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by
Markus Diehl(DESY), Paolo Gunnellini(DESY), Vanya Belyaev(ITEP Moscow)
→
Europe/Berlin
Building 1b / Sem. room 4a-b (DESY Hamburg)
Building 1b / Sem. room 4a-b
DESY Hamburg
Description
When the parton densities probed in a proton-proton collision become very large, the probability to observe more than one partonic scattering becomes observable. Such double-parton scattering (DPS) is not described in the standard calculations and needs a special treatment. DPS can be investigated by measuring using different observables. Simulations including contributions of DPS can describe the measurements, while a simulation without DPS fail. Measurements at the LHC clearly show the need of double-parton scattering at large transverse momenta in hadronic collisions.
