Enhanced Higgs associated production with a top quark pair in the NMSSM with light singlets

Badziak, Marcin; Wagner, Carlos E.  M.

doi:10.1007/JHEP02(2017)050

Title: Enhanced Higgs associated production with a top quark pair in the NMSSM with light singlets

Journal Article · Thu Feb 09 04:00:00 UTC 2017 · Journal of High Energy Physics (Online)

DOI: https://doi.org/10.1007/JHEP02(2017)050 · OSTI ID:1413719

Badziak, Marcin ^[1]; Wagner, Carlos E. M. ^[2]

Univ. of Warsaw (Poland). Inst. of Theoretical Physics; Lawrence Berkeley National Lab. (LBNL) and Univ. of California, Berkeley, CA (United States). Dept. of Physics and Theoretical Physics Group, Berkeley Center for Theoretical Physics
Univ. of Chicago, IL (United States). Enrico Fermi Inst., Kavli Inst. for Cosmological Physics; Argonne National Lab. (ANL), Argonne, IL (United States)

Precision measurements of the 125 GeV Higgs resonance recently discovered at the LHC have determined that its properties are similar to the ones of the Standard Model (SM) Higgs boson. But, the current uncertainties in the determination of the Higgs boson couplings leave room for significant deviations from the SM expectations. In fact, if one assumes no correlation between the top-quark and gluon couplings to the Higgs, the current global fit to the Higgs data lead to central values of the Higgs couplings to the bottom-quark and the top-quark that are about 2 σ away from the SM predictions. Previously, we showed that such a scenario could be realized in the Next to Minimal Supersymmetric extension of the SM (NMSSM), for heavy singlets and light MSSM-like Higgs bosons and scalar top quarks, but for couplings that ruined the perturbative consistency of the theory up to the GUT scale. In this work we show that a perturbative consistent scenario, for somewhat heavier stops, may be obtained in the presence of light singlets. An interesting bonus of this scenario is the possibility of explaining an excess of events observed in CP-even Higgs searches at LEP2.

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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)

Grant/Contract Number:: AC02-05CH11231; AC02-06CH11357; SC0009924

OSTI ID:: 1413719

Journal Information:: Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 2 Vol. 2017; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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Diphoton signal of the light Higgs boson in natural NMSSM Cao, Junjie; Guo, Xiaofei; He, Yangle Physical Review D, Vol. 95, Issue 11 https://doi.org/10.1103/physrevd.95.116001	journal	June 2017
The diphoton signal of the light Higgs boson in Natural NMSSM Cao, Junjie; Guo, Xiaofei; He, Yangle arXiv https://doi.org/10.48550/arxiv.1612.08522	text	January 2016

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