Di-Higgs enhancement by neutral scalar as probe of new colored sector

Koji Nakamura, Kenji Nishiwaki, Kin ya Oda, Seong Chan Park, Yasuhiro Yamamoto

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We study a class of models in which the Higgs pair production is enhanced at hadron colliders by an extra neutral scalar. The scalar particle is produced by the gluon fusion via a loop of new colored particles, and decays into di-Higgs through its mixing with the Standard Model Higgs. Such a colored particle can be the top/bottom partner, such as in the dilaton model, or a colored scalar which can be triplet, sextet, octet, etc., called leptoquark, diquark, coloron, etc., respectively. We examine the experimental constraints from the latest Large Hadron Collider (LHC) data, and discuss the future prospects of the LHC and the Future Circular Collider up to 100 TeV. We also point out that the 2.4σ excess in the bb¯ γγ final state reported by the ATLAS experiment can be interpreted as the resonance of the neutral scalar at 300 GeV.

Original languageEnglish
Article number273
JournalEuropean Physical Journal C
Volume77
Issue number5
DOIs
Publication statusPublished - 2017 May 1

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Colliding beam accelerators
sectors
scalars
augmentation
probes
octets
pair production
Fusion reactions
fusion
decay
Experiments

All Science Journal Classification (ASJC) codes

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)

Cite this

Nakamura, Koji ; Nishiwaki, Kenji ; Oda, Kin ya ; Park, Seong Chan ; Yamamoto, Yasuhiro. / Di-Higgs enhancement by neutral scalar as probe of new colored sector. In: European Physical Journal C. 2017 ; Vol. 77, No. 5.
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Di-Higgs enhancement by neutral scalar as probe of new colored sector. / Nakamura, Koji; Nishiwaki, Kenji; Oda, Kin ya; Park, Seong Chan; Yamamoto, Yasuhiro.

In: European Physical Journal C, Vol. 77, No. 5, 273, 01.05.2017.

Research output: Contribution to journalArticle

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