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High Energy Physics - Lattice

arXiv:1510.07862 (hep-lat)
[Submitted on 27 Oct 2015]

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

Authors:Krzysztof Cichy, Martin Kalinowski, Marc Wagner
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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.
Comments: 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
Subjects: High Energy Physics - Lattice (hep-lat); High Energy Physics - Experiment (hep-ex); High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:1510.07862 [hep-lat]
  (or arXiv:1510.07862v1 [hep-lat] for this version)
  https://doi.org/10.48550/arXiv.1510.07862
Journal reference: PoS(LATTICE 2015)093

Submission history

From: Krzysztof Cichy [view email]
[v1] Tue, 27 Oct 2015 11:10:02 UTC (75 KB)
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