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Stealth supersymmetry
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DOI：10.1007/JHEP11(2011)012.png)
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摘要
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We present a broad class of supersymmetric models that preserve R-parity but lack missing energy signatures. These models are significantly less constrained than traditional supersymmetry by emerging LHC limits that rely on missing energy signatures, and therefore require less tuning to accommodate experimental results. They have new light particles with weak-scale supersymmetric masses that feel SUSY breaking only through couplings to the MSSM. This small SUSY breaking leads to nearly degenerate fermion/boson pairs with small mass splittings, and hence small phase space for decays carrying away invisible energy. The simplest scenario has low-scale SUSY breaking, with missing energy only from soft gravitinos. This scenario is natural, lacks artificial tunings to produce a squeezed spectrum, and is consistent with gauge coupling unification. The resulting collider signals will be jet-rich events containing false resonances that could resemble signatures of R-parity violation. We discuss concrete examples of the general idea, and emphasize gamma jj resonances, displaced vertices, and very large numbers of b-jets as possible discovery modes.
Keyword:
Supersymmetry Phenomenology
期刊
IF:
5.5
论文数:
3.9W
被引数:
13.7W
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