Probing Bino-Wino coannihilation at the LHC

Natsumi Nagata, Hidetoshi Otono, Satoshi Shirai

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Abstract: We study bino-wino coannihilation scenario in the so-called spread or mini-split supersymmetry. We show that, in this model, a neutral wino has a macroscopic decay length in a wide range of parameter space. This characteristic feature could be observed as a displaced vertex plus missing transverse energy event at the LHC. In this paper, we study the current constraints and future prospects on the scenario based on the displaced vertex search performed by the ATLAS collaboration. It is found that a sizable parameter region can be probed at the 8 TeV LHC run. This search strategy will considerably extend its reach at the next stage of the LHC running, and thus play a crucial role to examine a possibility of bino dark matter in the mini-split type supersymmetric models.

Original languageEnglish
Article number86
JournalJournal of High Energy Physics
Volume2015
Issue number10
DOIs
Publication statusPublished - Oct 1 2015

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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