Lattice QCD with a twisted mass term and a strange quark

Abstract

There are three quarks with masses at or below the characteristic scale of QCD dynamics: up, down and strange. However, twisted mass lattice QCD relies on quark doublets. Various options for including three quark flavors within the twisted mass approach are explored by studying the kaon masses, both analytically (through chiral Lagrangians) and numerically (through lattice simulations). Advantages and disadvantages are revealed for each ``strange and twisted'' option.

3 pages, 1 figure. Presented at the IVth International Conference on Quarks and Nuclear Physics, Madrid, Spain, 5-10 June 2006

References in corpus (9)

• Chirally improving Wilson fermions - I. O(a) improvement
• Twisted-mass lattice QCD with mass non-degenerate quarks
• Chiral perturbation theory for the Wilson lattice action
• Chiral perturbation theory at O(a^2) for lattice QCD
• Simulations with different lattice Dirac operators for valence and sea quarks
• Twisted mass QCD and lattice approaches to the $\Delta I=1/2$ rule
• Spectrum of quenched twisted mass lattice QCD at maximal twist
• Strange quarks in quenched twisted mass lattice QCD
• Twisted mass lattice QCD with non-degenerate quark masses

Cited by in corpus (5)

• Baryon spectrum with $N_f=2+1+1$ twisted mass fermions
• Light baryon masses with dynamical twisted mass fermions
• The low-lying baryon spectrum with two dynamical twisted mass fermions
• Strange and charm baryon masses with two flavors of dynamical twisted mass fermions
• Charmless chiral perturbation theory for N_f=2+1+1 twisted mass lattice QCD