Strange quarks in quenched twisted mass lattice QCD

Abstract

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.

arXiv comment37 pages, 12 figures, accepted for publication

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Cited by in corpus (21)

• Baryon spectrum with $N_f=2+1+1$ twisted mass fermions
• Pseudoscalar decay constants of kaon and D-mesons from Nf=2 twisted mass Lattice QCD
• Light baryon masses with dynamical twisted mass fermions
• The low-lying baryon spectrum with two dynamical twisted mass fermions
• Average up/down, strange and charm quark masses with Nf=2 twisted mass lattice QCD
• Computing K and D meson masses with N_f = 2+1+1 twisted mass lattice QCD
• Meson masses and decay constants from unquenched lattice QCD
• Strange and charm baryon masses with two flavors of dynamical twisted mass fermions
• Numerical simulation of QCD with u, d, s and c quarks in the twisted-mass Wilson formulation
• Radiative transitions in charmonium from $N_f=2$ twisted mass lattice QCD
• Flavour symmetry restoration and kaon weak matrix elements in quenched twisted mass QCD
• Oscillation frequency of B and B mesons in a QCD potential model with relativistic effect
• Light quark masses and pseudoscalar decay constants from Nf=2 Lattice QCD with twisted mass fermions
• Quenched $B_K$-parameter from Osterwalder-Seiler tmQCD quarks and mass-splitting discretization effects
• Exploring the meson spectrum with twisted mass lattice QCD
• A Lattice Study of the Two-photon Decay Widths for Scalar and Pseudo-scalar Charmonium
• Charmless chiral perturbation theory for N_f=2+1+1 twisted mass lattice QCD
• Evolutionary Fitting Methods for the Extraction of Mass Spectra in Lattice Field Theory
• Twisted mass lattice QCD with non-degenerate quark masses
• Lattice QCD with a twisted mass term and a strange quark
• Using evolutionary algorithms to extract field theory mass spectra