Meson and Baryon dispersion relations with Brillouin fermions

Abstract

We study the dispersion relations of mesons and baryons built from Brillouin quarks on one N_f=2 gauge ensemble provided by QCDSF. For quark masses up to the physical strange quark mass, there is hardly any improvement over the Wilson discretization, if either action is link-smeared and tree-level clover improved. For quark masses in the range of the physical charm quark mass, the Brillouin action still shows a perfect relativistic behavior, while the Wilson action induces severe cut-off effects. As an application we determine the masses of the Ω_c^0, Ω_{cc}^+ and Ω_{ccc}^{++} baryons on that ensemble.

16 pages, 9 figures, 4 tables; v2: one Reference added, matches published version

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Cited by in corpus (35)

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• Baryon spectrum with $N_f=2+1+1$ twisted mass fermions
• Charmed baryons at the physical point in 2+1 flavor lattice QCD
• Quantum Numbers of Recently Discovered ${\Omega }_c^0$ Baryons from Lattice QCD
• Charmed baryon spectroscopy and light flavour symmetry from lattice QCD
• Spectroscopy of doubly-charmed baryons from lattice QCD
• Low-lying baryon masses using $N_f=2$ twisted mass clover-improved fermions directly at the physical point
• Spectroscopy of triply-charmed baryons from lattice QCD
• Masses of doubly heavy-quark baryons in an extended chromomagnetic model
• Charmed baryon spectrum from lattice QCD near the physical point
• Nucleon Excited States in N${}_f$=2 lattice QCD
• Pentaquark states with the $QQQq\bar{q}$ configuration in a simple model
• Lattice QCD study of the elastic and transition form factors of charmed baryons
• Varieties and properties of central-branch Wilson fermions
• Triply heavy baryon spectroscopy revisited
• On the suitability of the Brillouin action as a kernel to the overlap procedure
• Lattice fermions as spectral graphs
• Observation of Cabibbo-Suppressed Two-Body Hadronic Decays and Precision Mass Measurement of the ${\Omega }_c^0$ Baryon
• $O(a^2)$-improved actions for heavy quarks and scaling studies on quenched lattices
• Precise study of triply charmed baryons ${\Omega }_{ccc}$
• Equivalence of lattice operators and graph matrices
• New conjecture on exact Dirac zero-modes of lattice fermions
• Spin-taste representation of minimally doubled fermions from first principles: Karsten-Wilczek fermions
• Minimal-doubling and single-Weyl Hamiltonians
• Quark Flavor Physics Review
• Mass spectrum, magnetic moments and Regge trajectories of ${\Omega }_{ccb}$ and ${\Omega }_{cbb}$ baryons in the nonrelativistic quark--diquark model
• Spectroscopy of doubly and triply-charmed baryons from lattice QCD
• First numerical experiences with overlap fermions based on the Brillouin kernel
• Hadron spectra and Delta_{mix} from overlap quarks on a HISQ sea
• Lattice QCD: Flavor Physics and Spectroscopy
• Three Dirac operators on two architectures with one piece of code and no hassle
• Scaling study of an improved fermion action on quenched lattices
• Lattice fermion formulation via Physics-Informed Neural Networks: Ginsparg-Wilson relation and Overlap fermions