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The nature and origin of dark matter (DM) remain among the
most compelling mysteries in modern cosmology, with current observations
indicating that approximately 26.8% of the Universe’s energy density is
composed of DM. A promising avenue to address this mystery is to extend
the Standard Model (SM) by introducing new particles, particularly those
that are vector-like in nature. These particles are especially
interesting as their masses can be related to symmetries beyond the SM,
allowing greater flexibility in satisfying both experimental and
theoretical constraints, such as DM relic density, perturbativity, and
anomaly cancellation. In this talk, I will discuss the interplay between
vector-like doublet DM and leptoquark scalars in developing viable
WIMP DM phenomenology. In this model, the DM is pseudo-Dirac in nature,
which makes it possible to satisfy the strong direct detection bounds.
Also, due to the presence of scalar leptoquarks, a huge DM mass range can
satisfy the observed DM relic density. |