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Kobakhidze, Archil; Wang, Fei; Wu, Lei; Yang, Jin Min; Zhang, Mengchao, E-mail: archil.kobakhidze@sydney.edu.au, E-mail: feiwang@zzu.edu.cn, E-mail: wuleihep@gmail.com, E-mail: jmyang@itp.ac.cn, E-mail: mczhang@itp.ac.cn
arXiv e-print [ PDF ]2016
arXiv e-print [ PDF ]2016
AbstractAbstract
[en] The top and bottom seesaw model, which extends the top seesaw in order to accommodate a 125 GeV Higgs boson, predicts vector-like top/bottom partners and these partners can be bounded to form several neutral and charged singlet composite scalars by some new strong dynamics. In this letter, we use such a singlet scalar to interpret the 750 GeV diphoton resonance. This singlet scalar is dominantly produced through the gluon fusion process induced by the partners and its diphoton decay is induced by both the partners and the charged singlet scalars. We show that this scenario can readily account for the observed 750 GeV diphoton signal under the current LHC constraints. Further, this scenario predicts some other phenomenology, such as a strong correlation between the decays to γγ, Zγ and ZZ, a three-photon signal from the associate production of a singlet scalar and a photon, as well as some signals from the partner cascade decays. These signals may jointly allow for a test of this framework in future 100 TeV hadron collider and ILC experiments.
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S0370-2693(16)30038-7; Available from http://dx.doi.org/10.1016/j.physletb.2016.03.067; Copyright (c) 2016 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
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