Open questions of BSM Cosmology

TL;DR

This paper reviews how Beyond Standard Model (BSM) physics influences cosmology, discussing observational hints and open questions about BSM-related phenomena like dark matter, primordial black holes, and early galaxy formation.

Contribution

It provides a comprehensive overview of current observational evidence and open questions related to BSM cosmology, highlighting the interplay between theory and recent experimental results.

Findings

Positive dark matter search results from DAMA/NaI and DAMA/LIBRA

Gravitational Wave observations suggest primordial black holes

Early galaxy formation indications from James Webb Space Telescope

Abstract

BSM physics, on which the now standard inflationary cosmology with baryosynthesis and dark matter/energy is based, inevitably leads to cosmological scenarios beyond this standard model, involving specific model dependent choice of models and parameters of BSM physics. Such model dependent cosmological predictions may have already found confirmations in the positive results of direct dark matter searches by DAMA/NaI and DAMA/LIBRA experiments, interpretation of the results of Gravitational Wave experiments in terms of Primordial Black Hole merging, observation of Stochastic GravitationalWave background by Pulsar Timing Arrays, indications of early galaxy formation in the observations of James Webb Space Telescope and searches for cosmic antihelium in the AMS02 experiment. We discuss the open questions in studies of these signatures of BSM cosmology.