Analysis Centre Seminar: Yuri Dokshitzer: Some entertaining aspects of Multiple Parton Interactions physics
by
Yuri Dokshitzer(Paris)
→
Europe/Berlin
SR 10 (DESY)
SR 10
DESY
Description
Multiple parton interactions (MPI) when in a single collision of hadrons more than one parton pair enter hard scattering, are rare. Nevertheless, such collisions have specific final state topology, so that in a well defined part of phase space MPI turn out to be a significant - and even dominant - source of multi-jet production.
There are underwater stones that sunk many theoretical expeditions that aimed at predicting MPIs. To understand this physics, one has to critically reexamine the familiar momentum-space Feynman diagram technique for calculating particle scattering amplitudes, and to pay attention to the geometry of the process. Then the MPI physics becomes rather transparent and predictable.
To study MPIs is important not only for evaluating QCD backgrounds at LHC new physics searches, but also for better understanding the structure of the proton.
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EVO connection:
Title: Analysis Centre Seminars
Description: Analysis Centre Seminars
Community: Terascale
Phone Bridge ID: 1312410
Meeting URL:
http://evo.vrvs.org/evoGate/koala.jnlp?meeting=MaMDMt222sDeDi9M98DI9a