Journal
PHYSICS LETTERS B
Volume 725, Issue 4-5, Pages 322-326Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2013.07.025
Keywords
Z '; Seesaw; Singlet scalar; 125 GeV Higgs boson
Funding
- Deutsche Forschungsgemeinschaft through the Research Training Group grant Physics at Hadron Accelerators [GRK1102]
- Bundesministerium fur Bildung und Forschung within the Forderschwerpunkt Elementary Particle Physics
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The 1-loop renormalization group equations for the minimal Z' models encompassing a type-I seesaw mechanism are studied in the light of the 125 GeV Higgs boson observation. This model is taken as a benchmark for the general case of singlet extensions of the standard model. The most important result is that negative scalar mixing angles are favored with respect to positive values. Further, a minimum value for the latter exists, as well as a maximum value for the masses of the heavy neutrinos, depending on the vacuum expectation value of the singlet scalar. (C) 2013 Elsevier B.V. All rights reserved.
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