How to produce antihelium from dark matter. (arXiv:1906.01667v1 [hep-ph])
<a href="http://arxiv.org/find/hep-ph/1/au:+Heeck_J/0/1/0/all/0/1">Julian Heeck</a>, <a href="http://arxiv.org/find/hep-ph/1/au:+Rajaraman_A/0/1/0/all/0/1">Arvind Rajaraman</a>
We show how to produce antihelium and other antinuclei in large fractions
from the decays of a new particle $phi$ that carries baryon number. Close to
threshold, the production of nuclear bound states is preferred over the decay
into individual nucleons, effectively decoupling antihelium and antiproton
fluxes and allowing the former to dominate. $phi$ can either form dark matter
itself or be produced by it, and can give rise to a flux of antihelium that is
large enough to explain the preliminary antihelium events reported by AMS-02.
We show how to produce antihelium and other antinuclei in large fractions
from the decays of a new particle $phi$ that carries baryon number. Close to
threshold, the production of nuclear bound states is preferred over the decay
into individual nucleons, effectively decoupling antihelium and antiproton
fluxes and allowing the former to dominate. $phi$ can either form dark matter
itself or be produced by it, and can give rise to a flux of antihelium that is
large enough to explain the preliminary antihelium events reported by AMS-02.
http://arxiv.org/icons/sfx.gif
