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arXiv · 1207.1846

New limits on top squark NLSP from ATLAS 4.7 $fb^{-1}$ data

Arghya Choudhury·Amitava Datta
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Abstract

Using the ATLAS 4.7 $fb^{-1}$ data on new physics search in the jets + $\met$ channel, we obtain new limits on the lighter top squark ($\tilde t_1$) considering all its decay modes assuming that it is the next to lightest supersymmetric particle (NLSP). If the decay $\lstop$ $\ra c \lspone$ dominates and the production of dark matter relic density is due to NLSP - LSP co-annihilation then the lower limit on $\mlstop $ is 240 GeV. The limit changes to 200 GeV if the decay $\lstop$ $\ra b W \lspone$ dominates. Combining these results it follows that $\lstop $ NLSP induced baryogenesis is now constrained more tightly.

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Arghya Choudhury, Amitava Datta. 2012-10-09. New limits on top squark NLSP from ATLAS 4.7 $fb^{-1}$ data. https://doi.org/10.1142/s021773231250188x

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