Regular Article - Theoretical Physics
Decoupling of the right-handed neutrino contribution to the Higgs mass in supersymmetric models
Santa Cruz Institute for Particle Physics, University of California, 95064, Santa Cruz, CA, USA
Revised: 23 July 2013
Published online: 23 August 2013
Recently, it has been argued that in the supersymmetric extension of the seesaw-extended Standard Model, heavy right-handed neutrinos and sneutrinos may give corrections as large as a few GeV to the mass of the lightest neutral CP-even Higgs boson, even if the soft supersymmetry-breaking parameters are of order the electroweak scale. The presence of such large corrections would render precise Higgs masses incalculable from measurable low-energy parameters. We show that this is not the case: decoupling is preserved in the appropriate sense and right-handed (s)neutrinos, if they exist, have negligible impact on the physical Higgs masses.
Key words: Higgs Boson / Minimal Supersymmetric Standard Model / Higgs Mass / Effective Field Theory / Light Neutrino Masse
© Springer-Verlag Berlin Heidelberg and Società Italiana di Fisica 2013