2016/03/31 by Krzysztof Cichy, Martin Kalinowski, Marc Wagner
Mathematics · Physics and Astronomy · #Extrapolation #High-Energy Particle Collisions Research #Lattice QCD #Mathematics #Meson #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quark #Statistics #hep-ex #hep-lat #hep-ph
paper · pdf · doi:10.1103/physrevd.94.094503
published as Phys. Rev. D 94, 094503 (2016) · 54 pages, 32 figures; significantly extended discussion on several aspects; matches published version
openalex created_date 2016/06/24 · openalex publication_date 2016/11/16 · arxiv created 2016/11/22 · arxiv updated 2016/11/23 · openalex updated_date 2026/08/05
We compute masses of D meson, Ds meson, and charmonium states using Nf=2+1+1 Wilson twisted mass lattice QCD. All results are extrapolated to physical light quark masses, to physical strange and charm quark masses, and to the continuum. Our analysis includes states with spin J=0, 1, 2, parity P=\ensuremath-,+, and in case of charmonium also charge conjugation C=\ensuremath-,+. Computations are based on a large set of quark-antiquark meson creation operators. We investigate and quantify all sources of systematic errors, including fitting range uncertainties, finite volume effects, isospin breaking effects, and the choice of the fitting ansatz for the combined chiral and continuum extrapolation such that the resulting meson masses can be compared directly and in a meaningful way to experimental results. Within combined statistical and systematic errors, which are between below 2 per mille and 3%, our results agree with available experimental results for most of the states. In the few cases where we observe discrepancies, we discuss possible reasons.