Special Article - Tools for Experiment and Theory
Constraining electroweak and strongly charged long-lived particles with CheckMATE
Department of Theoretical Physics, Tata Institute of Fundamental Research, 400005, Mumbai, India
2 Bethe Center for Theoretical Physics, Physikalisches Institut der Universität Bonn, Nußallee 12, 53115, Bonn, Germany
3 National Institute for Theoretical Physics and School of Physics, University of the Witwatersrand, Johannesburg, South Africa
4 Instituto de Física Corpuscular, IFIC-UV/CSIC, Valencia, Spain
5 Faculty of Physics, University of Warsaw, Warsaw, Poland
6 Institute for High Energy Physics, Austrian Academy of Sciences, Vienna, Austria
7 Department of Physics, National Tsing Hua University, 300, Hsinchu, Taiwan
8 Asia Pacific Center for Theoretical Physics (APCTP)-Headquarters San 31, Hyoja-dong, Nam-gu, 790-784, Pohang, South Korea
Accepted: 7 October 2021
Published online: 3 November 2021
Long-lived particles have become a new frontier in the exploration of physics beyond the Standard Model. In this paper, we present the implementation of four types of long-lived particle searches, viz. displaced leptons, disappearing track, displaced vertex with either muons or with missing transverse energy, and heavy charged tracks. These four categories cover the signatures of a large range of physics models. We illustrate their potential for exclusion and discuss their mutual overlaps in mass-lifetime space for two simple phenomenological models involving either a U(1)-charged or a coloured scalar.
© The Author(s) 2021
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