Author(s): Fontes, Duarte ; Romão, J. C. ; Silva, João Paulo
Date: 2014
Persistent ID: http://hdl.handle.net/10400.21/4988
Origin: Repositório Científico do Instituto Politécnico de Lisboa
Subject(s): Higgs Doublet Model; Standard Model; Atlas Detector; PP Collisions; 8 TEV; Boson; Search; LHC; Root -S=7; Photon
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.
