In this report I will be showing how to use meson wave functions and masses to find the decay width difference between the two mass eigenstates of the D0 meson. Due to a large coupling at small energies in QCD, perturbation theory unfortunately does us no good. However, there does exist a model that attempts to keep as much of the QCD Lagrangian as possible. The model was developed by Gerard t’...

We present the exact solution of the Klein-Gordon equation in D-dimensions in the presence of the noncentral equal scalar and vector pseudoharmonic potential plus the new ring-shaped potential using the Nikiforov-Uvarov method. We obtain the exact bound-state energy levels and the corresponding eigen functions for a spin-zero particles. We also find that the solution for this noncentral ring-sh...

Using semiclassical expressions for eigenphase shifts and bound state energies arising from WKB approximations to the solutions of coupled equations. we show that quantum mechanical formulas for the third virial coefficient (restricted to positive potentials) and for the second virial cofficient (with anisotropic interactions) lead to the known classical results when Ii goes to zero. The proced...

We assumed that the four gluino containing R-hadrons are the lightest hadrons which contain the LSP. The lighest among these is stable and the other three can deacy into it. Gluon-quark-quark bound state is not observed in nature. One asumption is that it is a repulsive channel in non-purturbative QCD and consequently unstable. On the other hand glueballs are observed and have a finite mass and...

s− and p−wave Λ single–particle energies are obtained for a variety of Λ hyper-nuclei from the relevant self–energy constructed within the framework of a pertur-bative many–body approach. Results are presented for present realistic hyperon– nucleon interactions such as Jülich B and Nijmegen SC models. Effects of the non–locality and energy–dependence of the self–energy on the bound states are i...

We compute bound-state energies in two three-dimensional coupled waveguides, each obtained from the two-dimensional configuration considered in part I by rotating the geometry about a different axis. The first geometry consists of two concentric circular cylindrical waveguides coupled by a finite length gap along the axis of the inner cylinder and the second is a pair of planar layers coupled l...

Discrete γ-rays from the neutron capture state of 13C to its low-lying bound states have been measured using pulsed neutrons at En = 550 keV. The partial capture cross sections have been determined to be 1.7±0.5, 24.2±1.0, 2.0±0.4 and 1.0±0.4 μb for the ground (J = 1/2−), first (J = 1/2+), second (J = 3/2−) and third (J = 5/2+) excited states, respectively. From a comparison with theoretical pr...

We show that using the Dirac equation to calculate quark bound c states can give.rise to significantly different eigenspectra than those obtained by using the same potential in the Schrcedinger equation, even when < v2/c2 > is small. The origin of this effect is identified and discussed.

We study the n-dimensional Schrodinger equation, n 2 2, with a nonspherically symmetric potential in the class of Agmon's short range potentials without any positive energy bound states. We give sufficient conditions that guarantee the existence of a Wiener-Hopf factorization of the corresponding scattering operator. We show that the potential can be recovered from the scattering operator by so...

We employ a nonrelativistic version of QCD (NRQCD) to study heavy qq̄-bound states in the lowest approximation without fine structure. We use gluon configurations on a 16×48-lattice at β = 6.2 from the UKQCD collaboration. For a bare quark mass near that of the b-quark (Ma = 1.6) we obtain the bound state masses for the S, P and both types of D-waves. We also detect signals for two types of hybr...