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Scientific article
Open access
English

The 750 GeV diphoton excess, dark matter and constraints from the IceCube experiment

Published inThe journal of high energy physics, vol. 1607, p. 141-164
Collection
  • Open Access - SCOAP3
Publication date2016
Abstract

Recent LHC data show hints of a new resonance in the diphoton distribution at an invariant mass of 750 GeV. Interestingly, this new particle might be both CP odd and play the role of a portal into the dark matter sector. Under these assumptions and motivated by the fact that the requirement of SU(2) L invariance automatically implies the coupling of this alleged new resonance to ZZ and Z γ, we investigate the current and future constraints coming from the indirect searches performed through the neutrino telescope IceCube, supplementing them with direct detection experiments and γ-ray observations. We show that IceCube constraints can be stronger than the ones from direct detection experiments if the dark matter mass is larger than a few hundred GeV. Furthermore, in the scenario in which the dark matter is a scalar particle, the IceCube data limit the cross section between the DM and the proton to values close to the predicted ones for natural values of the parameters.

Keywords
  • Beyond Standard Model
  • Cosmology of Theories beyond the SM
Citation (ISO format)
MORGANTE, Enrico et al. The 750 GeV diphoton excess, dark matter and constraints from the IceCube experiment. In: The journal of high energy physics, 2016, vol. 1607, p. 141–164. doi: 10.1007/JHEP07(2016)141
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Article (Published version)
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ISSN of the journal1029-8479
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