Journal article

LHC as an Axion Factory: Probing an Axion Explanation for (g-2)(mu) with Exotic Higgs Decays

Martin Bauer, Matthias Neubert, Andrea Thamm

Physical Review Letters | AMER PHYSICAL SOC | Published : 2017

Abstract

We argue that a large region of so-far unconstrained parameter space for axionlike particles (ALPs), where their couplings to the standard model are of order (0.01-1)  TeV^{-1}, can be explored by searches for the exotic Higgs decays h→Za and h→aa in run 2 of the LHC. Almost the complete region in which ALPs can explain the anomalous magnetic moment of the muon can be probed by searches for these decays with subsequent decay a→γγ, even if the relevant couplings are loop suppressed and the a→γγ branching ratio is less than 1.

University of Melbourne Researchers

Grants

Awarded by Cluster of Excellence Precision Physics, Fundamental Interactions and Structure of Matter of the German Federal Ministry for Education and Research (BMBF)


Awarded by German Federal Ministry for Education and Research (BMBF)


Funding Acknowledgements

We are grateful to Rocio del Rey, Lee Roberts, Jorg Jackel, Joachim Kopp, and Pedro Schwaller for useful discussions. This work has been supported by the Cluster of Excellence Precision Physics, Fundamental Interactions and Structure of Matter (PRISMA-EXC 1098) and Grant No. 05H12UME of the German Federal Ministry for Education and Research (BMBF).