2011/03/14 by Gernot Münster, Tobias Sudmann
Physics and Astronomy · #High-Energy Particle Collisions Research #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #hep-lat #hep-ph
paper · pdf · doi:10.1007/jhep04(2011)116
published as JHEP 1104:116,2011 · LaTeX2e, 12 pages, corrected typos
arxiv created 2011/03/14 · openalex publication_date 2011/04/01 · arxiv updated 2011/05/09 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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(a2). 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.