Speaker
Mr
Garurav Kumar Tomar
(Physical Research Laboratory, Ahmedabad)
Description
We consider scenarios in which the annihilation of
self-conjugate spin-1 dark matter to a Standard Model
fermion-antifermion final state is chirality suppressed, but
where this suppression can be lifted by the emission of an
additional photon via internal bremsstrahlung. We find that
this scenario can only arise if the initial dark matter
state is polarized, which can occur in the context of
self-interacting dark matter. In particular, this is
possible if the dark matter pair forms a bound state that
decays to its ground state before the constituents
annihilate. We will show that the shape of the resulting
photon spectrum is the same as for self-conjugate spin-0 and
spin-1/2 dark matter, but the normalization is less heavily
suppressed in the limit of heavy mediators.
Primary author
Mr
Garurav Kumar Tomar
(Physical Research Laboratory, Ahmedabad)
