exotic Meson

J. N. Hedditch·W. Kamleh·B. G. Lasscock·D. B. Leinweber·A. G. Williams·J. M. Zanotti

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Abstract

We investigate the mass of the $1^{-+}$ exotic meson, created with hybrid interpolating fields. Access to light quark masses approaching 25 MeV is facilitated by the use of the Fat-Link Irrelevant Clover (FLIC) fermion action, and large ($20^3 \times 40$) lattices. Our results indicate that the $1^{-+}$ exotic exhibits significant curvature close to the chiral limit, and yield a $1^{-+}$ mass in agreement with the $π_1 (1600)$ candidate and exclusive of the $π_1 (1400)$.

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J. N. Hedditch, W. Kamleh, B. G. Lasscock, D. B. Leinweber, A. G. Williams, J. M. Zanotti. 2005-10-26. Light-Quark FLIC Fermion Simulations of the $1^{-+}$ Exotic Meson. https://arxiv.org/abs/hep-lat/0510103

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