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Title: Generalised form factor dark matter in the Sun

We study the effects of energy transport in the Sun by asymmetric dark matter with momentum and velocity-dependent interactions, with an eye to solving the decade-old Solar Abundance Problem. We study effective theories where the dark matter-nucleon scattering cross-section goes as v{sub rel}{sup 2n} and q{sup 2n} with n=−1,0,1 or 2, where v{sub rel} is the dark matter-nucleon relative velocity and q is the momentum exchanged in the collision. Such cross-sections can arise generically as leading terms from the most basic nonstandard DM-quark operators. We employ a high-precision solar simulation code to study the impact on solar neutrino rates, the sound speed profile, convective zone depth, surface helium abundance and small frequency separations. We find that the majority of models that improve agreement with the observed sound speed profile and depth of the convection zone also reduce neutrino fluxes beyond the level that can be reasonably accommodated by measurement and theory errors. However, a few specific points in parameter space yield a significant overall improvement. A 3–5 GeV DM particle with σ{sub SI}∝q{sup 2} is particularly appealing, yielding more than a 6σ improvement with respect to standard solar models, while being allowed by direct detection and collider limits. We providemore » full analytical capture expressions for q- and v{sub rel}-dependent scattering, as well as complete likelihood tables for all models.« less
Authors:
 [1] ;  [2] ;  [3]
  1. Institute for Particle Physics Phenomenology (IPPP), Department of Physics,Durham University, Durham DH1 3LE (United Kingdom)
  2. Institut de Ciències de l’Espai (ICE-CSIC/IEEC), Campus UAB,Carrer de Can Magrans s/n, 08193 Cerdanyola del Vallès (Spain)
  3. Department of Physics, Imperial College London, Blackett Laboratory,Prince Consort Road, London SW7 2AZ (United Kingdom)
Publication Date:
OSTI Identifier:
22458365
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2015; Journal Issue: 08; Other Information: PUBLISHER-ID: JCAP08(2015)040; OAI: oai:repo.scoap3.org:11436; 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)
Sponsoring Org:
SCOAP3, CERN, Geneva (Switzerland)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ABUNDANCE; ACCURACY; COLLISIONS; COMPUTERIZED SIMULATION; CROSS SECTIONS; DETECTION; ENERGY TRANSFER; FORM FACTORS; GEV RANGE; HELIUM; NONLUMINOUS MATTER; NUCLEONS; QUARKS; SCATTERING; SOLAR NEUTRINOS; SOUND WAVES; STAR MODELS; SUN; VELOCITY