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hep-ph2026
Right-Handed Neutrino Production by an Axion-like Inflaton: Implications for Leptogenesis
Weiyi Deng, Chengcheng Han, Wuzhou Yin +1
We study heavy right-handed neutrino production induced by a derivative coupling to an axion-like inflaton and its implications for non-thermal leptogenesis. We develop a unified t…
hep-ph2026
Line-of-sight magnetic-field propagation effects on axion-like particle constraints from GRB 221009A
Chengcheng Han, Zhanhong Lei, Jiajie Yang +1
High-energy photons from GRB 221009A provide a powerful opportunity to probe axion-like particles (ALPs) through photon-ALP oscillations in cosmic magnetic fields. We revisit the A…