MSSM SUSY Searches at LEP2

The status of SUSY searches at LEP2 up to centre-of-mass energy of 202 GeV is presented. Search strategies for sleptons, squarks, charginos and neutralinos are discussed in the framework of Minimal Supersymmetric Standard Model with R-parity conservation. With no indication for the production of these particles new limits are set on their masses.Comment: Talk presented at 35th Rencontres de Moriond: ElectroWeak Interactions and Unified Theories, Les Arcs, Savoie, France, March 11-18, 2000. LaTex, 8 pages, uses moriond.st

Diboson Production at the Tevatron

We present the latest results on the production of WW, WZ, Wgamma, Zgamma and ZZ events at the Fermilab Tevatron Collider. The results are based on the analyses of 0.2 -- 2 /fb of data collected in p pbar collisions at sqrt(s) = 1.96 TeV by CDF and DO experiments during the Tevatron Run II. Analyses of the diboson production processes provide crucial test of the Standard Model, directly probing its predictions on the Trilinear Gauge Couplings.Comment: Invited talk at the Hadron Collider Physics Symposium (HCP2008), Galena, Illinois, USA, May 27-31, 2008; 9 pages, LaTex, 11 eps figure

The analysis of immigration trends of skilled migrants: case of Georgia

In this paper we investigate several aspects of the contemporary immigration in post-Soviet Georgia by analyzing some recent trends related to the migration phenomena in the country. Our results are based on an extensive field work with two main groups - one, with skilled foreign immigrants in Georgia, and the other, with return Georgian emigrants, both covering all of the country’s territory. Finally, we discuss the return migration and the existing programs of voluntary return between Georgia and other countries, as well as the opportunities for professional realization in the country of the Georgian returnees and the foreign immigrants

THE ANALYSIS OF IMMIGRATION TRENDS OF SKILLED MIGRANTS: CASE OF GEORGIA

In this paper, we investigate several aspects of the contemporary immigration in post-Soviet Georgia by analyzing some recent trends related to the migration phenomena in the country. Our results are based on extensive fieldwork with two main groups – one, with skilled foreign immigrants in Georgia, and the other, with return Georgian emigrants, both covering all of the country’s territory. Finally, we discuss the return migration and the existing programs of voluntary return between Georgia and other countries, as well as the opportunities for professional realization in the country of the Georgian returnees and the foreign immigrants. &nbsp

Performance of the CMS Cathode Strip Chambers with Cosmic Rays

The Cathode Strip Chambers (CSCs) constitute the primary muon tracking device in the CMS endcaps. Their performance has been evaluated using data taken during a cosmic ray run in fall 2008. Measured noise levels are low, with the number of noisy channels well below 1%. Coordinate resolution was measured for all types of chambers, and fall in the range 47 microns to 243 microns. The efficiencies for local charged track triggers, for hit and for segments reconstruction were measured, and are above 99%. The timing resolution per layer is approximately 5 ns

Measurement of the top quark mass using the matrix element technique in dilepton final states

We present a measurement of the top quark mass in pp¯ collisions at a center-of-mass energy of 1.96 TeV at the Fermilab Tevatron collider. The data were collected by the D0 experiment corresponding to an integrated luminosity of 9.7  fb−1. The matrix element technique is applied to tt¯ events in the final state containing leptons (electrons or muons) with high transverse momenta and at least two jets. The calibration of the jet energy scale determined in the lepton+jets final state of tt¯ decays is applied to jet energies. This correction provides a substantial reduction in systematic uncertainties. We obtain a top quark mass of mt=173.93±1.84  GeV