Spontaneous charge breaking in the NMSSM: dangerous or not?

Autor:	Manuel E. Krauss, Toby Opferkuch, Florian Staub
Jazyk:	angličtina
Rok vydání:	2017
Předmět:	Higgs Boson Minimal Supersymmetric Standard Model Higgs Mass Vacuum Stability Charge Conserve Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Zdroj:	European Physical Journal C: Particles and Fields, Vol 77, Iss 5, Pp 1-7 (2017)
Druh dokumentu:	article
ISSN:	1434-6044 1434-6052
DOI:	10.1140/epjc/s10052-017-4908-4
Popis:	Abstract 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.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/80cf205ee13c4c5c90652d57b357eeb1 Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF