Twisted mass chiral perturbation theory for 2+1+1 quark flavours
arXiv:1103.1494 · doi:10.1007/JHEP04(2011)116
Abstract
We present results for the masses of pseudoscalar mesons in twisted mass lattice QCD with a degenerate doublet of u and d quarks and a non-degenerate doublet of s and c quarks in the framework of next-to-leading order chiral perturbation theory, including lattice effects up to O(a^2). The masses depend on the two twist angles for the light and heavy sectors. For maximal twist in both sectors, O(a)-improvement is explicitly exhibited. The mixing of flavour-neutral mesons is also discussed, and results in the literature for the case of degenerate s and c quarks are corrected.
arXiv commentLaTeX2e, 12 pages, corrected typos
References in corpus (14)
- Chirally improving Wilson fermions - I. O(a) improvement
- Light hadrons from lattice QCD with light (u,d), strange and charm dynamical quarks
- Chirally improving Wilson fermions II. Four-quark operators
- Light Meson Physics from Maximally Twisted Mass Lattice QCD
- Twisted-mass lattice QCD with mass non-degenerate quarks
- Twisted mass lattice QCD
- Computing K and D meson masses with N_f = 2+1+1 twisted mass lattice QCD
- Pion mass splitting and phase structure in Twisted Mass QCD
- On the phase structure of twisted mass lattice QCD
- Chiral perturbation theory for lattice QCD with a twisted mass term
- Numerical simulation of QCD with u, d, s and c quarks in the twisted-mass Wilson formulation
- Numerical simulations with two flavours of twisted-mass Wilson quarks and DBW2 gauge action
- Twisted mass Lattice QCD
- Twisted mass lattice QCD with non-degenerate quark masses