750 GeV Diphotons and Supersymmetric Grand Unification
arXiv:1604.03598 · doi:10.1007/JHEP05(2016)182
Abstract
We investigate the 750 GeV diphoton excess in terms of supersymmetric models which preserve grand unification in the ultraviolet. We show that minimal extensions of the MSSM by a singlet and a vector-like 5-plet or 10-plet of SU(5) can explain the observed signal while remaining perturbative up to the GUT scale. Different from previous analyses we rely on light sfermions in the loops which - compared to the analog non-supersymmetric models - enhance the diphoton cross section by up to a factor of seven. While the resonance decay width is narrow, mass splitting of the scalar and pseudoscalar components may result in a double resonance. We perform a likelihood analysis on the ATLAS and CMS data to show that the significance of the diphoton excess increases from 3.3 sigma (single narrow resonance) to 3.9 sigma for the double resonance. We also provide signal predictions in other diboson channels to be tested at LHC-13.
20 pages, 6 figures
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Cited by in corpus (11)
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- The Higgs of the Higgs and the diphoton channel
- Diphoton resonance confronts dark matter
- An SU(6) GUT Origin of the TeV-Scale Vector-like Particles Associated with the 750 GeV Diphoton Resonance
- Learning from the New Higgs-like Scalar before It Vanishes
- 750 GeV Diphotons from Supersymmetry with Dirac Gauginos
- From the 750 GeV Diphoton Resonance to Multilepton Excesses
- Validity of the CMSSM interpretation of the diphoton excess
- Soft Gamma Rays from Heavy WIMPs
- Phenomenology of an model at the LHC