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Title: Re-opening dark matter windows compatible with a diphoton excess

Abstract

We investigate a simple setup in which an excess in the di-photon invariant mass distribution around 750 GeV, as seen by the ATLAS and CMS collaborations, is originated through a pair of collimated photon pairs. In this framework a scalar state s decays into two light pseudo-Goldstone bosons a, each of which subsequently decays into a pair of collimated photons which are misidentified as a single photon. In a minimal context of spontaneous symmetry breaking, we show that coupling a complex scalar field Φ=(s+ia)/√2 to a fermionic dark matter candidate χ, also responsible for generating its mass, allows for the correct relic density in a large region of the parameter space, while not being excluded by the direct or indirect detection experiments. Moreover, the correct relic abundance can naturally co-exist with a relatively large width for the resonant field s.

Authors:
 [1];  [1];  [2]; ;  [1]
  1. Laboratoire de Physique Théorique, CNRS, Univ. Paris-Sud,Université Paris-Saclay, 91405 Orsay (France)
  2. (France)
Publication Date:
Sponsoring Org.:
SCOAP3, CERN, Geneva (Switzerland)
OSTI Identifier:
22572111
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)005; OAI: oai:repo.scoap3.org:16298; 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; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ATLAS DETECTOR; CERN LHC; CMS DETECTOR; COSMOLOGY; FERMIONS; GEV RANGE 100-1000; GOLDSTONE BOSONS; MASS DISTRIBUTION; NONLUMINOUS MATTER; PARTICLE DECAY; PHOTONS; RADIATION DETECTION; RELICT RADIATION; SCALAR FIELDS; SYMMETRY BREAKING

Citation Formats

Arcadi, Giorgio, Ghosh, Pradipta, Centre de Physique Théorique, Ecole polytechnique, CNRS, Université Paris-Saclay, 91128 Palaiseau Cedex, Mambrini, Yann, and Pierre, Mathias. Re-opening dark matter windows compatible with a diphoton excess. United States: N. p., 2016. Web. doi:10.1088/1475-7516/2016/07/005.
Arcadi, Giorgio, Ghosh, Pradipta, Centre de Physique Théorique, Ecole polytechnique, CNRS, Université Paris-Saclay, 91128 Palaiseau Cedex, Mambrini, Yann, & Pierre, Mathias. Re-opening dark matter windows compatible with a diphoton excess. United States. doi:10.1088/1475-7516/2016/07/005.
Arcadi, Giorgio, Ghosh, Pradipta, Centre de Physique Théorique, Ecole polytechnique, CNRS, Université Paris-Saclay, 91128 Palaiseau Cedex, Mambrini, Yann, and Pierre, Mathias. Tue . "Re-opening dark matter windows compatible with a diphoton excess". United States. doi:10.1088/1475-7516/2016/07/005.
@article{osti_22572111,
title = {Re-opening dark matter windows compatible with a diphoton excess},
author = {Arcadi, Giorgio and Ghosh, Pradipta and Centre de Physique Théorique, Ecole polytechnique, CNRS, Université Paris-Saclay, 91128 Palaiseau Cedex and Mambrini, Yann and Pierre, Mathias},
abstractNote = {We investigate a simple setup in which an excess in the di-photon invariant mass distribution around 750 GeV, as seen by the ATLAS and CMS collaborations, is originated through a pair of collimated photon pairs. In this framework a scalar state s decays into two light pseudo-Goldstone bosons a, each of which subsequently decays into a pair of collimated photons which are misidentified as a single photon. In a minimal context of spontaneous symmetry breaking, we show that coupling a complex scalar field Φ=(s+ia)/√2 to a fermionic dark matter candidate χ, also responsible for generating its mass, allows for the correct relic density in a large region of the parameter space, while not being excluded by the direct or indirect detection experiments. Moreover, the correct relic abundance can naturally co-exist with a relatively large width for the resonant field s.},
doi = {10.1088/1475-7516/2016/07/005},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 07,
volume = 2016,
place = {United States},
year = {Tue Jul 05 00:00:00 EDT 2016},
month = {Tue Jul 05 00:00:00 EDT 2016}
}