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Content archived on 2024-04-30

Testing quantum chromodynamics with photons and heavy quarks

Objective



Research objectives and content
The objective of the proposed research is to contribute to the tests of Quantum Chromodynamics as the correct theory for describing the strong force. This we plan to do by working on the production of heavy quarks in photons collisions, from HERA up to the future Next Linear Collider. From the theoretical point of view, the large mass of the heavy quark makes the QCD predictions more reliable: we plan to investigate charm and bottom photoproduction, and their correlations with photons and jets. From an experimental point of view, photons and heavy quarks provide a cleaner background and a characteristic tagging. These features suggest accurate results could be obtained both on the theoretical and the experimental side. Hence, their comparison will provide stringent bounds on the validity of QCD.
A strictly related chapter will be the investigation of heavy quarkonia photoproduction and of the photon's partonic substracture, and the attempt to provide a criterion to separate direct and resolved photon events both experimentally and theoretically up to next-to-leading accuracy. Training content (objective, benefit and expected impact)
The training content resides primarily in acquiring the theoretical tools needed to devise parton distribution functions sets for the photon, i.e. to learn to describe the photon substructure as suggested by QCD. The whole machinery necessary for calculating cross sections to be compared with the data will then be needed. Both these items have been pioneered and thoroughly investigated by the Orsay group I' m looking forward to joining: a deeper knowledge of them will complement my present expertise.

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RGI - Research grants (individual fellowships)

Coordinator

UNIVERSITE DE PARIS-SUD XI
EU contribution
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Address
Centre Orsay, Bètiment 210
91405 ORSAY
France

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Total cost

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Participants (1)

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