2015/12/31 by P. S. Bhupal Dev, Daniele Teresi
Physics and Astronomy · #Anomaly (physics) #Atlas (anatomy) #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Large Hadron Collider #Nuclear physics #Nucleon #Observable #Particle physics #Particle physics theoretical and experimental studies #Physics #Pseudoscalar #Quantum mechanics #Quark #Resonance (particle physics) #Scalar (mathematics) #astro-ph.CO #astro-ph.SR #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.94.025001
published as Phys. Rev. D 94, 025001 (2016) · 7 pages, 4 figures. Version to appear in PRD
arxiv created 2016/06/28 · openalex publication_date 2016/07/01 · arxiv updated 2016/07/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
It has been recently pointed out that a momentum-dependent coupling of the asymmetric dark matter (ADM) with nucleons can explain the broad disagreement between helioseismological observables and the predictions of standard solar models. In this paper, we propose a minimal simplified ADM model consisting of a scalar and a pseudoscalar mediator, in addition to a Dirac fermionic DM, for generating such momentum-dependent interactions. Remarkably, the pseudoscalar with mass around 750 GeV can simultaneously explain the solar anomaly and the recent diphoton excess observed by both ATLAS and CMS experiments in the early √(s)=13 TeV LHC data. In this framework, the total width of the resonance is naturally large, as suggested by the ATLAS experiment, since the resonance mostly decays to the ADM pair. The model predicts the existence of a new light scalar in the GeV range, interacting with quarks, and observable dijet, monojet, and tt signatures for the 750 GeV resonance at the LHC.