General information
Organisation
The French Alternative Energies and Atomic Energy Commission (CEA) is a key player in research, development and innovation in four main areas :
• defence and security,
• nuclear energy (fission and fusion),
• technological research for industry,
• fundamental research in the physical sciences and life sciences.
Drawing on its widely acknowledged expertise, and thanks to its 16000 technicians, engineers, researchers and staff, the CEA actively participates in collaborative projects with a large number of academic and industrial partners.
The CEA is established in ten centers spread throughout France
Reference
SL-DRF-24-0577
Direction
DRF
Thesis topic details
Category
Corpuscular physics and outer space
Thesis topics
Testing the Standard Model in the Higgs-top sector in the multilepton final using the ATLAS detector at the LHC
Contract
Thèse
Job description
The thesis proposes to measure in a coherent way the different rare processes of production of top quarks in association with bosons in the final state with multiple leptons at the Large Hadron Collider (LHC). The thesis will be based on the analysis of the large dataset collected and being collected by the ATLAS experiment at a record energy. The joint analysis of the ttW, ttZ, ttH and 4top processes, where one signal process becomes background when studying the other ones, will allow to get complete and unbiased measurements of the final state with multiple leptons.
These rare processes, which became accessible only recently at the LHC, are powerful probes to search for new physics beyond the Standard Model of particle physics, for which the top quark is a promising tool, in particular using effective field theory. Discovering signs of new physics that go beyond the limitations of the Standard Model is a fundamental question in particle physics today.
University / doctoral school
PHENIICS (PHENIICS)
Paris-Saclay
Thesis topic location
Site
Saclay
Requester
Position start date
01/10/2024
Person to be contacted by the applicant
DELIOT Frédéric frederic.deliot@cern.ch
CEA
DRF/IRFU
CEA-Saclay
Irfu/DPhP
91191 Gif-sur-Yvette CEDEX
0169086424
Tutor / Responsible thesis director
DELIOT Frédéric frederic.deliot@cern.ch
CEA
DRF/IRFU
CEA-Saclay
Irfu/DPhP
91191 Gif-sur-Yvette CEDEX
0169086424
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