Lattice QCD and Heavy Quark Physics
نویسنده
چکیده
Lattice QCD results relevant to heavy quark physics are reviewed. In particular new results will be shown that, for the first time, include dynamical quarks in the QCD vacuum which are close enough to being realistic to allow accurate extrapolation to the physical point. Agreement with experiment is found for a wide range of spectral quantities and the implications of this for hadronic matrix elements needed for the extraction of CKM elements from B factory experiments is discussed.
منابع مشابه
Heavy quark physics from lattice QCD
I review the current status of lattice calculations of heavy quark quantities. Particular emphasis is placed on leptonic and semileptonic decay matrix elements.
متن کاملLattice QCD and heavy quarks
Quarks are bound into hadrons by the interaction of quantum chromodynamics (QCD), some aspects of which cannot be treated by perturbation theory. As a result, non-perturbative methods have been developed, of which lattice gauge theory is at present the leading contender. The study of hadronic properties of heavyquark systems is valuable for at least two reasons. (1) By peeling away effects of t...
متن کاملModeling Magnetic Field in Heavy ion Collisions Using Two Different Nuclear Charge Density Distributions
By studying the properties of matter during heavy-ion collisions, a better understanding of the Quark-Gluon plasma is possible. One of the main areas of this study is the calculation of the magnetic field, particularly how the values of conductivity affects this field and how the field strength changes with proper time. In matching the theoretical calculations with results obtained in lab, two diffe...
متن کاملNews from Lattice QCD on Heavy Quark Potentials and Spectral Functions of Heavy Quark States
We discuss recent lattice results on in-medium properties of hadrons and focus on thermal properties of heavy quark bound states. We will clarify the relation between heavy quark free energies and potentials used to analyze the melting of heavy quark bound states. Furthermore, we present calculations of meson spectral functions which indicate that the charmonium ground states, J/ψ and ηc, persi...
متن کاملFree energies of heavy quarks in full-QCD lattice simulations with Wilson-type quark action
The free energy between a static quark and an antiquark is studied by using the color-singlet Polyakov-line correlation at finite temperature in lattice QCD with 2+1 flavors of improved Wilson quarks. From the simulations on 323 × 12, 10, 8, 6, 4 lattices in the high temperature phase, based on the fixed scale approach, we find that, the heavy-quark free energies at short distance converge to t...
متن کامل