Speaker
Soubhik Kumar
(UC Berkeley)
Description
Heavy QCD axions are well-motivated BSM candidates that can address both the strong CP problem and the axion quality problem. The defining gluon coupling can lead to significant production of such axions in beam dump and forward facilities. Additionally, if axions couple to SM leptons, as can easily happen within UV frameworks, the produced axions can exhibit long-lived decay into a pair of leptons. In particular, above the dimuon threshold and below a GeV, dimuons can be a dominant decay channel. We utilize this possibility to constrain new regions of heavy QCD axion parameter space using existing ArgoNeuT data, and project what a future analysis (e.g., at DUNE and FASER) might be able to achieve.
Author
Soubhik Kumar
(UC Berkeley)
