Comparison of the triggers of the ATLAS, ALICE and CMS experiments and the trigger of the UA1 experiment. Analysis of proton-proton and proton-antiproton interactions on basis of the MC event generator Pythia

Natalia Victorovna Abramovskaya
2013 Proceedings of XXI International Baldin Seminar on High Energy Physics Problems — PoS(Baldin ISHEPP XXI)   unpublished
The triggers of the ATLAS, ALICE and CMS experiments for proton-proton collisions and the trigger of the UA1 experiment for proton-antiproton collisions are considered. It is shown that uncertainties which arise from different procedures of event selection are not sufficient to explain the difference of about 20-30% in inclusive spectra between the LHC experiments and the UA1 experiment. The dissimilarity in proton-proton and proton-antiproton interactions in simulation by the MC event generator Pythia is also discussed.
doi:10.22323/1.173.0071 fatcat:mvvmzzq5rjgf7dhkgsbiwxvlky