The 750 GeV diphoton excess and SUSY

Heinemeyer, S.

doi:10.1142/s0217751x16300234

Int. J. Mod. Phys. A

2016

DOI: 10.1142/s0217751x16300234

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The 750 GeV diphoton excess and SUSY

S. Heinemeyer¹

Abstract: The LHC experiments ATLAS and CMS have reported an excess in the diphoton spectrum at \sim 750 GeV. At the same time the motivation for Supersymmetry (SUSY) remains unbowed. Consequently, we review briefly the proposals to explain this excess in SUSY, focusing on "pure" (N)MSSM solutions. We then review in more detail a proposal to realize this excess within the NMSSM. In this particular scenario a Higgs boson with mass around 750 GeV decays to two light pseudo-scalar Higgs bosons. Via mixing with the pion the… Show more

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Interpreting 750 GeV diphoton excess with R-parity violating supersymmetry

Ding

Huang

et al. 2017

Int. J. Mod. Phys. A

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We propose an supersymmetric explanation of the diphoton excess in the Minimal Supersymmetric Standard Model with the leptonic R-parity violation. Where the sneutrino serves as the 750 GeV resonance and produced through quark anti-quark annihilation. With introducing appropriate trilinear soft parameters, we show that the diphoton branching ratio is significantly enhanced compared with the conventional MSSM. The parameter space favored by diphoton excess strongly indicates the mass of smuon and stau fall into the range 375 − 410 (375-480) GeV, which depending on the electroweakino masses. In addition, the R-parity-violating trilinear couplings involved with second generation quarks are both favored by compatibility of diphoton excess and low-energy constraints.

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Interpreting 750 GeV diphoton excess with R-parity violating supersymmetry

Ding

Huang

et al. 2017

Int. J. Mod. Phys. A

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Implications of diphoton searches for a radion in the bulk-Higgs scenario

Cox

Medina

Ray

et al. 2017

Int. J. Mod. Phys. A

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In this work we point out that the apparent diphoton excess initially presented by the ATLAS and CMS collaborations could have originated from a radion in the bulk Higgs scenario within a warped extra dimension. In this scenario the couplings of the radion to massive gauge bosons are suppressed, allowing it to evade existing searches. In the presence of mixing with the Higgs, due to the strong constraints from diboson searches, only points near what we denominate the alignment region were able to explain the diphoton signal and evade other experimental constraints. In light of the new measurements presented at ICHEP 2016 by both LHC collaborations, which do not confirm the initial diphoton excess, we study the current and future collider constraints on a radion within the bulk-Higgs scenario. We find that searches in the diphoton channel provide the most powerful probe of this scenario and already exclude large regions of parameter space, particularly for smaller warp factors. The radion has a sizeable branching ratio into top pairs and this channel may also give competitive constraints in the future. Finally, diHiggs searches can provide a complementary probe in the case of non-zero radion-Higgs mixing but strong alignment.

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The 750 GeV diphoton excess and SUSY

Cited by 2 publications

References 33 publications

Interpreting 750 GeV diphoton excess with R-parity violating supersymmetry

Interpreting 750 GeV diphoton excess with R-parity violating supersymmetry

Implications of diphoton searches for a radion in the bulk-Higgs scenario

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