Cornering Higgsinos Using Soft Displaced Tracks

Hajime Fukuda, Natsumi Nagata, Hideyuki Oide, Hidetoshi Otono, Satoshi Shirai

研究成果: ジャーナルへの寄稿記事

抜粋

Higgsino has been intensively searched for in the LHC experiments in recent years. Currently, there is an uncharted region beyond the LEP Higgsino mass limit where the mass splitting between the neutral and charged Higgsinos is around 0.3-1 GeV, which is unexplored by either the soft di-lepton or disappearing track searches. This region is, however, of great importance from a phenomenological point of view, as many supersymmetric models predict such a mass spectrum. In this Letter, we propose a possibility of filling this gap by using a soft microdisplaced track in addition to the monojet event selection, which allows us to discriminate a signature of the charged Higgsino decay from the standard model background. It is found that this new strategy is potentially sensitive to a Higgsino mass of 180(250) GeV at the LHC Run2 (HL-LHC) for a charged-neutral mass splitting of ≃0.5 GeV.

元の言語英語
記事番号101801
ジャーナルPhysical review letters
124
発行部数10
DOI
出版物ステータス出版済み - 3 13 2020

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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