Proposal of new BSM searches at the LHC and at Telescopes

by Dr Filippo Sala

Thursday 7 Feb 2019, 16:00 → 17:00 Europe/Amsterdam

Nikhef

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.