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hep-ph2026
Minimal cascade decay of the top quark through a new scalar
Bogdan A. Dobrescu, Max H. Fieg, Alessandro Russo
We explore a possible decay of the top quark into a new scalar plus a charm quark. The decay is mediated by a dimension-5 operator that may be generated by the exchange of a…
hep-ph2026
Cornering MeV-GeV Axions and Dark Photons with LDMX
Sarah Gaiser, Alessandro Russo, Philip Schuster
Axion-like particles (ALPs), the QCD axion, and dark photons in the MeV-GeV mass range are motivated by various dark matter models and the strong CP problem, and are ubiquitous in…