Extracting the rho resonance from lattice QCD simulations at small quark masses

preprint2008arXivOpen access

Abstract

Using established relations between the scattering matrix in infinite volume and the two-particle spectrum in a periodic box, we compute the mass and width of the rho meson from simulations of N_f=2 flavors of dynamical clover fermions at small pion masses 2 m_pi < m_rho.

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