M1: Higgs boson decays to tau leptons at high momenta and effective-field theory interpretations with the ATLAS experiment at the LHC

Subject : ATLAS is one of the two general-purpose experiments at the LHC. It is currently collecting LHC data at a center of mass energy of 13.6 TeV, with the primary objective to search for new physics at the energy frontier. The Higgs boson, discovered at the LHC in 2012, is one of the main windows into potential new phenomena. The internship will aim to study Higgs boson production at very high momenta, a kinematic regime which is expected to be particularly sensitive to physics beyond the Standard Model. 

The study will focus on the measurement of boosted Higgs decays into tau leptons, which is particularly well-suited to the study of this regime. Specific work topics will depend on the status of the analysis at the time of the internship, but may include the identification of tau leptons with the ATLAS detector; the selection and identification of H→τ+τ- decays using machine-learning techniques; and/or the interpretation of the results in the framework of Effective Field theories.

Informations:

Expérience: ATLAS

Responsable de stage: Nicolas BERGER et Gianna LOESCHCKE CENTENO

Email: berger@lapp.in2p3.fr

Approximate start of the training period is end of April beginning of May, duration is 3 months.