Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2006-01-30
Phys.Rev.D74:014507,2006
Physics
High Energy Physics
High Energy Physics - Lattice
37 pages, 12 figures, accepted for publication
Scientific paper
10.1103/PhysRevD.74.014507
Two twisted doublets, one containing the up and down quarks and the other containing the strange quark with an SU(2)-flavor partner, are used for studies in the meson sector. The relevant chiral perturbation theory is presented, and quenched QCD simulations (where the partner of the strange quark is not active) are performed. Pseudoscalar meson masses and decay constants are computed; the vector and scalar mesons are also discussed. A comparison is made to the case of an untwisted strange quark, and some effects due to quenching, discretization, and the definition of maximal twist are explored.
Abdel-Rehim Abdou M.
Lewis Randy
Woloshyn Richard M.
Wu Jackson M. S.
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