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The Minimal Flavour Violating Axion

F. Arias-Aragon
(
- Madrid, Autonoma U. and
- Madrid, IFT
)
,
L. Merlo
(
- Madrid, Autonoma U. and
- Madrid, IFT
)

Sep 20, 2017

11 pages

Published in:

JHEP 10 (2017) 168,
JHEP 11 (2019) 152 (erratum)

Published: Oct 24, 2017

e-Print:

1709.07039 [hep-ph]

DOI:

10.1007/JHEP10(2017)168,
10.1007/JHEP11(2019)152 (erratum)

View in:

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Abstract: (arXiv)

The solution to the Strong CP problem is analysed within the Minimal Flavour Violation (MFV) context. An Abelian factor of the complete flavour symmetry of the fermionic kinetic terms may play the role of the Peccei-Quinn symmetry in traditional axion models. Its spontaneous breaking, due to the addition of a complex scalar field to the Standard Model scalar spectrum, generates the MFV axion, which may redefine away the QCD theta parameter. It differs from the traditional QCD axion for its couplings that are governed by the fermion charges under the axial Abelian symmetry. It is also distinct from the so-called Axiflavon, as the MFV axion does not describe flavour violation, while it does induce flavour non-universality effects. The MFV axion phenomenology is discussed considering astrophysical, collider and flavour data.

Note:

12 pages, 1 table. V2: References added; version accepted for publication in JHEP

Beyond Standard Model
Global Symmetries
CP violation
Quark Masses and SM Parameters
new physics
symmetry: flavor
flavor: violation: minimal
quantum chromodynamics: axion
model: axion
axion: mass

References(163)

Figures(0)

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