Long-lived Stops in MSSM Scenarios with a Neutralino LSP
2010 (English)In: Journal of High Energy Physics (JHEP), ISSN 1029-8479, E-ISSN 1126-6708, no 8, 005- p.Article in journal (Refereed) Published
This work investigates the possibility of a long-lived stop squark in supersymmetric models with the neutralino as the lightest supersymmetric particle (LSP). We study the implications of meta-stable stops on the sparticle mass spectra and the dark matter density. We find that in order to obtain a sufficiently long stop lifetime so as to be observable as a stable R-hadron at an LHC experiment, we need to fine tune the mass degeneracy between the stop and the LSP considerably. This increases the stop-neutralino co-anihilation cross section, leaving the neutralino relic density lower than what is expected from the WMAP results for stop masses ≲1.5 TeV/c 2. However, if such scenarios are realised in nature we demonstrate that the long-lived stops will be produced at the LHC and that stop-based R-hadrons with masses up to 1 TeV/c2 can be detected after one year of running at design luminosity
Place, publisher, year, edition, pages
2010. no 8, 005- p.
Research subject Physics
IdentifiersURN: urn:nbn:se:su:diva-47095DOI: 10.1007/JHEP08(2010)005ISI: 000282368500061OAI: oai:DiVA.org:su-47095DiVA: diva2:373008
FunderSwedish Research Council