Fermion mass hierarchy from radiative corrections

Balakrishna, B S

doi:10.1103/physrevlett.60.1602

Cited by 103 publications

(62 citation statements)

References 20 publications

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“…The second term represents the sum of the last three diagrams, and involves a 4-loop dimensionless integral ǫ (4) Υ . Although we have not calculated ǫ and ǫ…”

Section: Strange and Down Quark Massesmentioning

confidence: 99%

“…In an interesting scheme of this type [4], a pair of vectorlike fermions mix with the standard model quarks such that only the top and bottom quarks have tree-level masses. A charge −1/3 scalar then couples the third generation quarks to the other quarks, resulting in rank-two mass matrices at 1 loop and rank-three mass matrices at 2 loops.…”

Section: Introductionmentioning

confidence: 99%

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Quark and lepton masses from top loops

Dobrescu

Fox

2008

J. High Energy Phys.

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Assuming that the leptons and quarks other than top are massless at tree level, we show that their masses may be induced by loops involving the top quark. As a result, the generic features of the fermion mass spectrum arise from combinations of loop factors. Explicitly, we construct a renormalizable model involving a few new particles, which leads to 1-loop bottom and tau masses, a 2-loop charm mass, 3-loop muon and strange masses, and 4-loop masses for first generation fermions. This realistic pattern of masses does not require any symmetry to differentiate the three generations of fermions. The new particles may produce observable effects in future experiments searching for µ → e conversion in nuclei, rare meson decays, and other processes.

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“…The second term represents the sum of the last three diagrams, and involves a 4-loop dimensionless integral ǫ (4) Υ . Although we have not calculated ǫ and ǫ…”

Section: Strange and Down Quark Massesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quark and lepton masses from top loops

Dobrescu

Fox

2008

J. High Energy Phys.

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“…The story is similar for theories of radiative fermion mass generation [26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42] in which loop corrections generate the up mass from the charm mass and the charm mass from the top mass, and likewise for the quark mass mixings. In either case, these constructions increase the overall operator dimension of M (φ), and can alleviate explicit PQ violation arising from det M (φ).…”

Section: Jhep06(2010)074mentioning

confidence: 90%

Axion protection from flavor

Cheung

2010

J. High Energ. Phys.

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The QCD axion fails to solve the strong CP problem unless all explicit PQ violating, Planck-suppressed, dimension n < 10 operators are forbidden or have exponentially small coefficients. We show that all theories with a QCD axion contain an irreducible source of explicit PQ violation which is proportional to the determinant of the Yukawa interaction matrix of colored fermions. Generically, this contribution is of low operator dimension and will drastically destabilize the axion potential, so its suppression is a necessary condition for solving the strong CP problem. We propose a mechanism whereby the PQ symmetry is kept exact up to n = 12 with the help of the very same flavor symmetries which generate the hierarchical quark masses and mixings of the SM. This "axion flavor protection" is straightforwardly realized in theories which employ radiative fermion mass generation and grand unification. A universal feature of this construction is that the heavy quark Yukawa couplings are generated at the PQ breaking scale.

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“…Compared with the fermion masses in the revived original LRSM, the neutrino masses are still induced by the linear seesaw, while the SM charged fermion masses additionally have a universal seesaw [50,51] contribution (the second terms in the charged fermion masses m u,d,e ). It is easy to find that for φ 1,2 = O(1 − 100 eV), χ L1,2 < ϕ = 174 GeV and χ R1,2 = O(1 − 100 TeV), the neutrino masses can naturally arrive at the sub-eV scale while the charged fermion masses should mostly come from the universal seesaw.…”

Section: A Realistic Modelmentioning

confidence: 99%

Neutrinoless double beta decay in the left-right symmetric models for linear seesaw

2016

J. High Energ. Phys.

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Fermion mass hierarchy from radiative corrections

Cited by 103 publications

References 20 publications

Quark and lepton masses from top loops

Quark and lepton masses from top loops

Axion protection from flavor

Neutrinoless double beta decay in the left-right symmetric models for linear seesaw

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