RECONSTRUCTING THE K0/S - MESON FROM THE FIRST DATA OF CMS EXPERIMENT
Abstract
The Large Hadron Collider startup took place on November 2009 in CERN, at center-of-mass energies of 900 GeV for the colliding
protons. The results of processing the first data accumulated by CMS experiment are presented. For processing and analyzing the
track collections as well as the collection of identified particles have been used. The distributions of charged pions over their
transverse momentum and pseudorapidity are built. К0
s−meson mass is reconstructed in channel of К0/s decay to two charged pions. Comparison with results of computer simulation of proton-proton interactions in CMS detector is also done. It is shown that reconstruction of events is adequate.
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