Glueballs and Particles Looking like Them
نویسنده
چکیده
Some aspects of hadron spectroscopy are reviewed as of summer 2005.
منابع مشابه
Glueballs and Hybrids (Gluons as Constituents)
In addition to the familiar baryons made from three quarks and mesons made from a quark and an antiquark, the spectrum of QCD is expected to contain glueballs, hybrids and multiquark states. Since the earliest lattice QCD calculations it has been recognized that lattice QCD should be used to calculate the properties of these particles. Hopefully, lattice results will help to sort out which of t...
متن کاملLattice Predictions for Hybrids and Glueballs
QCD is a simple elegant theory, but it is hard to solve it using anything other than perturbation theory. Quantities, such as masses, depend on the coupling (g) like M ∼ e 2 [1], hence perturbation theory can’t be used to compute the masses of hadrons such as the proton. Our inability to solve QCD non-perturbatively makes it hard to determine basic parameters of the quark sector of the standard...
متن کاملLattice Calculation of Glueball Matrix Elements
Matrix elements of the form < 0|Tr g2GG|G > are calculated using the lattice QCD Monte Carlo method. Here, |G > is a glueball state with quantum numbers 0++, 2++, 0−+ and G is the gluon field strength operator. The matrix elements are obtained from the hybrid correlation functions of the fuzzy and plaquette operators performed on the 124 and 144 lattices at β = 5.9 and 5.96 respectively. These ...
متن کاملLattice sum rules for the color fields.
We analyse the sum rules describing the action and energy in the colour fields around glueballs, torelons and static potentials.
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تاریخ انتشار 2005