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Supersymmetric and non-supersymmetric models without catastrophic Goldstone bosons

Braathen, Johannes; Goodsell, Mark D.; Staub, Florian 1,2
1 Institut für Theoretische Physik (ITP), Karlsruher Institut für Technologie (KIT)
2 Institut für Kernphysik (IKP), Karlsruher Institut für Technologie (KIT)


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.

Verlagsausgabe §
DOI: 10.5445/IR/1000076841
Veröffentlicht am 23.11.2017
DOI: 10.1140/epjc/s10052-017-5303-x
Zitationen: 36
Web of Science
Zitationen: 30
Zitationen: 31
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Kernphysik (IKP)
Institut für Theoretische Physik (ITP)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 11.2017
Sprache Englisch
Identifikator ISSN: 1434-6044, 1434-6052
KITopen-ID: 1000076841
HGF-Programm 51.01.01 (POF III, LK 01) Teilchenphysik
Erschienen in The European physical journal / C
Verlag Springer Verlag
Band 77
Heft 11
Seiten Art. Nr.: 757
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Nachgewiesen in Scopus
Web of Science
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