Revisiting scalar quark hidden sector in light of 750-GeV diphoton resonance

  • Cheng-Wei ChiangEmail author
  • Masahiro Ibe
  • Tsutomu T. Yanagida
Open Access
Regular Article - Theoretical Physics


We revisit the model of a CP -even singlet scalar resonance proposed in arXiv:1507.02483, where the resonance appears as the lightest composite state made of scalar quarks participating in hidden strong dynamics. We show that the model can consistently explain the excess of diphoton events with an invariant mass around 750 GeV reported by both the ATLAS and CMS experiments. We also discuss the nature of the charged composite states in the TeV range which accompany to the neutral scalar. Due to inseparability of the dynamical scale and the mass of the resonance, the model also predicts signatures associated with the hidden dynamics such as leptons, jets along with multiple photons at future collider experiments. We also associate the TeV-scale dynamics behind the resonance with an explanation of dark matter.


Beyond Standard Model Technicolor and Composite Models GUT 


Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.


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© The Author(s) 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits use, duplication, adaptation, distribution, and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  • Cheng-Wei Chiang
    • 1
    • 2
    • 3
    Email author
  • Masahiro Ibe
    • 4
    • 5
  • Tsutomu T. Yanagida
    • 4
  1. 1.Center for Mathematics and Theoretical Physics and Department of PhysicsNational Central UniversityTaoyuanRepublic of China
  2. 2.Institute of Physics, Academia SinicaTaipeiRepublic of China
  3. 3.Physics Division, National Center for Theoretical SciencesHsinchuRepublic of China
  4. 4.Kavli IPMU (WPI), UTIASUniversity of TokyoKashiwaJapan
  5. 5.ICRR, University of TokyoKashiwaJapan

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