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Superbumps

Bai, Yang·Berger, Joshua
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Abstract

For a wide range of supersymmetric models, there is a chiral superfield whose scalar and pseudo-scalar have approximately degenerate masses and couplings to Standard Model particles. At colliders, they may show up as “superbumps”: a pair of resonances with similar masses and production cross-sections. Observing the superbumps may provide evidence of supersymmetry even without seeing superpartners with a different spin. We present two models which realize the superbump scenario. The first one contains an elementary superfield, 24, under SU(5) GUT , while the second one is based on the supersymmetric QCD model with N f = N c + 1 and identifying SU(N f = 5) as SU(5) GUT . Both models have rich phenomenology including nearly mass-degenerate scalar and pseudo-scalar color octets that appear as resonances of two gluons or one gluon plus one photon. As a result, we also show that the recent 750 GeV diphoton excess at the LHC could be the first hint of a superbump signature.

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDSBeyond Standard ModelSupersymmetric Standard ModelTechnicolor and Composite Models

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Bai, Yang, Berger, Joshua. 2016-06-27. Superbumps. https://doi.org/10.1007/jhep06(2016)157

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