Why is the top quark much heavier than other fermions?

Abstract

The recent ATLAS and CMS experiments show the first observations of a new particle in the search for the Standard Model Higgs boson at the LHC. We revisit the theoretical inconsistency of the fundamental high-energy cutoff with the parity-violating gauge symmetry of local quantum field theory for the standard model. This inconsistency suggests high-dimensional operators of fermion interactions, which are attributed to the quantum gravity. In this letter, recalling the minimal dynamical symmetry-breaking mechanism, we show that it is energetically favorable for the top quark to acquire its mass via spontaneous symmetry breaking, whereas other fermions acquire their masses via explicit symmetry breaking.

13 pages, the published version in Phys. Lett. B 721 (2013) 347. arXiv admin note: text overlap with arXiv:1110.1317

References in corpus (3)

• 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
• The phase structure of Einstein-Cartan theory

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• Resonant and nonresonant new phenomena of four-fermion operators for experimental searches
• Phenomenology at the LHC of composite particles from strongly interacting Standard Model fermions via four-fermion operators of NJL type
• Hierarchy spectrum of SM fermions: from top quark to electron neutrino
• $W$ boson mass tension caused by its right-handed gauge coupling at high energies?
• Higgs boson origin from a gauge symmetric theory of massive composite particles and massless $W^{\pm }$ and $Z^0$ bosons at the TeV scale
• Spontaneous Peccei-Quinn symmetry breaking renders sterile neutrino, axion and $\chi$boson to be candidates for dark matter particles
• Critical fermion density for restoring spontaneously broken symmetry