Dark QCD perspective inspired by strong CP problem at QCD scale
Sign Up to like & getrecommendations! Published in 2024 at "Journal of High Energy Physics"
DOI: 10.1007/jhep01(2025)077
Abstract: We discuss a QCD-scale composite axion model arising from dark QCD coupled to QCD. The presently proposed scenario not only solves the strong CP problem, but also is compatible with the preheating setup for the… read more here.
Keywords: qcd; axion; qcd scale; dark qcd ... See more keywords
Solving the strong CP problem with non-conventional CP
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep03(2019)040
Abstract: A bstractA very simple model is presented where all CP violation in Nature is spontaneous in origin. The CKM phase is generated unsuppressed and the strong CP problem is solved with only moderately small couplings… read more here.
Keywords: problem; solving strong; non conventional; strong problem ... 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
Solving the strong CP problem without axions
Sign Up to like & getrecommendations! Published in 2024 at "Journal of High Energy Physics"
DOI: 10.1007/jhep08(2024)214
Abstract: We formulate general conditions under which the strong CP problem is solved by spontaneous CP violation. Quark-mass matrix elements are polynomials in the CP-breaking order parameters, engineered such that their determinant is a real constant.… read more here.
Keywords: without axions; problem; strong problem; problem without ... See more keywords
A flavorful factoring of the strong CP problem
Sign Up to like & getrecommendations! Published in 2018 at "Journal of High Energy Physics"
DOI: 10.1007/jhep12(2018)035
Abstract: A bstractMotivated by the intimate connection between the strong CP problem and the flavor structure of the Standard Model, we present a flavor model that revives and extends the classic mu = 0 solution to… read more here.
Keywords: factoring strong; flavor; strong problem; quark ... See more keywords
Axionless Solution to the Strong CP Problem – two-zeros textures of the quark and lepton mass matrices and neutrino CP violation –
Sign Up to like & getrecommendations! Published in 2025 at "Progress of Theoretical and Experimental Physics"
DOI: 10.1093/ptep/ptaf131
Abstract: CP invariance is a very attractive solution to the strong CP problem in QCD. This solution requires the vanishing arg [det Md detMu], where the Md and Mu are the mass matrices for the down- and up-type quarks.… read more here.
Keywords: solution strong; mass matrices; mass; two zeros ... See more keywords
Small instantons and the strong CP problem in composite Higgs models
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review D"
DOI: 10.1103/physrevd.104.075011
Abstract: We show that QCD instantons can generate large effects at small length scales in the ultraviolet in standard composite Higgs models that utilise partial compositeness. This has important implications for possible solutions of the strong… read more here.
Keywords: composite higgs; higgs models; small instantons; strong problem ... See more keywords
δCP for leptons and a new take on CP physics with the FSM
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Modern Physics A"
DOI: 10.1142/s0217751x21502365
Abstract: A bonus of the framed standard model (FSM), constructed initially to explain the mass and mixing patterns of quarks and leptons, is a solution (without axions) of the strong CP problem by cancelling the theta-angle… read more here.
Keywords: physics; leptons new; new take; strong problem ... See more keywords