Scales of Mass Generation for Quarks, Leptons and Majorana Neutrinos

Abstract

We study 2 --> n inelastic fermion-(anti)fermion scattering into multiple longitudinal weak gauge bosons and derive universal upper bounds on the scales of fermion mass generation by imposing unitarity of the S-matrix. We place new upper limits on the scales of fermion mass generation, independent of the electroweak symmetry breaking scale. We find that the strongest 2 --> n limits fall in a narrow range, 3-170 TeV (with n=2-24), depending on the observed fermion masses.

arXiv commentPhys. Rev. Lett.(in press), minor rewording

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• Neutrino Masses from Cosmological Probes
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• Estimating The Sensitivity Of The LHC To Electroweak Symmetry Breaking: Longitudinal-Goldstone Boson Equivalence As A Criterion
• Scale of fermion mass generation
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