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

Abstract

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.

Authors:
 [1];  [1];  [2]
  1. National Institute of Chemical Physics and Biophysics,Rävala pst. 10, 10143 Tallinn (Estonia)
  2. (Estonia)
Publication Date:
Sponsoring Org.:
SCOAP3, CERN, Geneva (Switzerland)
OSTI Identifier:
22572123
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2016; Journal 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)
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Hektor, Andi, Marzola, Luca, and Institute of Physics, University of Tartu,Ravila 14c, 50411 Tartu. Di-photon excess at LHC and the gamma ray excess at the Galactic Centre. United States: N. p., 2016. Web. doi:10.1088/1475-7516/2016/07/042.
Hektor, Andi, Marzola, Luca, & Institute of Physics, University of Tartu,Ravila 14c, 50411 Tartu. Di-photon excess at LHC and the gamma ray excess at the Galactic Centre. United States. doi:10.1088/1475-7516/2016/07/042.
Hektor, Andi, Marzola, Luca, and Institute of Physics, University of Tartu,Ravila 14c, 50411 Tartu. Mon . "Di-photon excess at LHC and the gamma ray excess at the Galactic Centre". United States. doi:10.1088/1475-7516/2016/07/042.
@article{osti_22572123,
title = {Di-photon excess at LHC and the gamma ray excess at the Galactic Centre},
author = {Hektor, Andi and Marzola, Luca and Institute of Physics, University of Tartu,Ravila 14c, 50411 Tartu},
abstractNote = {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.},
doi = {10.1088/1475-7516/2016/07/042},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 07,
volume = 2016,
place = {United States},
year = {Mon Jul 25 00:00:00 EDT 2016},
month = {Mon Jul 25 00:00:00 EDT 2016}
}