Experimental targets for photon couplings of the QCD axion
Sign Up to like & getrecommendations! Published in 2017 at "Journal of High Energy Physics"
DOI: 10.1007/jhep02(2018)006
Abstract: A bstractThe QCD axion’s coupling to photons is often assumed to lie in a narrow band as a function of the axion mass. We demonstrate that several simple mechanisms, in addition to the photophilic clockwork… read more here.
Keywords: experimental targets; photon couplings; targets photon; axion ... See more keywords
A viable QCD axion in the MeV mass range
Sign Up to like & getrecommendations! Published in 2017 at "Journal of High Energy Physics"
DOI: 10.1007/jhep07(2018)092
Abstract: A bstractThe QCD axion is one of the most compelling solutions of the strong CP problem. There are major current efforts into searching for an ultralight, invisible axion, which is believed to be the only… read more here.
Keywords: mev mass; strong problem; qcd axion; axion ... See more keywords
The QCD axion and unification
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep11(2019)093
Abstract: Abstract The QCD axion is one of the most appealing candidates for the dark matter in the Universe. In this article, we discuss the possibility to predict the axion mass in the context of a… read more here.
Keywords: qcd axion; axion unification; axion; mass ... See more keywords
Can axion clumps be formed in a pre-inflationary scenario?
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2021/02/015
Abstract: The QCD axion and an axion-like particle (ALP) are compelling candidates of dark matter. For the QCD axion, it is known that when the Peccei-Quinn (PQ) symmetry is spontaneously broken after inflation, the large initial… read more here.
Keywords: clumps formed; axion; clump formation; axion clumps ... See more keywords
Global view of QCD axion stars
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.100.063002
Abstract: Taking a comprehensive view, including a full range of boundary conditions, we reexamine QCD axion star solutions based on the relativistic Klein-Gordon equation (using the Ruffini-Bonazzola approach) and its non-relativistic limit, the Gross-Pitaevskii equation. A… read more here.
Keywords: qcd axion; klein gordon; view; axion stars ... See more keywords
Composite neutrinos and the QCD axion: Baryogenesis, dark matter, small Dirac neutrino masses, and vanishing neutron electric dipole moment
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review D"
DOI: 10.1103/physrevd.105.015024
Abstract: We consider a chiral gauge theory from which light composite Dirac neutrinos dynamically emerge, augmented by a QCD axion to solve the strong CP problem. We show that an interplay between the composite sector and… read more here.
Keywords: dark matter; qcd axion; dirac; baryogenesis ... See more keywords
Black Hole Mergers and the QCD Axion at Advanced LIGO
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review D"
DOI: 10.1103/physrevd.95.043001
Abstract: In the next few years, Advanced LIGO (aLIGO) may see gravitational waves (GWs) from thousands of black hole (BH) mergers. This marks the beginning of a new precision tool for physics. Here we show how… read more here.
Keywords: advanced ligo; black hole; axion; hole mergers ... See more keywords
Searching for the QCD Axion with Gravitational Microlensing.
Sign Up to like & getrecommendations! Published in 2017 at "Physical review letters"
DOI: 10.1103/physrevlett.119.021101
Abstract: The phase transition responsible for axion dark matter (DM) production can create large amplitude isocurvature perturbations, which collapse into dense objects known as axion miniclusters. We use microlensing data from the EROS survey and from… read more here.
Keywords: searching qcd; axion; gravitational microlensing; axion gravitational ... See more keywords
The minimal UV-induced effective QCD axion theory
Sign Up to like & getrecommendations! Published in 2022 at "Modern Physics Letters A"
DOI: 10.1142/s0217732322500559
Abstract: The characteristic axion couplings could be generated via effective couplings between the Standard Model (SM) fermions to a pseudo-Goldstone from a high-scale U(1) Peccei–Quinn (PQ) symmetry breaking. Assuming that the UV-induced effective operators generate necessary… read more here.
Keywords: minimal induced; effective qcd; qcd axion; symmetry breaking ... See more keywords