Quenched superradiance of dark photon clouds around spinning primordial black holes could turn neutrino electromagnetic moment bounds into observable neutrino fluxes and limits on PBH abundance.
All electromagnetic form factors
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abstract
The electromagnetic form factors of spin-1/2 particles are known, but due to historical reasons only half of them are found in many textbooks. Given the importance of the general result, its model independence, its connection to discrete symmetries and their violations we made an effort to derive and present the general result based only on the knowledge of Dirac equation. We discuss the phenomenology connected directly with the form factors, and spin precession in external fields including time reversal violating terms. We apply the formalism to spin-flip synchrotron radiation and suggest pedagogical projects.
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Enlightening dark moments of neutrino with superradiance
Quenched superradiance of dark photon clouds around spinning primordial black holes could turn neutrino electromagnetic moment bounds into observable neutrino fluxes and limits on PBH abundance.