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QCD axion as a bridge between string theory and flavor physics

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Title
QCD axion as a bridge between string theory and flavor physics
Author(s)
Y. H. Ahn
Publication Date
2016-04
Journal
PHYSICAL REVIEW D, v.93, no.8, pp.085026 -
Publisher
AMER PHYSICAL SOC
Abstract
We construct a string-inspired model, motivated by the flavored Peccei-Quinn (PQ) axions, as a useful bridge between flavor physics and string theory. The key feature is two anomalous gauged U(1) symmetries, responsible for both the fermion mass hierarchy problem of the standard model and the strong CP problem, that combine string theory with flavor physics and severely constrain the form of the F- and D-term contributions to the potential. In the context of supersymmetric moduli stabilization we stabilize the size moduli with positive masses while leaving two axions massless and one axion massive. We demonstrate that, while the massive gauge bosons eat the two axionic degrees of freedom, two axionic directions survive to low energies as the flavored PQ axions. © 2016 American Physical Society
URI
http://pr.ibs.re.kr/handle/8788114/2504
DOI
10.1103/PhysRevD.93.085026
ISSN
1550-7998
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > Journal Papers (저널논문)
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