17-22 April 2017
UZ Obergurgl
Europe/Zurich timezone

LHC probes of axion-like particles

17 Apr 2017, 20:00
1h
UZ Obergurgl

UZ Obergurgl

University Center Obergurgl Gaisbergweg 5 6456 Obergurgl Austria
Opening Talk Opening Talk

Speaker

Matthias Neubert (Johannes Gutenberg-Universität Mainz)

Description

We argue that the study of rare Higgs decays in the high-luminosity run at the LHC can probe axions and axion-like particles (ALPs) in a wide range of parameter space, which is otherwise inaccessible to experimental searches. Concerning the coupling of the ALP to photons, our strategy covers the current “gap” in the mass range between 1 MeV and 60 GeV down to photon-axion coupling as small as 10^(-6)/TeV. An ALP in this parameter range can explain the anomalous magnetic moment of the muon and is consistent with electroweak precisions tests and flavor constraints. In our analysis we consider the most general effective Lagrangian for a spin-0 particle protected by a shift symmetry, motivated by many extensions of the Standard Model with a spontaneously broken global symmetry.

Primary author

Matthias Neubert (Johannes Gutenberg-Universität Mainz)

Presentation Materials