D.G. Cerdeño
Very light right-handed sneutrino dark matter in the NMSSM
Cerdeño, D.G.; Huh, J.H.; Peiró, M.; Seto, O.
Authors
J.H. Huh
M. Peiró
O. Seto
Abstract
Very light right-handed (RH) sneutrinos in the Next-to-Minimal Supersymmetric Standard Model can be viable candidates for cold dark matter. We investigate the prospects for their direct detection, addressing their compatibility with the recent signal observed by the CoGeNT detector, and study the implications for Higgs phenomenology. We find that in order to reproduce the correct relic abundance very light RH sneutrinos can annihilate into either a fermion-antifermion pair, very light pseudoscalar Higgses or RH neutrinos. If the main annihilation channel is into fermions, we point out that RH sneutrinos could naturally account for the CoGeNT signal. Furthermore, the lightest Higgs has a very large invisible decay width, and in some cases the second-lightest Higgs too. On the other hand, if the RH sneutrino annihilates mostly into pseudoscalars or RH neutrinos the predictions for direct detection are below the current experimental sensitivities and satisfy the constraints set by CDMS and XENON. We also calculate the gamma ray flux from RH sneutrino annihilation in the Galactic centre, including as an interesting new possibility RH neutrinos in the final state. These are produced through a resonance with the Higgs and the resulting flux can exhibit a significant Breit-Wigner enhancement.
Citation
Cerdeño, D., Huh, J., Peiró, M., & Seto, O. (2011). Very light right-handed sneutrino dark matter in the NMSSM. Journal of Cosmology and Astroparticle Physics, 2011(11), Article 027. https://doi.org/10.1088/1475-7516/2011/11/027
Journal Article Type | Article |
---|---|
Acceptance Date | Oct 27, 2011 |
Online Publication Date | Nov 14, 2011 |
Publication Date | Nov 14, 2011 |
Deposit Date | Dec 2, 2016 |
Publicly Available Date | Mar 29, 2024 |
Journal | Journal of Cosmology and Astroparticle Physics |
Publisher | IOP Publishing |
Peer Reviewed | Peer Reviewed |
Volume | 2011 |
Issue | 11 |
Article Number | 027 |
DOI | https://doi.org/10.1088/1475-7516/2011/11/027 |
Related Public URLs | https://arxiv.org/abs/1108.0978 |
Files
Accepted Journal Article
(2.4 Mb)
PDF
Copyright Statement
This is an author-created, un-copyedited version of an article published in Journal of cosmology and astroparticle physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at 10.1088/1475-7516/2011/11/027
You might also like
A direct detection view of the neutrino NSI landscape
(2023)
Journal Article
The dark matter component of the Gaia radially anisotropic substructure
(2020)
Journal Article
Constraints on dark photons and axionlike particles from the SuperCDMS Soudan experiment
(2020)
Journal Article
On the correlation between the local dark matter and stellar velocities
(2019)
Journal Article
B anomalies and dark matter: a complex connection
(2019)
Journal Article
Downloadable Citations
About Durham Research Online (DRO)
Administrator e-mail: dro.admin@durham.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2024
Advanced Search