The finite volume spectrum of excited states from lattice QCD simulations

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 \(390\) M...

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Bibliographic Details
Published in:arXiv.org 2014-01
Main Authors: Bulava, John, Fahy, Brendan, You-Cyuan Jhang, Lenkner, David, Morningstar, Colin J, Foley, Justin, Juge, Keisuke J, Wong, Chik Him
Format: Article
Language:English
Subjects:
Algorithms
Computer simulation
Correlation analysis
Excitation spectra
Lattices
Mesons
Operators
Pions
Quantum chromodynamics
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Summary: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.
ISSN:2331-8422