Excited bottomonia masses and widths are extracted from lattice NRQCD using a smeared-operator GEVP, showing a width hierarchy and a slowly melting ground state.
Hadron Properties with FLIC Fermions
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abstract
The Fat-Link Irrelevant Clover (FLIC) fermion action provides a new form of nonperturbative O(a)-improvement in lattice fermion actions offering near continuum results at finite lattice spacing. It provides computationally inexpensive access to the light quark mass regime of QCD where chiral nonanalytic behaviour associated with Goldstone bosons is revealed. The motivation and formulation of FLIC fermions, its excellent scaling properties and its low-lying hadron mass phenomenology are presented.
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Anisotropic excited bottomonia from a basis of smeared operators
Excited bottomonia masses and widths are extracted from lattice NRQCD using a smeared-operator GEVP, showing a width hierarchy and a slowly melting ground state.