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hep-ph2026
Presupernovae Strongly Constrain Electrophilic MeV Bosons
Yu Cheng, Damiano F. G. Fiorillo, Chui-Fan Kong +1
The years preceding a supernova (SN) can constrain new electrophilic bosons with MeV masses more than the explosion itself. Although cooler than SNe, the massive progenitors mainta…
hep-ph2026
Probing Feebly Interacting Particles with 511 keV Line from Circumstellar Medium of Supernovae
Yu Cheng, Chui-Fan Kong, Yen-Hsun Lin +2
Core-collapse supernovae (CCSNe) are intense sources of feebly interacting particles (FIPs), whose visible decays beyond the stellar envelope can generate distinct electromagnetic…
hep-ph2026
Circumstellar Medium of Supernovae as New Probes for Feebly Interacting Particles
Yu Cheng, Chui-Fan Kong, Yen-Hsun Lin +2
We propose a novel strategy to probe feebly interacting particles (FIPs) by exploiting the dense, confined circumstellar medium (CSM) surrounding core-collapse supernovae. FIPs pro…