Di-photon excess at LHC and the gamma ray excess at the Galactic Centre

Journal Article · Mon Jul 25 00:00:00 EDT 2016 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2016/07/042· OSTI ID:22572123

Hektor, Andi ^[1]; Marzola, Luca ^[1]

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1. National Institute of Chemical Physics and Biophysics,Rävala pst. 10, 10143 Tallinn (Estonia)

Motivated by the recent indications for a 750 GeV resonance in the di-photon final state at the LHC, in this work we analyse the compatibility of the excess with the broad photon excess detected at the Galactic Centre. Intriguingly, by analysing the parameter space of an effective models where a 750 GeV pseudoscalar particles mediates the interaction between the Standard Model and a scalar dark sector, we prove the compatibility of the two signals. We show, however, that the LHC mono-jet searches and the Fermi LAT measurements strongly limit the viable parameter space. We comment on the possible impact of cosmic antiproton flux measurement by the AMS-02 experiment.

• Sponsoring Organization: SCOAP3, CERN, Geneva (Switzerland)
• OSTI ID: 22572123
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2016, Issue 07; Other Information: PUBLISHER-ID: JCAP07(2016)042; OAI: oai:repo.scoap3.org:16560; cc-by Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
CERN LHC
COSMIC PHOTONS
GEV RANGE 100-1000
INTERNATIONAL SPACE STATION
JET MODEL
MAGNETIC SPECTROMETERS
MILKY WAY
NONLUMINOUS MATTER
PSEUDOSCALAR MESONS
RESONANCE PARTICLES
STANDARD MODEL