Helium identification with LHCb
(2024) In Journal of Instrumentation 19(2).- 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 O(1012). These results... (More)
- 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 O(1012). These results demonstrate the feasibility of a rich programme of measurements of QCD and astrophysics interest involving light nuclei. © 2024 Institute of Physics. All rights reserved. (Less)
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https://lup.lub.lu.se/record/84873b1e-9c4c-4013-b3e3-c26fe5247563
- author
- Aaij, R. ; Ruiz-Vidal, Joan LU and Zunica, G.
- author collaboration
- organization
- publishing date
- 2024
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- dE/dx detectors, Ion identification systems, Large detector systems for particle and astroparticle physics, Particle identification methods, Astrophysics, Tellurium compounds, Astroparticle physics, De/dx detector, Detector systems, Helium nuclei, Ion identification system, Ion identifications, Large detector system for particle and astroparticle physic, Large detectors, Measurements of, Particle Identification Method, Helium
- in
- Journal of Instrumentation
- volume
- 19
- issue
- 2
- article number
- P02010
- publisher
- IOP Publishing
- external identifiers
-
- scopus:85185549843
- ISSN
- 1748-0221
- DOI
- 10.1088/1748-0221/19/02/P02010
- language
- English
- LU publication?
- yes
- id
- 84873b1e-9c4c-4013-b3e3-c26fe5247563
- date added to LUP
- 2024-03-28 15:48:40
- date last changed
- 2024-03-28 15:49:10
@article{84873b1e-9c4c-4013-b3e3-c26fe5247563,
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 O(1012). These results demonstrate the feasibility of a rich programme of measurements of QCD and astrophysics interest involving light nuclei. © 2024 Institute of Physics. All rights reserved.}},
author = {{Aaij, R. and Ruiz-Vidal, Joan and Zunica, G.}},
issn = {{1748-0221}},
keywords = {{dE/dx detectors; Ion identification systems; Large detector systems for particle and astroparticle physics; Particle identification methods; Astrophysics; Tellurium compounds; Astroparticle physics; De/dx detector; Detector systems; Helium nuclei; Ion identification system; Ion identifications; Large detector system for particle and astroparticle physic; Large detectors; Measurements of; Particle Identification Method; Helium}},
language = {{eng}},
number = {{2}},
publisher = {{IOP Publishing}},
series = {{Journal of Instrumentation}},
title = {{Helium identification with LHCb}},
url = {{http://dx.doi.org/10.1088/1748-0221/19/02/P02010}},
doi = {{10.1088/1748-0221/19/02/P02010}},
volume = {{19}},
year = {{2024}},
}