ALICE Particle Identification

During my stay at CERN, I have attended lectures mornings and worked on my research project under orienting guidance of my supervisors afternoons. The lectures were informative and pedagog- ically well-prepared and presented. Their contents was an excellent combination of theoretical and experimental topics in high-energy physics. Furthermore, I was privileged to visit the ALICE, CMS and LHCb detectors and the LINIAC accelerator. I have participated in workshop on ”MadGraph software”. I was furnished with excellent experiences and cultural exchanges with good colleagues from different countries. I got opportunities to know what the other students have done, in which projects they were involved and how they performed their scientific researches, especially regarding LHC data analysis. For my own project, I have to prove excellent experience with C++ and of course LINUX, ROOT and AliROOT. Tools such as Histograms, Graphs, Fitting, trees and many others were very essential. Furthermore, I am very proud getting a fruitful training in GIANT 3 but I exclusively use PYTHIA8 in order to generate pp collisions at different energies. we have to initialize fitting parameters for thee individual Gaussian fits for π ± , K ± and p(anti-p), Then we integrate over each component in order to extract the number of counts. The results are very convincing. They are nicely comparable with the published measurements.