1,370 research outputs found
Domain-Wall Fermion with Symmetry
We present the domain-wall fermion operator which is reflection symmetric in
the fifth dimension, with the approximate sign function of the
effective 4-dimensional Dirac operator satisfying the bound for , where is the maximum deviation of the
Zolotarev optimal rational polynomial of for , with degrees for , and for .Comment: This work is dedicated to late Professor James S. Bal
Mass Spectra of and in Lattice QCD with Domain-Wall Quarks
We perform hybrid Monte Carlo simulation of lattice QCD with
optimal domain-wall quarks on the lattice with lattice
spacing fm, and generate a gauge ensemble with physical and
quarks, and pion mass MeV. Using 2-quark (meson) and 3-quark
(baryon) interpolating operators, the mass spectra of the lowest-lying states
containing and quarks ( and ) are extracted
\cite{Chen:2017kxr}, which turn out in good agreement with the high energy
experimental values, together with the predictions of the charmed baryons which
have not been observed in experiments. For the five new narrow
states observed by the LHCb Collaboration \cite{Aaij:2017nav}, the lowest-lying
agrees with our predicted mass MeV of the
lowest-lying with . This implies that the of
is .Comment: 8 pages, 3 figures, talk presented at the 35th International
Symposium on Lattice Field Theory, 18-24 June 2017, Granada, Spai
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