One jet to rule them all: monojet constraints and invisible decays of a 750 GeV diphoton resonance

Abstract : The ATLAS and CMS collaborations have recently reported a mild excess in the diphoton final state pointing to a resonance with a mass of around 750 GeV and a potentially large width. In this work, we consider the possibility of such a scalar resonance being produced via the gluon fusion process and decaying to jets, diphotons and a pair of invisible particles, stable at collider scales. We obtain limits from monojet searches on such a resonance and test its compatibility with the requirement for a large width. We also consider the possibility that this stable, neutral particle is a potential dark matter candidate and investigate the relic density constraints along with the collider limits within such a model. We conclude that monojet searches provide strong constraints in ruling out a large part of the considered parameter space.
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http://hal.in2p3.fr/in2p3-01247895
Contributor : Emmanuelle Vernay <>
Submitted on : Wednesday, December 23, 2015 - 8:20:11 AM
Last modification on : Tuesday, May 22, 2018 - 9:48:10 PM

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D. Barducci, A. Goudelis, S. Kulkarni, D. Sengupta. One jet to rule them all: monojet constraints and invisible decays of a 750 GeV diphoton resonance. Journal of High Energy Physics, Springer Verlag (Germany), 2016, 2016 (5), pp.154. ⟨10.1007/JHEP05(2016)154⟩. ⟨in2p3-01247895⟩

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