Vectorlike $W^{\pm }$-boson coupling at TeV and third family fermion masses

Abstract

In the third fermion family and gauge symmetry of the Standard Model, we study the quark-quark, lepton-lepton and quark-lepton four-fermion operators in an effective theory at high energies. These operators have nontrivial contributions to the Schwinger-Dyson equations for fermion self-energy functions and the $W^{\pm }$-boson coupling vertex. As a result, the top-quark mass is generated via the spontaneous symmetry breaking of $⟨\bar{t}t⟩$-condensate and the $W^{\pm }$-boson coupling becomes approximately vectorlike at TeV scale. The bottom-quark, tau-lepton and tau-neutrino masses are generated via the explicit symmetry breaking of $W^{\pm }$-contributions and quark-lepton interactions. Their masses and Yukawa couplings are functions of the top-quark mass and Yukawa coupling. We qualitatively show the hierarchy of fermion masses and Yukawa couplings of the third fermion family. We also discuss the possible collider signatures due to the vectorlike (parity-restoration) feature of $W^{\pm }$-boson coupling at high energies.

The revised version to appear in Phys. Rev. D. The title has been modified. 23 pages and 5 figures

References in corpus (6)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• First measurement of the forward-backward charge asymmetry in top quark pair production
• The phase structure of Einstein-Cartan theory
• Ultraviolet fixed point and massive composite particles in TeV scales
• Resonant and nonresonant new phenomena of four-fermion operators for experimental searches

Cited by in corpus (10)

• Composite spin-1 resonances at the LHC
• Shedding New Light on Sterile Neutrinos from XENON1T Experiment
• An effective strong-coupling theory of composite particles in UV-domain
• Circular polarization of cosmic photons due to their interactions with Sterile neutrino dark matter
• Phenomenology at the LHC of composite particles from strongly interacting Standard Model fermions via four-fermion operators of NJL type
• $W$ boson mass tension caused by its right-handed gauge coupling at high energies?
• Cosmic Birefringence as a probe of dark matter nature: Sterile neutrino and dipolar dark matter
• Angular observables for spin discrimination in boosted diboson final states
• Diboson resonances within a custodially protected warped extra-dimensional scenario
• Spontaneous Peccei-Quinn symmetry breaking renders sterile neutrino, axion and $\chi$boson to be candidates for dark matter particles