Searching for NLSP sbottom at the LHC

We study the collider phenomenology of sbottom–bino co-annihilation scenario at both the 7 TeV and 14 TeV LHC. This co-annihilation scenario requires that the NLSP sbottom and LSP bino masses are apart by no more than about 20% or so, and for Mb˜1>Mb+Mχ˜10, the sbottom decays exclusively into b+χ...

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Bibliographic Details
Published inPhysics letters. B Vol. 701; no. 2; pp. 255 - 259
Main Authors Ajaib, M. Adeel, Li, Tong, Shafi, Qaisar
Format Journal Article
LanguageEnglish
Published Kidlington Elsevier B.V 04.07.2011
Elsevier
Subjects
Exact sciences and technology
LHC
NLSP sbottom
Nuclear physics
Physics
Supersymmetry
The physics of elementary particles and fields
Supersymmetry
LHC
NLSP sbottom
Luminosity
LHC collider
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Summary:We study the collider phenomenology of sbottom–bino co-annihilation scenario at both the 7 TeV and 14 TeV LHC. This co-annihilation scenario requires that the NLSP sbottom and LSP bino masses are apart by no more than about 20% or so, and for Mb˜1>Mb+Mχ˜10, the sbottom decays exclusively into b+χ˜10. We propose a search for sbottom pairs through bb¯ plus missing energy. By scanning the mass parameters Mb˜1 and Mχ˜10, we investigate the discovery limits of sbottom and bino in the Mb˜1–Mχ˜10 plane with at least 5σ significance at the LHC, for varying integrated luminosities. It is shown that with at least 5 fb−1 luminosity, the 7 TeV LHC can explore a narrow region satisfying the 20% co-annihilation condition. For the 14 TeV LHC with 10 (100) fb−1 luminosity, the discovery limit of Mb˜1 is 360 (570) GeV.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2011.05.059