Fyzikální ústav Akademie věd ČR

Semináře sekce

Čtvrtek, 06.10.2016 14:00 - 15:00

Dr. Cyrille Marquet (Ecole Polytechnique, France)

Abstrakt:

We study the production of forward dijets in dilute-dense hadronic collisions, such as proton-lead collisions at the LHC. These final-state configurations, with both jets produced in the forward direction, probe the gluon density of the lead nucleus at very small longitudinal momentum fractions, and may therefore be sensitive to the non-linear "saturation" regime of QCD.

Čtvrtek, 20.10.2016 14:00 - 15:00

Dr. Roman Pasechnik (Lund University, Švédsko)

Abstrakt:

Production of heavy photons (Drell-Yan), gauge bosons, Higgs bosons, heavy flavors, which is treated within the QCD parton model as a result of hard parton-parton collision, can be considered as a bremsstrahlung process in the target rest frame. In my talk, I discuss the basic features of the diffractive channels of these processes in the framework of color dipole approach. The main observation is a dramatic breakdown of diffractive QCD factorisation due to the interplay between soft and hard interactions, which dominates these processes.

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