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Studying $\kappa$ meson with a MILC fine lattice
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abstract
Using the lattice simulations in the Asqtad-improved staggered fermion formulation we compute the point-to-point $\kappa$ correlators, which are analyzed by the rooted staggered chiral perturbation theory (rS$\chi$PT). After chiral extrapolation, we secure the physical $\kappa$ mass with $835\pm93$ MeV, which is in agreement with the BES experimental results. The computations are performed using a MILC 2+1 flavor fine gauge configuration at a lattice spacing of $a \approx 0.09$ fm.
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Cited by 1 Pith paper
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Revisiting Roy-Steiner-equation analysis of pion-kaon scattering from lattice QCD data
A Roy-Steiner dispersive analysis of lattice QCD pion-kaon data at m_pi = 391 MeV finds the κ resonance at (966-i198) MeV, a broad resonance rather than the virtual-state pole reported in K-matrix analyses.
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