181 citations · 398 across the 14 of their papers we have counts for
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Dynamics of metastable Standard Model particles from long-lived particle decays in the MeV primordial plasma
Kensuke Akita, Gideon Baur, Maksym Ovchynnikov +2
We investigate the cosmological impact of hypothetical unstable new physics particles that decay in the MeV-scale plasma of the Early Universe. Focusing on scenarios where the deca…
New physics decaying into metastable particles: impact on cosmic neutrinos
Kensuke Akita, Gideon Baur, Maksym Ovchynnikov +2
We investigate decays of hypothetical unstable new physics particles into metastable species such as muons, pions, or kaons in the Early Universe, when temperatures are in the MeV…
Primordial neutrinos and new physics: novel approach to solving neutrino Boltzmann equation
Maksym Ovchynnikov, Vsevolod Syvolap
Understanding how new physics influences the dynamics of cosmic neutrinos during their decoupling is crucial in light of upcoming precise cosmological observations and the need to…
How new physics affects primordial neutrinos decoupling: Direct Simulation Monte Carlo approach
Maksym Ovchynnikov, Vsevolod Syvolap
Cosmological observations from Big Bang Nucleosynthesis and the Cosmic Microwave Background (CMB) offer crucial insights into the Early Universe, enabling us to trace its evolution…
High-energy neutrino signals from supernova explosions: a new window into dark photon parameter space
Vsevolod Syvolap, Oleg Ruchayskiy
Dark photons, hypothetical feebly interacting massive vector bosons, appear in many extensions of the Standard Model. This study investigates their production and subsequent decay…