Student info and photos:K

People
Work Description

Gia KHORIAULI
JINR, Dubna

gia@nusun.jinr.ru

At the current time my scientific work includes two tasks:
&Mac183;Taking a part in ATLAS project-Data Challenge (DC). Since the summer of 2002 year, I productively contribute to one of the phase of this project-DC1. The result of my work is about 5¥104 fully simulated pp->Di-jets events for ATLAS Experiment (G.Khoriauli et al, VII Conf. of Young Scientists, JINR, Dubna 2003, pp.307-310). The next steps that Iím planning to do are reconstruction and further physics analysis of the simulated events.
&Mac183;Iím making calculations of cross-sections and other parameters of the several High Energy physics processes within the new theoretical assumptions made in Laboratory of Theoretical Physics (JINR). These calculations deal with the possibilities of heavy quark-anti-quark bound states existence and their observation in modern experiment.
Also, Iím estimating cross-sections of Higgs bosons decays into different channels within the above theoretical model.

People
Work Description

Andrei KIRIAKOV
IHEP, Protvino

kiriakov@sirius.ihep.su

For my Ph.D. thesis I am working on SVD, on the detector operating at IHEP accelerator at Protvino. I am performing analysis of the data collected by SVD on charm hardroproduction obtained in fixed target experiment at 70 Gev/c.
Now I am working on the analysis of the data sample with two prougs decays of charm particles, measuring the production cross sections with impact parameter technic. From the hardware side I am engaged with the work of monitoring the performance of semiconductor vertex detector and active targed. This includes development of the monitoring software and data analysis.

People
Work Description

Alexander KLIMENKO
IHEP, Protvino

akk@userline.ru

I'm working on a design and doing some studies of the long scintillator counter with a precision timing for the TOF hodoscope, which will be used for the particle identification in the GlueX experiment at the Jefferson Lab.
The experiment is designed to search for the exotic mesons produced by tagged gammas with the energies up to 8 GeV. It was shown in our studies that time resolution of 40 ps can be achieved for the hodoscope. This allows to separate kaons and pions of the energies of up to 5 GeV. The results of TOF counter investigations were presented at the international conferences in Vienna(2001), Novosibirsk(2002), and were published in NIMA (494(2002)495-499).

People
Work Description

Aleksei KORABLEV
IHEP, Protvino

korablev_@mx.ihep.su

I am working now on data analysis of the charge kaon decay experiment performed at 70GEV IHEP accelerator using Tagged Neutrino Facility station (TNF). In total 300 million decays have been collected in the experiment. In particular my task is to choose the effective selection criteria for [K(+-)=>Pi0 e(+-) Nu Gamma] decays with BR~0.0001 to suppress the background. The final goal of my work is to search for T-violation in these decays.

Venelin KOZHUHAROV
University of Sofia

Venelin.Kozhuharov@ cern.ch

I started to work in the field of Experimental Particle Physics in the autumn 2001, when I joined The Particle Physics Group at University of Sofia. Under the supervision of Prof. Dr. Leandar Litov I was involved in the data analysis for NA48 experiment. The continuation of my work was connected with my stay at CERN for three months as a summer student last year. During this period an investigation of the decay Ks->pi0 mu+ mu- has been performed. An upper limit for its branching ratio was set for the first time using NA48 data recorded in 2001. Currently my aim is to improve this limit using the data recorded in year 2002 by NA48/1 experiment. Separately I was involved in the analysis of radiative kaon decays including simulation software development.

Marcin KUCHARCZYK Henryk Niewodniczanski Institute, Krakow
kucharcz@hpdel1.ifj.edu.pl

My current research focuses on understanding the hadronization process in e+e- interactions, using Bose-Einstein interferometry as a tool to determine the size of the source of hadrons. The LEP data suggest that the radius of the volume from which identical bosons and fermions are emitted decreases with increasing masses of the particles. I participated in investigations aimed at understanding of the observed phenomenon within a model proposed by the Cracow theorists A. Bialas and K. Zalewski. I continue these studies working currently on another method of the correlation radius determination which is expected to give reduced systematic errors. This method allows to estimate values of the parameters characteristic for the area of hadronization from correlations studied in "simple" variables, such as polar and azimuthal angles and rapidity. By choosing variables like those we can eliminate the problem of constructing reference sample. Analysis of the difference between azimuthal angles of pipi and KK mesons allows to obtain values of R_transversal radius.

Catherine Cart 06/2003