Precision Υ spectroscopy from nonrelativistic lattice QCD

Precision charmonium spectroscopy from lattice QCD.

We present results for Charmonium spectroscopy using Non-Relativistic QCD (NRQCD). For the NRQCD action the leading order spin-dependent and next to leading order spin-independent interactions have been included with tadpole-improved coefficients. We use multi-exponential fits to multiple correlation functions to extract ground and excited S states. Splittings between the lowest S, P and D stat...

ar X iv : h ep - l at / 9 40 60 17 v 1 2 5 Ju n 19 94 Precision Υ Spectroscopy from Nonrelativistic Lattice QCD

The spectrum of the Υ system is investigated using the Nonrelativistic Lattice QCD approach to heavy quarks and ignoring light quark vacuum polarization. We find good agreement with experiment for the Υ, Υ, Υ and for the center of mass and fine structure of the χb-states. The lattice calculations predict bb̄ D-states with center of mass at (10.20 ± 0.07 ± 0.03)GeV. Fitting procedures aimed at ex...

Baryon Spectroscopy from Lattice QCD

Experiments show that many excited-state hadrons exist, and there are significant experimental efforts to map out the QCD resonance spectrum, such as Hall B and the proposed Hall D at Jefferson Lab, ELSA associated with the University of Bonn, COMPASS at CERN, PANDA at GSI, and BESIII in Beijing. Hence, there is a great need for ab initio determinations of such states in lattice QCD. To extract...

Hadron spectroscopy from lattice QCD

I present recent developments in the lattice QCD calculations of the light hadron spectrum. Emphasis is placed on the limitation of the quenched approximation in reproducing the observed spectrum and indications that the discrepancy is reduced by introducing two flavors of light dynamical quarks.

The Improvement Program in Nonrelativistic Lattice QCD