[HTML][HTML] Feebly-interacting particles: FIPs 2022 workshop report

C Antel, M Battaglieri, J Beacham, C Boehm… - The European Physical …, 2023 - Springer
Particle physics today faces the challenge of explaining the mystery of dark matter, the origin
of matter over anti-matter in the Universe, the origin of the neutrino masses, the apparent …

Improved hot dark matter bound on the QCD axion

A Notari, F Rompineve, G Villadoro - Physical Review Letters, 2023 - APS
We obtain a reliable cosmological bound on the axion mass ma by (1) deriving the
production rate directly from pion-pion scattering data, which overcomes the breakdown of …

Cosmic neutrino background detection in large-neutrino-mass cosmologies

J Alvey, M Escudero, N Sabti, T Schwetz - Physical Review D, 2022 - APS
The cosmic neutrino background (CNB) is a definite prediction of the standard cosmological
model and its direct discovery would represent a milestone in cosmology and neutrino …

Neutrino cosmology after DESI: tightest mass upper limits, preference for the normal ordering, and tension with terrestrial observations

JQ Jiang, W Giare, S Gariazzo, MG Dainotti… - arXiv preprint arXiv …, 2024 - arxiv.org
The recent DESI Baryon Acoustic Oscillation measurements have led to tight upper limits on
the neutrino mass sum, potentially in tension with oscillation constraints requiring $\sum m …

A new probe of relic neutrino clustering using cosmogenic neutrinos

V Brdar, PSB Dev, R Plestid, A Soni - Physics Letters B, 2022 - Elsevier
We propose a new probe of cosmic relic neutrinos (CνB) using their resonant scattering
against cosmogenic neutrinos. Depending on the lightest neutrino mass and the energy …

Unveiling neutrino halos with CMB lensing

SC Hotinli, N Sabti, J North, M Kamionkowski - Physical Review D, 2023 - APS
The existence of a cosmic neutrino background has been inferred indirectly from
cosmological surveys through its effect on the linear-theory evolution of primordial density …

Living at the Edge: A Critical Look at the Cosmological Neutrino Mass Bound

D Naredo-Tuero, M Escudero… - arXiv preprint arXiv …, 2024 - arxiv.org
Cosmological neutrino mass bounds are becoming increasingly stringent. The latest limit
within $\Lambda $ CDM from Planck 2018+ ACT lensing+ DESI is $\sum m_\nu< 0.072\,{\rm …

Model marginalized constraints on neutrino properties from cosmology

E Di Valentino, S Gariazzo, O Mena - Physical Review D, 2022 - APS
We present robust, model-marginalized limits on both the total neutrino mass (∑ m ν) and
abundances (N eff) to minimize the role of parametrizations, priors and models when …

Influence of local structure on relic neutrino abundances and anisotropies

F Zimmer, CA Correa, S Ando - Journal of Cosmology and …, 2023 - iopscience.iop.org
Gravitational potentials of the Milky Way and extragalactic structures can influence the
propagation of the cosmic neutrino background (CNB). Of particular interest to future CNB …

A seesaw model for large neutrino masses in concordance with cosmology

M Escudero, T Schwetz, J Terol-Calvo - Journal of High Energy Physics, 2023 - Springer
A bstract Cosmological constraints on the sum of the neutrino masses can be relaxed if the
number density of active neutrinos is reduced compared to the standard scenario, while at …