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Spontaneous charge breaking in the NMSSM : dangerous or not?

Krauss, Manuel Ernst; Opferkuch, Toby; Staub, Florian

We investigate the impact of charge-breaking minima on the vacuum stability of the NMSSM. We concentrate on the case of vanishing A-terms in the sfermion sector, i.e. the only potentially dangerous sources of charge breaking are vacuum expectation values of the charged Higgs fields. We find that, in contrast to Two-Higgs-Doublet Models like the MSSM, at both tree and loop level there exist global charge-breaking minima. Consequently, many regions of parameter space are rendered metastable, which otherwise would have been considered stable if these charge-breaking minima were neglected. However, the inclusion of these new scalar field directions has little impact on otherwise metastable vacuum configurations.

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Verlagsausgabe §
DOI: 10.5445/IR/1000070396
Veröffentlicht am 28.11.2017
DOI: 10.1140/epjc/s10052-017-4908-4
Zitationen: 5
Web of Science
Zitationen: 5
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Theoretische Physik (ITP)
Institut für Kernphysik (IKP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2017
Sprache Englisch
Identifikator ISSN: 1434-6044, 1434-6052
KITopen-ID: 1000070396
HGF-Programm 51.01.01 (POF III, LK 01)
Erschienen in The European physical journal / C
Band 77
Heft 5
Seiten Art. Nr.: 331
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
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