The University of Southampton
University of Southampton Institutional Repository

Sneutrino Dark Matter in the BLSSM

Sneutrino Dark Matter in the BLSSM
Sneutrino Dark Matter in the BLSSM

In the framework of the (B − L) Supersymmetric Standard Model (BLSSM), we assess the ability of ground and space based experiments to establish the nature of its prevalent Dark Matter (DM) candidate, the sneutrino, which could either be CP-even or -odd. Firstly, by benchmarking this theory construct against the results obtained by the Planck spacecraft, we extract the portions of the BLSSM parameter space compliant with relic density data. Secondly, we show that, based on current sensitivities of the Fermi Large Area Telescope (FermiLAT) and their future projections, the study of high-energy γ-ray spectra will eventually enable us to extract evidence of this DM candidate through its annihilations into W+W pairs (in turn emitting photons), in the form of both an integrated flux and a differential energy spectrum which cannot be reconciled with the assumption of DM being fermionic (like, e.g., a neutralino), although it should not be possible to distinguish between the scalar and pseudoscalar hypotheses. Thirdly, we show that, while underground direct detection experiments will have little scope in testing sneutrino DM, the Large Hadron Collider (LHC) may be able to do so in a variety of multi-lepton signatures, with and without accompanying jets (plus missing transverse energy), following data collection during Run 2 and 3.

Supergravity Models, Supersymmetric Effective Theories
1126-6708
1-21
Rose, Luigi Delle
fae9e612-f9b9-459f-9bff-2cbac09f2fb2
Khalil, Shaaban
e1007d42-6617-40bc-868b-7544f0fe0f30
King, Simon J.D.
2e855764-14d3-4bdb-b0d9-e0659b969a3b
Kulkarni, Suchita
ea123543-8041-403d-b7fa-dbec7300f190
Marzo, Carlo
e50a7231-60d0-4811-8e20-486747409cc4
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Un, Cem S.
25af457e-6050-4ff9-95fa-15a4cef053a4
Rose, Luigi Delle
fae9e612-f9b9-459f-9bff-2cbac09f2fb2
Khalil, Shaaban
e1007d42-6617-40bc-868b-7544f0fe0f30
King, Simon J.D.
2e855764-14d3-4bdb-b0d9-e0659b969a3b
Kulkarni, Suchita
ea123543-8041-403d-b7fa-dbec7300f190
Marzo, Carlo
e50a7231-60d0-4811-8e20-486747409cc4
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Un, Cem S.
25af457e-6050-4ff9-95fa-15a4cef053a4

Rose, Luigi Delle, Khalil, Shaaban, King, Simon J.D., Kulkarni, Suchita, Marzo, Carlo, Moretti, Stefano and Un, Cem S. (2018) Sneutrino Dark Matter in the BLSSM. Journal of High Energy Physics, 2018 (7), 1-21, [100]. (doi:10.1007/JHEP07(2018)100).

Record type: Article

Abstract

In the framework of the (B − L) Supersymmetric Standard Model (BLSSM), we assess the ability of ground and space based experiments to establish the nature of its prevalent Dark Matter (DM) candidate, the sneutrino, which could either be CP-even or -odd. Firstly, by benchmarking this theory construct against the results obtained by the Planck spacecraft, we extract the portions of the BLSSM parameter space compliant with relic density data. Secondly, we show that, based on current sensitivities of the Fermi Large Area Telescope (FermiLAT) and their future projections, the study of high-energy γ-ray spectra will eventually enable us to extract evidence of this DM candidate through its annihilations into W+W pairs (in turn emitting photons), in the form of both an integrated flux and a differential energy spectrum which cannot be reconciled with the assumption of DM being fermionic (like, e.g., a neutralino), although it should not be possible to distinguish between the scalar and pseudoscalar hypotheses. Thirdly, we show that, while underground direct detection experiments will have little scope in testing sneutrino DM, the Large Hadron Collider (LHC) may be able to do so in a variety of multi-lepton signatures, with and without accompanying jets (plus missing transverse energy), following data collection during Run 2 and 3.

Text
Rose2018_Article_SneutrinoDarkMatterInTheBLSSM - Accepted Manuscript
Available under License Creative Commons Attribution.
Download (727kB)

More information

e-pub ahead of print date: 16 July 2018
Published date: 2018
Keywords: Supergravity Models, Supersymmetric Effective Theories

Identifiers

Local EPrints ID: 422990
URI: http://eprints.soton.ac.uk/id/eprint/422990
ISSN: 1126-6708
PURE UUID: a2f76dd8-57fe-4ff2-97ea-207090337317

Catalogue record

Date deposited: 09 Aug 2018 16:30
Last modified: 16 Dec 2019 18:03

Export record

Altmetrics

Contributors

Author: Luigi Delle Rose
Author: Shaaban Khalil
Author: Simon J.D. King
Author: Suchita Kulkarni
Author: Carlo Marzo
Author: Stefano Moretti
Author: Cem S. Un

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×