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Phenomenology of the inflation-inspired NMSSM at the electroweak scale

Hollik, Wolfgang Gregor; Liebler, Stefan; Moortgat-Pick, Gudrid; Paßehr, Sebastian; Weiglein, Georg

Abstract:
The concept of Higgs inflation can be elegantly incorporated in the Next-to-Minimal Supersymmetric Standard Model (NMSSM). A linear combination of the two Higgs-doublet fields plays the role of the inflaton which is non-minimally coupled to gravity. This non-minimal coupling appears in the low-energy effective superpotential and changes the phenomenology at the electroweak scale. While the field content of the inflation-inspired model is the same as in the NMSSM, there is another contribution to the μ term in addition to the vacuum expectation value of the singlet. We explore this extended parameter space and point out scenarios with phenomenological differences compared to the pure NMSSM. A special focus is set on the electroweak vacuum stability and the parameter dependence of the Higgs and neutralino sectors. We highlight regions which yield a SM-like 125GeV Higgs boson compatible with the experimental observations and are in accordance with the limits from searches for additional Higgs bosons. Finally, we study the impact of the non-minimal coupling to gravity on the Higgs mixing and in turn on the decays of the Higgs bosons in ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000090842
Veröffentlicht am 11.02.2019
Originalveröffentlichung
DOI: 10.1140/epjc/s10052-019-6561-6
Seitenaufrufe: 16
seit 13.02.2019
Downloads: 17
seit 13.02.2019
Zugehörige Institution(en) am KIT Institut für Theoretische Physik (ITP)
Institut für Theoretische Teilchenphysik (TTP)
Institut für Kernphysik (IKP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2019
Sprache Englisch
Identifikator ISSN: 1434-6044, 1434-6052
urn:nbn:de:swb:90-908420
KITopen-ID: 1000090842
Erschienen in The European physical journal / C
Band 79
Heft 1
Seiten Article: 75
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Vorab online veröffentlicht am 28.01.2019
Nachgewiesen in Scopus
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