We have calculated inclusive two-jet cross sections in next-to-leading order QCD for low Q2 ep collisions superimposing direct and resolved contributions. Infrared and collinear singularities in the virtual and real contributions are cancelled with the phase space slicing method. Various inclusive two-jet distributions have been computed. The results are compared with recent data from the ZEUS ...

Robert C. Elson,1,2 Allen I. Selverston,1,2,3 Ramon Huerta,2,4 Nikolai F. Rulkov,2 Mikhail I. Rabinovich,2 and Henry D. I. Abarbanel2,5 1Department of Biology, University of California, San Diego, La Jolla, California 92093-0357 2Institute for Nonlinear Science, University of California, San Diego, La Jolla, California 92093-0402 3Instituto de Neurobiologica, Old San Juan, 00901, Puerto Rico 4E...

We consider some access protocols for Aloha type multiaccess channels. We argue, and show in an important case, that they can be modified t o allow new transmitters to join the system at arbitrary times. This feature, known as "limited sensing" or "continuous entry" need NOT reduce throughput performances. In the case presented, the modified algorithm i s also robust with respect to feedback er...

The connection between renormalons and power corrections is investigated for the typical infrared renormalon integral assuming the effective coupling constant has an infrared fixed point of an entirely perturbative origin. It is shown that even then the full answer differs from the Borel sum by a power correction.A comparaison with the analogue results when the fixed point is generated by the e...

We have calculated inclusive one– and two–jet production in photon–photon collisions in next–to–leading order superimposing direct, single resolved and double resolved cross sections. The results are compared with recent experimental data from the TOPAZ and AMY collaborations at TRISTAN. Good agreement is found between experiment and the theoretical results. ∗Supported by Bundesministerium für ...

The determination of the full SUSY QCD corrections to the production of squarks, gluinos and gauginos at the Tevatron is reviewed. The NLO corrections stabilize the theoretical predictions of the various production cross sections significantly and lead to sizeable enhancements of the most relevant cross sections. We discuss the phenomenological consequences of the results on present and future ...

I present a theoretical discussion of the uncertainties related to the QCD analysis of the proton structure function F2(x,Q) at small x. The role played by the ‘unphysical’ gluon density is pointed out. It is shown how the study of more observables can reduce the theoretical uncertainty and, in particular, an alternative method of analysis, based on the introduction of physical anomalous dimens...

The theoretical status of Higgs boson production and decay at the Tevatron within the Standard Model and its minimal supersymmetric extension is reviewed. The focus will be on the evaluation of higher-order corrections to the production cross sections and their phenomenological implications. Contribution to the Workshop Physics at Run II – Supersymmetry/Higgs, 1998, Fermilab, USA Supported by B...

We have calculated inclusive two-jet cross sections in next-to-leading order QCD for direct photoproduction in low Q2 ep collisions at HERA. Infrared and collinear singularities in real and virtual contributions are cancelled with the phase space slicing method. Analytical formulas for the different contributions giving the dependence on the slicing parameter are presented. Various oneand two-j...

Photometric and spectroscopic observations of the candidate cataclysmic variable KUV03580+0614, independently found from the Hamburg survey as HS 0357+0614, reveal this to be a cataclysmic variable with an orbital period of 3.4 hrs. CVs with periods in this range are usually novalikes belonging to the SW Sex or Intermediate Polar categories. The variability, spectroscopic characteristics and th...