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Astrophysical limits on light NMSSM neutralinos

Albornoz Vásquez, Daniel; Bélanger, Geneviève; Boehm, Céline

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Authors

Daniel Albornoz Vásquez

Geneviève Bélanger

Céline Boehm



Abstract

It was recently shown that light LSP neutralinos could be found in the framework of the Next-to-Minimal Supersymmetric Standard Model (NMSSM). These candidates would escape known particle physics constraints even though they are relatively light. We now investigate the astrophysical limits which can be set on these particles. We show, in particular, that the Fermi observation of dwarf spheroidal galaxies enable to constrain the parameter space associated with these candidates. Combined with the XENON100 experimental limits, our results illustrate the complementarity between direct and indirect searches for dark matter. Yet, our findings also suggest that probing light neutralinos in the Next-to-Minimal Supersymmetric Standard Model (NMSSM) scenario will be very difficult because the sensitivity of both dark matter direct and indirect detection experiments would have to be improved by at least six orders of magnitude compared to present values in order to explore the entire parameter space. Finally, we show that the parameter space compatible with the CoGeNT signal (albeit disfavored by the XENON100 limit) is not excluded by gamma nor radio observations.

Citation

Albornoz Vásquez, D., Bélanger, G., & Boehm, C. (2011). Astrophysical limits on light NMSSM neutralinos. Physical Review D, Particles and fields, 84(9), Article 095008. https://doi.org/10.1103/physrevd.84.095008

Journal Article Type Article
Publication Date Nov 1, 2011
Deposit Date Feb 3, 2012
Publicly Available Date Mar 28, 2024
Journal Physical Review D, Particles and fields
Print ISSN 0556-2821
Electronic ISSN 1089-4918
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 84
Issue 9
Article Number 095008
DOI https://doi.org/10.1103/physrevd.84.095008

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Copyright Statement
© 2011 American Physical Society





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