Flavor anomalies, the 750 GeV diphoton excess, and a dark matter candidate
We argue that the diphoton excess recently reported by ATLAS and CMS can be explained, along with several anomalies seen in the flavor sector, in models where a Standard Model singlet scalar resonance with mass MS≈750 GeV is produced in gluon fusion via loops containing a scalar color-triplet leptoq...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
22 June 2016
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| In: |
Physical review
Year: 2016, Volume: 93, Issue: 11, Pages: 115030 |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.93.115030 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevD.93.115030 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.93.115030 
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| Author Notes: | Martin Bauer and Matthias Neubert |
| Summary: | We argue that the diphoton excess recently reported by ATLAS and CMS can be explained, along with several anomalies seen in the flavor sector, in models where a Standard Model singlet scalar resonance with mass MS≈750 GeV is produced in gluon fusion via loops containing a scalar color-triplet leptoquark ϕ. For a leptoquark mass Mϕ≲1 TeV, the production cross section is naturally in the 10 fb range. A large S→γγ branching ratio can be obtained by coupling the scalar S to new color-singlet fermions χ with electroweak scale masses, which can be part of an SU(2)L multiplet, whose neutral component has the right mass and quantum numbers to be a dark matter candidate. Our model reveals a connection between flavor anomalies, the nature of dark matter and a new scalar, which acts as a mediator to the dark sector. The loop-mediated decay S→τ+τ− could be a striking signature of this model. |
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| Physical Description: | Online Resource |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.93.115030 |