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

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

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Alexander_2018_J._Inst._13_P06008.pdf

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Published version

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sword-2020-11-18T17:34:21.original.xml (130 B)

Original SWORD entry document

Date Issued

2018

Journal

Journal of Instrumentation

Publisher

IOP Publishing

Version

Final published version

Abstract

© 2018 CERN. Published by IOP Publishing Ltd. 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.

Terms of Use

Creative Commons Attribution 3.0 unported license

https://creativecommons.org/licenses/by/3.0/

Persistent DSpace Link

https://hdl.handle.net/1721.1/134066

DOI of Published Version

10.1088/1748-0221/13/06/P06008