Mapping the material in the LHCb vertex locator using secondary hadronic interactions



Alexander, M, Barter, W, Bay, A, Bel, LJ, van Beuzekom, M, Bogdanova, G, Borghi, S, Bowcock, TJV ORCID: 0000-0002-3505-6915, Buchanan, E, Buytaert, J
et al (show 57 more authors) (2018) Mapping the material in the LHCb vertex locator using secondary hadronic interactions. JOURNAL OF INSTRUMENTATION, 13 (06). P06008-.

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Abstract

Precise knowledge of the location of the material in the LHCb vertex locator (VELO) is essential to reducing background in searches for long-lived exotic particles, and in identifying jets that originate from beauty and charm quarks. Secondary interactions of hadrons produced in beam-gas collisions are used to map the location of material in the VELO. Using this material map, along with properties of a reconstructed secondary vertex and its constituent tracks, a $p$-value can be assigned to the hypothesis that the secondary vertex originates from a material interaction. A validation of this procedure is presented using photon conversions to dimuons.

Item Type: Article
Additional Information: All figures and tables are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-DP-2018-002.html
Uncontrolled Keywords: Particle tracking detectors, Performance of High Energy Physics Detectors
Depositing User: Symplectic Admin
Date Deposited: 30 Aug 2018 06:19
Last Modified: 19 Jan 2023 01:25
DOI: 10.1088/1748-0221/13/06/P06008
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3025691