… of visible axion models where the axion mass is enhanced by strong dynamics in a mirrored
copy of the Standard Model in … In particular, we examine the consistency of the models with …

… Intriguingly, in our model, the value of the axion mass can be in … This axion is therefore quite
“visible” and can be searched for in … the initial conditions at MU for our visible axion model. …

… We show that such a signal can be originated from a cosmological first-order phase transition
(PT) within a well-motivated heavy (visible) QCD axion model. Considering the Peccei-…

… MODEL OF VISIBLE HEAVY QCD AXION In this section, we first review a model of visible
heavy QCD axions [13]. In this model, a copy of the Standard Model is introduced following …

… In this paper, we revisit a visible heavy QCD axion model in light of the recent reports on …
model, the axion is made heavy with the help of the mirror copied sector of the Standard Model, …

… Standard Model which provides an implementation of the π-axion scenario. In … QCD sector
of the dark Standard Model, which will be the main focus of this work. Analogous to the visible …

… In these circumstances we show how a naturally light invisible axion it is almost a singlet …
QCD 2 /v 10 5 eV is the instanton induced mass we have used MPl 1019 GeV and v …

… a model that solves the strong CP problem via an axion para… space predicts a visible
Grand Color axion of mass above the … of our model and that of the standard QCD axion have …

… 2 Examples of horizontal enlargement of the parameter space towards the right of the canonical
QCD axion band are heavy axion models that solve the strong CP problem at low scales …

… Visible matter in the current Universe is a consequence of the phase transition of the strong
force, quantum chromodynamics (QCD… [1] in the Standard Model. Recently it attracted a great …