dijet azimuthal decorrelations in pp collisions at
Post on 16-Feb-2016
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Dijet Azimuthal Decorrelations in pp Collisions at
Introduction
• Prerequisites for studies• Distributions & cuts• MC samples (compared with CMS data)• MC samples (without CMS data)
Prerequisites for studies
• At born level • Gluon emission causes deviations from• Experiments rely on Monte Carlo
Distributions & cuts
• Distribution:
• trigger systems L1 and HLT require pT>20 GeV and pT > 30 GeV respectively
• Jets reconstructed with unti-kT algorithm • required vertex distance d<24cm
Distributions & cuts
• Rapidity • Two jets with PT >30GeV• 4 regions :
MC samples (compared with CMS data)
• Herwig ++• Pythia 6• MadGraph
MC samples (compared with CMS data)
MC samples (compared with CMS data)
MC samples (compared with CMS data)
MC samples (without CMS data)
MC samples (without CMS data)
Conclusion
• The measured normalized distributions
are better described by the PYTHIA and HERWIG++ event generator
• MPI significantly influences distribution
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