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Advisor(s)
Abstract(s)
It has been pointed out recently that current experiments still allow for a two Higgs doublet model where the hbb¯ coupling (kDmb/v) is negative; a sign opposite to that of the Standard Model. Due to the importance of delayed decoupling in the hH+H− coupling, h→γγ improved measurements will have a strong impact on this issue. For the same reason, measurements or even bounds on h→Zγ are potentially interesting. In this article, we revisit this problem, highlighting the crucial importance of h→VV, which can be understood with simple arguments. We show that the impacts on kD<0 models of both h→bb¯ and h→τ+τ− are very sensitive to input values for the gluon fusion production mechanism; in contrast, h→γγ and h→Zγ are not. We also inquire if the search for h→Zγ and its interplay with h→γγ will impact the sign of the hbb¯ coupling. Finally, we study these issues in the context of the flipped two Higgs doublet model.
Description
Keywords
Higgs Doublet Model Standard Model Atlas Detector PP Collisions 8 TEV Boson Search LHC Root -S=7 Photon
Citation
FONTES, Duarte; ROMÃO, J. C.; SILVA, João Paulo . Reappraisal of the wrong-sign HBB¯ coupling and the study of h→Zγ. Physical Review D. ISSN: 1550-7998. Vol. 90, nr. 1 (2014), Art. nr. 015021
Publisher
Amer Physical Society