Compact model for quarks and leptons via flavored axions

被引：16

作者：

Ahn, Y. H. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China

来源：

PHYSICAL REVIEW D | 2018年 / 98卷 / 03期

关键词：

NEUTRINO; PARAMETRIZATION; SYMMETRY; CONSERVATION; PHOTON; MASSES; STAR;

D O I：

10.1103/PhysRevD.98.035047

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We show how the scales responsible for the Peccei-Quinn (PQ), seesaw, and Froggatt-Nielsen (FN) mechanisms can be fixed by constructing a compact model to resolve rather recent, but increasingly important issues in astroparticle physics, including quark and leptonic mixings and CP violations, high-energy neutrinos, the QCD axion, and axion cooling of stars. The model is motivated by the flavoredPQ symmetry to unify flavor physics and string theory. The QCD axion decay constant congruent to the seesaw scale-through its connection to the astroparticle constraints of both the stellar evolution induced by the flavored-axion bremsstrahlung off electrons e(+)Ze -> Ze + e + A(i) and the rare flavor-changing decay process induced by the flavored-axion K+ -> pi(+) + A(i) is shown to be fixed at F-A = 3.56(-0).(+0.84)(84) x 10(10) GeV. Consequently, the QCD axion mass m(a) = 1.54(-0.29)(+0.48) x 10(-4) eV, the Compton wavelength of its oscillation lambda(a) = 8.04(-1.90)(+1.90) mm, and the axion-to-neutron coupling g(Ann) = 2.14(-0.41)(+0.66) x 10(-12). Subsequently, the scale associated with the FN mechanism is dynamically fixed, Lambda = 2.04(-0.48)(+0.48) x 10(11) GeV, through its connection to the standard model fermion masses and mixings, and such a fundamental scale might give a hint ofwhere some string moduli are stabilized in type IIB string vacua. In the near future, theNA62 experiment-which is expected to reach a sensitivity of Br(K+ -> pi(+) + A(i)) < 1.0 x 10(-12)-will probe the flavored axions or exclude themodel if the astrophysical constraint of star cooling is really responsible for the flavored axion.

引用

页数：13

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