Search for massive long-lived particles decaying semileptonically at sqrt(s)=13 TeV



collaboration, LHCb, Aaij, R, Abdelmotteleb, ASW, Beteta, C Abellán, Abudinén, F, Ackernley, T, Adeva, B, Adinolfi, M, Afsharnia, H, Agapopoulou, C
et al (show 1001 more authors) (2021) Search for massive long-lived particles decaying semileptonically at sqrt(s)=13 TeV. [Preprint]

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Abstract

A search is performed for massive long-lived particles (LLP) decaying semileptonically into a muon and two quarks. Two kinds of LLP production processes were considered. In the first, a Higgs-like boson with mass from 30 to 200 GeV is produced by gluon fusion and decays into two LLPs. The analysis covers LLP mass values from 10 GeV up to about one half the Higgs-like boson mass. The second LLP production mode is directly from quark interactions, with LLP masses from 10 to 90 GeV. The LLP lifetimes considered range from 5 to 200 ps. This study uses LHCb data collected from proton-proton collisions at sqrt(s)=13 TeV, corresponding to an integrated luminosity of 5.4 1/fb. No evidence of these long-lived states has been observed, and upper limits on the production cross-section times branching ratio have been set for each model considered.

Item Type: Preprint
Additional Information: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2021-028.html (LHCb public pages)
Uncontrolled Keywords: hep-ex, hep-ex
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 17 Jan 2022 09:13
Last Modified: 15 Mar 2024 01:43
DOI: 10.48550/arxiv.2110.07293
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3146844