Mass spectra of mesons containing charm quarks - continuum limit results from twisted mass fermions

Abstract

We present results from an ongoing computation of masses of $D$ mesons, $D_s$ mesons and charmonium, including both ground states and several parity and angular momentum excitations. We employ 2+1+1 flavours of dynamical maximally twisted mass fermions at three lattice spacings and three $u/d$ quark masses at each lattice spacing. We consider different combinations of valence quark discretizations, with either identical or opposite signs in front of the twisted mass terms. In the end, our setup allows for a good control of different kinds of systematic effects, in particular the quark mass dependence of the resulting meson masses and cut-off effects. We obtain good agreement with experiment for the majority of states and we discuss improvements that will be made to finalize the analysis.

7 pages, 4 figures, Proceedings of the 33rd International Symposium on Lattice Field Theory (Lattice 2015), 14-18 July 2015, Kobe International Conference Center, Kobe, Japan

References in corpus (8)

• Excited and exotic charmonium spectroscopy from lattice QCD
• Toward the excited meson spectrum of dynamical QCD
• Light hadrons from lattice QCD with light (u,d), strange and charm dynamical quarks
• $D_s$ mesons with $DK$ and $D^{\ast }K$ scattering near threshold
• Masses of $D$ mesons, $D_s$ mesons and charmonium states from twisted mass lattice QCD
• Lattice study on ${\eta }_{c2}$ and X(3872)
• Radial and orbital excitation energies of charmonium
• Flavored tetraquark spectroscopy

Cited by in corpus (3)

• Properties of Excited Charm and Charm-Strange Mesons
• Study of open-charm $0^{+}$ states in unitarized chiral effective theory with one-loop potentials
• Continuum limit of the $D$ meson, $D_s$ meson and charmonium spectrum from $N_f=2+1+1$ twisted mass lattice QCD