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Helium identification with LHCb
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LHCb Collaboration (Including:
). (2024) Helium identification with LHCb. Journal of Instrumentation, 19 . P02010. doi:10.1088/1748-0221/19/02/P02010 ISSN 1748-0221.
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Aaij_2024_J._Inst._19_P02010.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (2338Kb) | Preview |
Official URL: https://doi.org/10.1088/1748-0221/19/02/P02010
Abstract
The identification of helium nuclei at LHCb is achieved using a method based on measurements of ionisation losses in the silicon sensors and timing measurements in the Outer Tracker drift tubes. The background from photon conversions is reduced using the RICH detectors and an isolation requirement. The method is developed using pp collision data at √(s) = 13 TeV recorded by the LHCb experiment in the years 2016 to 2018, corresponding to an integrated luminosity of 5.5 fb-1. A total of around 105 helium and antihelium candidates are identified with negligible background contamination. The helium identification efficiency is estimated to be approximately 50% with a corresponding background rejection rate of up to Script O(1012). These results demonstrate the feasibility of a rich programme of measurements of QCD and astrophysics interest involving light nuclei.
Item Type: | Journal Article | ||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
Journal or Publication Title: | Journal of Instrumentation | ||||||
Publisher: | IOP Publishing Ltd | ||||||
ISSN: | 1748-0221 | ||||||
Official Date: | 5 February 2024 | ||||||
Dates: |
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Volume: | 19 | ||||||
Article Number: | P02010 | ||||||
DOI: | 10.1088/1748-0221/19/02/P02010 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||
Date of first compliant deposit: | 2 April 2024 | ||||||
Date of first compliant Open Access: | 2 April 2024 |
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