New Physics from Multi-Higgs Models


  • Call:

    IDPASC Portugal - PHD Programme 2016

  • Academic Year:

    2016 / 2017

  • Domain:

    Theoretical Particle Physics

  • Supervisor:

    Joao Silva

  • Co-Supervisor:

    Jorge Romão

  • Institution:

    Instituto Superior Técnico

  • Host Institution:

    Instituto Superior Técnico

  • Abstract:

    After CERN announced the discovery of a particle with Higgs-like properties predicted in 1964, Higgs and Englert received the 2013 Physics Nobel Prize. This particle corresponds to a spin-zero field, necessary to give mass to the remaining particles in the Standard Model of electroweak interactions. There is no fundamental argument determining the number of scalar particles. Thus, as one probes further into the properties of the particle discovered, one must look for the differences which will exist in case there are more than one scalar; the so-called Multi-Higgs models. This has become more important after tantalizing signs of a possible second scalar occurring at 750 GeV were found by both ATLAS and CMS. In this project, we wish to explore the consequences for LHC and ILC of the presence of more than one Higgs field. Conversely, we wish to understand how current and upcoming data affects these models. The project will be co-supervised by João P. Silva and Jorge C. Romão and can have a larger interface with phenomenology or be more theoretical, depending on the interests and abilities of the student. We have a large publication record and impact in this field; the last student working with us on similar topics had two published articles and one submitted in about one year.