Photon Structure and gamma-gamma Physics

The LEP experiments are making real progress in understanding the structure of the photon, though the results do not yet give such clear demonstrations of QCD in action as the proton structure has done. Other new results are reported, including QED related effects and $\gamma \gamma \to Resonances$, from LEP and from CLEO II.Comment: 16 pages, 15 figures, Contribution to "Physics in Collision", Frascati, June 18-19, 199

The Higgs and Neutralino Sectors of the Next-to-Minimal Supersymmetric Standard Model

The Next-to-Minimal Supersymmetric Standard Model (NMSSM) includes a Higgs iso-singlet superfield in addition to the two Higgs doublet superfields of the minimal supersymmetric extension. The Higgs sector and neutralino sectors of this model are examined within the context of a future linear collider.Comment: 5 pages, talk presented at LCWS04, International Conference on Linear Colliders, 19-23 April 2004, Paris, France, to appear in the proceeding

The CMB - Contemporary Measurements and Cosmology

Since the discovery of the Cosmic Microwave Background (CMB) in 1965, characterization of the CMB anisotropy angular power spectrum has become somewhat of a holy grail for experimental cosmology. Because CMB anisotropy measurements are difficult, the full potential of the CMB is only now being realized. Improvements in experimental techniques and detector technology have yielded an explosion of progress in the past couple of years resulting in the ability to use measurements of the CMB to place meaningful constraints on cosmological parameters. In this review, I discuss the theory behind the CMB but focus primarily on the experiments, reviewing briefly the history of CMB anisotropy measurements and focusing on the recent experiments that have revolutionized this field. Results from these modern experiments are reviewed and the cosmological implications discussed. I conclude with brief comments about the future of CMB physics.Comment: 18 pages including 5 ps figures. GR16 proceedings to appear in World Scientifi

Two Photon Physics at LEP2; including data Monte-Carlo comparison

A partisan review of some of the most important $\gamma\gamma$ channels accessible at LEP 2, with special stress on the measurement of the photon structure function $F_{2}^{\gamma}$ and on associated problems with Monte Carlo modelling.Comment: 7 pages including 5 figures. Invited talk given at the LEP2 Phenomenology Workshop, Oxford, U.K., 14 April 199