Theory

Proposal of new BSM searches at the LHC and at Telescopes

by Dr. Filippo Sala

Thursday, 7 February 2019 from to (Europe/Amsterdam)
at Nikhef
Description
The LHC has pushed the scale of the needed new physics (NP) beyond the ~ TeV range. How to experimentally test NP models at and beyond those scales?
A first possibility is to look for low energy remnants of such theories, like pseudo-Goldstone bosons (aka ALPs). I will show how ALP masses between a few and 100 GeV are poorly constrained, derive new strong bounds on diphoton resonances in that range, and propose new promising searches at ATLAS, CMS, LHCb and Belle-II.
A second possibility is to look for DM (much) heavier than a TeV in cosmic rays, that are observed up to 100 TeV and beyond by several ongoing and near-future telescopes (HESSII, CTA, TAIGA, ANTARES, IceCube, KM3NeT, CALET, AMS-02...). I will discuss the theory and phenomenology of models that evade the so-called DM unitarity bound, and thus enrich the physics case of such telescopes.
The impact of both LHC and telescope searches on motivated UV frameworks will also be emphasised.