Long-Lived Unstable Superparticles at the LHC

Koji Ishiwata; Takumi Ito; Takeo Moroi

doi:10.1016/j.physletb.2008.09.024

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arXiv · 0807.0975

Long-Lived Unstable Superparticles at the LHC

Koji Ishiwata·Takumi Ito·Takeo Moroi

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Abstract

In various models of supersymmetry (SUSY), the lightest superparticle in the minimal SUSY standard model sector, which we call MSSM-LSP, becomes unstable. Then, we may observe the decay of the MSSM-LSP in the detector at the LHC experiment. We show that the discovery of such a decay process (and the determination of the lifetime of the MSSM-LSP) may be possible at the LHC even if the decay length of the MSSM-LSP is much longer than the size of the detector; sizable number of the MSSM-LSPs decay inside the detector if the lifetime is shorter than 0.01-1 millisec. We also discuss the implications of the study of the MSSM-LSP decay for several well-motivated SUSY models.

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Koji Ishiwata, Takumi Ito, Takeo Moroi. 2008-07-07. Long-Lived Unstable Superparticles at the LHC. https://doi.org/10.1016/j.physletb.2008.09.024

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