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Dijet Azimuthal Decorrelations in pp Collisions at

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

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Dijet Azimuthal Decorrelations in pp Collisions at

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  1. Dijet Azimuthal Decorrelations in ppCollisions at

  2. Introduction • Prerequisites for studies • Distributions & cuts • MC samples (compared with CMS data) • MC samples (without CMS data)

  3. Prerequisites for studies • At born level • Gluon emission causes deviations from • Experiments rely on Monte Carlo

  4. 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

  5. Distributions & cuts • Rapidity • Two jets with PT >30GeV • 4 regions :

  6. MC samples (compared with CMS data) • Herwig ++ • Pythia 6 • MadGraph

  7. MC samples (compared with CMS data)

  8. MC samples (compared with CMS data)

  9. MC samples (compared with CMS data)

  10. MC samples (without CMS data)

  11. MC samples (without CMS data)

  12. Conclusion • The measured normalized distributions are better described by the PYTHIA and HERWIG++ event generator • MPI significantly influences distribution

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