ATLAS Upgrade Construction Proposal

Lead Research Organisation: University of Birmingham
Department Name: School of Physics and Astronomy

Abstract

The objective of this project is to construct elements of the ATLAS Phase-II Upgrade for operation at the High-Luminosity Large Hadron Collider (HL-LHC). The increased luminosity delivered, around a factor of 10 more than the will be delivered by 2023, by the HL-LHC to ATLAS will significantly enhance the physics programme. The Large dataset collected will allow ATLAS to make precision studies of the Higgs sector, the Standard Model of particle physics, and to extend the mass scales accessible to searches for signatures of new physics well into the TeV region. This will allow ATLAS to address many of the fundamental questions in particle physics:

Is the Higgs mechanism for generating fermion and weak gauge boson masses linked, as is implied by the Standard Model?

Does the Higgs mechanism limit the cross-section of vector boson scattering in the Standard Model at high energies, or is there new physics involved in electroweak symmetry breaking?

Why is the Higgs boson much lighter than the Planck Mass (the hierarchy problem)?

Is there a weakly interacting particle with mass of the order of the electroweak scale that could explain dark matter?

Is supersymmetry (SUSY), a symmetry between bosons and fermions, realised in nature?

Planned Impact

See lead institute JeS form: University of Glasgow, joint proposal reference: U2606107

Publications

10 25 50
 
Description ATLAS Collaboration 
Organisation European Organization for Nuclear Research (CERN)
Country Switzerland 
Sector Public 
PI Contribution Deputy Spokesperson and Spokesperson
Collaborator Contribution They built and operate most of the detector. Etc. Experimental Collaboration.
Impact See elsewhere.