Jul 26 – 30, 2010
Montpellier 2 University
Europe/Paris timezone

Effects of WIMP DM transport in the Sun

Jul 27, 2010, 11:40 AM
20m
Salle des Actes (Montpellier 2 University)

Salle des Actes

Montpellier 2 University

Place Eugene Bataillon, 34095 Montpellier Cedex 5 FRANCE

Speaker

Dr Marco Taoso (IFIC (CSIC-Universitat de Valencia))

Description

We study the effects of transport and annihilations induced by WIMP DM over the Sun, focusing in particular on the possible reduction of the solar neutrino fluxes due to the energy carried away by wimps from the innermost regions of the Sun, and to the consequent reduction of the temperature of the Solar core. We find that for standard WIMPs, even in the very low-mass range between 4 and 10 GeV, recently advocated to explain the findings of the DAMA and CoGent experiments, the effects on neutrino fluxes are below current experimental sensitivities. For models with very small, or vanishing, self-annihilation cross section, such as the so-called asymmetric DM models, the effects of transport can become large, and we study the combination of DM masses and SD cross section which can be excluded with current neutrino data. We investigate also DM models with strong self-interactions, recently invoked as a solution of the solar composition problem. We do not find however any significant modifications of the sun structure, unless the inner regions, in conflict with a previous claim.

Primary author

Dr Marco Taoso (IFIC (CSIC-Universitat de Valencia))

Co-authors

Dr Fabio Iocco (Institut d'Astrophysique de Paris, UMR 7095-CNRS, Universit\'e Pierre et Marie Curie) Prof. Georges Meynet (Geneva Observatory, University of Geneva) Dr Gianfranco Bertone (Institut d'Astrophysique de Paris and Institute f\"ur Theoretische Physik, Universit\"at Z\"urich) Dr Patrick Eggenberger (Geneva Observatory, University of Geneva)

Presentation materials