# Family Gauge Bosons with an Inverted Mass Hierarchy

@article{Koide2012FamilyGB, title={Family Gauge Bosons with an Inverted Mass Hierarchy}, author={Yoshio Koide and Toshifumi Yamashita}, journal={Physics Letters B}, year={2012}, volume={711}, pages={384-389} }

Abstract A model that gives family gauge bosons with an inverted mass hierarchy is proposed, stimulated by Suminoʼs cancellation mechanism for the QED radiative correction to the charged lepton masses. The Sumino mechanism cannot straightforwardly be applied to SUSY models because of the nonrenormalization theorem. In this Letter, an alternative model which is applicable to a SUSY model is proposed. It is essential that family gauge boson masses m ( A i j ) in this model is given by an inverted…

## 8 Citations

Hint of family gauge bosons with an inverted mass hierarchy from the observed tau decays

- Physics
- 2014

Abstract The present data show a deviation from the e-m universality e ≡ e μ − e e = 0.0020 ± 0.0016 . If we consider that the deviation originates in a mass difference between family gauge bosons A…

A modified version of the Koide formula from flavor nonets in a scalar potential model and in a Yukawaon model

- PhysicsNuclear Physics B
- 2021

We present a modified version of the Koide formula from a scalar potential model or from a Yukawaon model, based on scalar fields set up in a nonet representation of the SU(3) flavor symmetry in the…

Can Mass of the Lightest Family Gauge Boson be of the Order of TeV

- Physics
- 2013

The observed sign of a deviation from the e-µ universality in tau decays suggests family gauge bosons with an inverted mass hierarchy. Under the constraints from the observed K 0 - ¯ K 0 and D 0 - ¯…

Muon–electron conversion in a family gauge boson model

- Physics
- 2016

We study the μ–e conversion in muonic atoms via an exchange of family gauge boson (FGB) A21 in a U(3) FGB model. Within the class of FGB model, we consider three types of family-number assignments…

Sumino's Cancellation Mechanism in an Anomaly-Free Model

- Physics
- 2016

An interesting family gauge boson (FGB) model (Model A) has been proposed by Sumino. The model can give FGBs with a considerably low energy scale in spite of the sever constraints form the observed…

Quark and lepton mass matrix model with only six family-independent parameters

- Physics
- 2015

We propose a unified mass matrix model for quarks and leptons, in which sixteen observables of mass ratios and mixings of the quarks and neutrinos are described by using no family number-dependent…

Charged lepton mass relations in a SUSY scenario

- PhysicsPhysics Letters B
- 2018

Abstract The observed charged lepton masses satisfy the relations K ≡ ( m e + m μ + m τ ) / ( m e + m μ + m τ ) 2 = 2 / 3 and κ ≡ m e m μ m τ / ( m e + m μ + m τ ) 3 = 1 / 486 with great accuracy.…

Effective valence quark model and a possible dip in $d\, {\rm Br}(B\to K\ell\bar{\ell})/dq^2$

- Physics
- 2014

In rare B meson decays B → Kl+l-, a possible contribution of l+l- emission via photon from the "spectator" quark q(q = u, d) in the B meson is investigated in addition to the conventional one . If…

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