Fyzikální ústav Akademie věd ČR

Seminar Thursday, 20/10/2016 14:00 - 15:00

Speakers: Dr. Roman Pasechnik (Lund University, Sweden)
Place: Conference hall in the building of the Institute of Physics, Na Slovance 2, Prague 8
Presented in English
Organisers: Division of Elementary Particle Physics

Abstract:

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. This observation is crucial for phenomenological studies of diffractive reactions in high-energy hadronic collisions.