Skip to Main content Skip to Navigation
Journal articles

Supersymmetric and non-supersymmetric models without catastrophic Goldstone bosons

Abstract : The calculation of the Higgs mass in general renormalisable field theories has been plagued by the so-called “Goldstone Boson Catastrophe,” where light (would-be) Goldstone bosons give infra-red divergent loop integrals. In supersymmetric models, previous approaches included a workaround that ameliorated the problem for most, but not all, parameter space regions, while giving divergent results everywhere for non-supersymmetric models! We present an implementation of a general solution to the problem in the public code SARAH, along with new calculations of some necessary loop integrals and generic expressions. We discuss the validation of our code in the Standard Model, where we find remarkable agreement with the known results. We then show new applications in Split SUSY, the NMSSM, the Two-Higgs-Doublet Model, and the Georgi–Machacek model. In particular, we take some first steps to exploring where the habit of using tree-level mass relations in non-supersymmetric models breaks down, and show that the loop corrections usually become very large well before naive perturbativity bounds are reached.
Document type :
Journal articles
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-01645368
Contributor : INSPIRE HEP Connect in order to contact the contributor
Submitted on : Thursday, November 23, 2017 - 1:57:28 AM
Last modification on : Monday, December 6, 2021 - 4:22:02 PM

Links full text

Identifiers

Citation

Johannes Braathen, Mark D. Goodsell, Florian Staub. Supersymmetric and non-supersymmetric models without catastrophic Goldstone bosons. European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2017, 77 (11), pp.757. ⟨10.1140/epjc/s10052-017-5303-x⟩. ⟨hal-01645368⟩

Share

Metrics

Record views

62