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 …

Naturalness: past, present, and future

N Craig - The European Physical Journal C, 2023 - Springer
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Status of weak scale supersymmetry after LHC Run 2 and ton-scale noble liquid WIMP searches

H Baer, V Barger, D Sengupta, S Salam… - The European Physical …, 2020 - Springer
After completion of LHC Run 2, the ATLAS and CMS experiments had collected of order 139
fb− 1 of data at√ s= 13 TeV. While discovering a very Standard Model-like Higgs boson of …

Novel cosmological bounds on thermally-produced axion-like particles

L Caloni, M Gerbino, M Lattanzi… - Journal of Cosmology …, 2022 - iopscience.iop.org
We constrain the coupling of thermally-produced axion-like particles (here axions) with
photons and gluons, using data from the cosmic microwave background (CMB) spectra and …

Model of visible QCD axion

H Fukuda, K Harigaya, M Ibe, TT Yanagida - Physical Review D, 2015 - APS
We pursue a class of visible axion models where the axion mass is enhanced by strong
dynamics in a mirrored copy of the Standard Model in the line of the idea put forward by …

The quest for an intermediate-scale accidental axion and further ALPs

AG Dias, ACB Machado, CC Nishi, A Ringwald… - Journal of High Energy …, 2014 - Springer
A bstract The recent detection of the cosmic microwave background polarimeter experiment
BICEP2 of tensor fluctuations in the B-mode power spectrum basically excludes all plausible …

Axion dark matter in the post-inflationary Peccei-Quinn symmetry breaking scenario

A Ringwald, K Saikawa - Physical Review D, 2016 - APS
We consider extensions of the Standard Model in which a spontaneously broken global
chiral Peccei-Quinn (PQ) symmetry arises as an accidental symmetry of an exact ZN …

Window for preferred axion models

L Di Luzio, F Mescia, E Nardi - Physical Review D, 2017 - APS
We discuss phenomenological criteria for defining “axion windows,” namely regions in the
parameter space of the axion-photon coupling where realistic models live. Currently, the …

Minimal mirror twin Higgs

R Barbieri, LJ Hall, K Harigaya - Journal of High Energy Physics, 2016 - Springer
A bstract In a Mirror Twin World with a maximally symmetric Higgs sector the little hierarchy
of the Standard Model can be significantly mitigated, perhaps displacing the cutoff scale …

Flavourful axion phenomenology

F Björkeroth, EJ Chun, SF King - Journal of High Energy Physics, 2018 - Springer
A bstract We present a comprehensive discussion of the phenomenology of flavourful
axions, including both standard Peccei-Quinn (PQ) axions, associated with the solution to …