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Light Higgs bosons in the general NMSSM

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Title
Light Higgs bosons in the general NMSSM
Author(s)
Kiwoon Choi; Im, SH; Jeong, KS; Chan Beom Park
Publication Date
2019-11
Journal
EUROPEAN PHYSICAL JOURNAL C, v.79, no.11, pp.956 -
Publisher
SPRINGER
Abstract
Physics beyond the Standard Model (SM) may manifest itself as small deviations from the SM predictions for Higgs signal strengths at 125 GeV. Then, a plausible and interesting possibility is that the Higgs sector is extended and at the weak scale there appears an additional Higgs boson weakly coupled to the SM sector. Combined with the LEP excess in e+e--> Z(h -> bb over bar) rightarrow Z(h) the diphoton excess around 96 GeV recently reported by CMS may suggest such a possibility. We examine if those LEP and CMS excesses can be explained simultaneously by a singlet-like Higgs boson in the general next-to-minimal supersymmetric Standard Model (NMSSM). Higgs mixing in the NMSSM relies on the singlet coupling to the MSSM Higgs doublets and the higgsino mass parameter, and thus is subject to the constraints on these supersymmetric parameters. We find that the NMSSM can account for both the LEP and CMS excesses at 96 GeV while accommodating the observed 125 GeV SM-like Higgs boson. Interestingly, the required mixing angles constrain the heavy doublet Higgs boson to be heavier than about 500 GeV. We also show that the viable region of mixing parameter space is considerably modified if the higgsino mass parameter is around the weak scale, mainly because of the Higgs coupling to photons induced by the charged higgsinos. © The Author(s) 2019
URI
https://pr.ibs.re.kr/handle/8788114/6789
ISSN
1434-6044
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > Journal Papers (저널논문)
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