A loophole to the universal photon spectrum in electromagnetic cascades: applications to non-thermal primordial nucleosynthesis

P. Serpico, Vivian Poulin
2016 Proceedings of 18th International Conference From the Planck Scale to the Electroweak Scale — PoS(PLANCK 2015)   unpublished
We discuss a loophole of standard electromagnetic cascade theory that can have a large effect in the early universe, notably in altering primordial nucleosynthesis bounds on electromagnetically decaying relic particles. We show how this may greatly simplify the possibility to address the long-standing "lithium problem" in terms of new physics models.
doi:10.22323/1.258.0119 fatcat:pun7tg6zwveoxmnkaf2r6eiftu