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arXiv · 1401.2382

The finite volume spectrum of excited states from lattice QCD simulations

John Bulava·Brendan Fahy·You-Cyuan Jhang·David Lenkner·Colin J. Morningstar·Justin Foley·Keisuke J. Juge·Chik Him Wong
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Abstract

We present results for the spectrum of excited mesons obtained from temporal correlations of spatially-extended single-hadron and multi-hadron operators computed in lattice QCD. The stochastic LapH algorithm is implemented on anisotropic, dynamical lattices for isovectors for pions of mass $390$ MeV. A large correlation matrix with single-particle and two-particle probe operators is diagonalized to identify resonances. The masses of excited states in the $I=1, S=0, T_{1u}^+$ channel as well as the mixing of single and multi-particle probe operators are presented.

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John Bulava, Brendan Fahy, You-Cyuan Jhang, David Lenkner, Colin J. Morningstar, Justin Foley, Keisuke J. Juge, Chik Him Wong. 2014-01-10. The finite volume spectrum of excited states from lattice QCD simulations. https://arxiv.org/abs/1401.2382

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