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Non-Resonant Searches for Axion-Like Particles at the LHC

Jul 28, 2021, 9:30 AM


Parallel session talk Searches for New Physics T10: Searches for New Physics


Jorge F. de Trocóniz


We discuss non-resonant ALP-mediated diboson production, a collider probe for axion-like particles (ALPs) which takes advantage of the derivative nature of their interactions with Standard Model particles; here ALPs participate as off-shell mediators of 2 → 2 scattering processes at colliders like the LHC. The power of this novel type of search was first tested by deriving limits on ALP couplings to gauge bosons via processes like gg → ZZ using Run 2 CMS public data, probing previously unexplored areas of the ALP parameter space. Other non-resonant searches involving the ALP couplings to other electroweak bosons and/or the Higgs particle are presented. LHC experiments are now searching for these processes using the full Run 2 data samples. In addition, new studies on non-resonant ALP-mediated Vector-Boson Scattering (VBS) and preliminary results based on recently published CMS data are presented. Expectations for LHC Run 3 and HL-LHC are derived.

First author Jorge F. de Trocóniz
Collaboration / Activity Particle Physics exp. / pheno.

Primary author


Presentation materials