Exploring the meson spectrum with twisted mass lattice QCD

Details Exploring the meson spectrum with twisted mass lattice QCD Exploring the meson spectrum with twisted mass lattice QCD

2008-03-28

arxiv.org/abs/0803.4141v2

Phys.Rev.D78:074502,2008

Physics

High Energy Physics

High Energy Physics - Lattice

23 pages, 10 figures, published version

Scientific paper

10.1103/PhysRevD.78.074502

Numerical simulations with access to all possible meson quantum numbers, J^{PC}, are presented using two-flavor (up and down) quenched twisted mass lattice QCD with three different lattice spacings and four different quark masses. The connection between the quantum numbers (P and C) and the symmetries of the twisted mass action are discussed, as is the connection between J and the lattice rotation group, for the 400 operators used in this study. Curve fitting of this large data set is accomplished by using an evolutionary fitting algorithm. Results are reported for conventional and exotic quantum numbers.

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