The landscape of QCD axion models

L Di Luzio, M Giannotti, E Nardi, L Visinelli - Physics Reports, 2020 - Elsevier
We review the landscape of QCD axion models. Theoretical constructions that extend the
window for the axion mass and couplings beyond conventional regions are highlighted and …

[HTML][HTML] Feebly-interacting particles: FIPs 2020 workshop report

P Agrawal, M Bauer, J Beacham, A Berlin… - The European Physical …, 2021 - Springer
With the establishment and maturation of the experimental programs searching for new
physics with sizeable couplings at the LHC, there is an increasing interest in the broader …

Axion dark matter

CB Adams, N Aggarwal, A Agrawal… - arxiv preprint arxiv …, 2022 - arxiv.org
Axions are well-motivated dark matter candidates with simple cosmological production
mechanisms. They were originally introduced to solve the strong CP problem, but also arise …

Flavor probes of axion-like particles

M Bauer, M Neubert, S Renner, M Schnubel… - Journal of High Energy …, 2022 - Springer
A bstract Axions and axion-like particles (ALPs) are well-motivated low-energy relics of high-
energy extensions of the Standard Model (SM). We investigate the phenomenology of an …

The low-energy effective theory of axions and ALPs

M Bauer, M Neubert, S Renner, M Schnubel… - Journal of High Energy …, 2021 - Springer
A bstract Axions and axion-like particles (ALPs) are well-motivated low-energy relics of high-
energy extensions of the Standard Model, which interact with the known particles through …

New physics searches at kaon and hyperon factories

E Goudzovski, D Redigolo, K Tobioka… - Reports on Progress …, 2023 - iopscience.iop.org
Rare meson decays are among the most sensitive probes of both heavy and light new
physics. Among them, new physics searches using kaons benefit from their small total decay …

Gravitational waves from domain walls in Pulsar Timing Array datasets

RZ Ferreira, A Notari, O Pujolas… - Journal of Cosmology …, 2023 - iopscience.iop.org
We present a model-independent search for a gravitational wave background from cosmic
domain walls (DWs) in the NANOGrav 12.5 years dataset and International PTA Data …

Axionic domain walls at Pulsar Timing Arrays: QCD bias and particle friction

S Blasi, A Mariotti, A Rase, A Sevrin - Journal of High Energy Physics, 2023 - Springer
A bstract The recent results from the Pulsar Timing Array (PTA) collaborations show the first
evidence for the detection of a stochastic background of gravitational waves at the nHz …

An even lighter QCD axion

L Di Luzio, B Gavela, P Quilez, A Ringwald - Journal of High Energy …, 2021 - Springer
A bstract We explore whether the axion which solves the strong CP problem can naturally be
much lighter than the canonical QCD axion. The\({Z} _ {\mathcal {N}}\) symmetry proposed …

Heavy axion opportunities at the DUNE near detector

KJ Kelly, S Kumar, Z Liu - Physical Review D, 2021 - APS
While the QCD axion is often considered to be necessarily light (≲ eV), recent work has
opened a viable and interesting parameter space for heavy axions, which solve both the …