Search for long-lived particles using calorimeter timing at the LHC

Jeong Hwa Kim, Jayashri Padmanaban, Jae Hyeok Yoo

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Long-lived particles (LLPs) are predicted in various theories beyond the Standard Model (SM). Given their non-standard nature, specialized techniques are needed for their detection. The LLPs, when produced at the LHC, travel a considerable distance before decaying into SM particles that are subsequently captured by a detector. However, when the LLPs are not boosted enough, they travel slowly and produce delayed particles. By measuring the timing of such decay products, one can test the existence of the LLPs. Calorimeter timing is an excellent tool for this, and we demonstrate that it brings improvement in sensitivity to a gauge-mediated SUSY breaking model. In particular, this work suggests that a dedicated trigger using calorimeter timing can provide a significant enhancement of sensitivity.

    Original languageEnglish
    Pages (from-to)377-381
    Number of pages5
    JournalJournal of the Korean Physical Society
    Volume80
    Issue number5
    DOIs
    Publication statusPublished - 2022 Mar

    Bibliographical note

    Funding Information:
    The authors would like to thank Matthew Citron for helpful discussions. This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (no. 2020R1C1C1005916).

    Publisher Copyright:
    © 2022, The Korean Physical Society.

    Keywords

    • Calorimeter
    • Gluino
    • LHC
    • Long-lived particles
    • Supersymmetry

    ASJC Scopus subject areas

    • General Physics and Astronomy

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