TY - JOUR
T1 - Helium identification with LHCb
AU - Aaij, R.
AU - Abdelmotteleb, A. S.W.
AU - Beteta, C. Abellan
AU - Abudinén, F.
AU - Ackernley, T.
AU - Adeva, B.
AU - Adinolfi, M.
AU - Adlarson, P.
AU - Agapopoulou, C.
AU - Aidala, C. A.
AU - Ajaltouni, Z.
AU - Akar, S.
AU - Akiba, K.
AU - Albicocco, P.
AU - Albrecht, J.
AU - Alessio, F.
AU - Alexander, M.
AU - Albero, A. Alfonso
AU - Aliouche, Z.
AU - Cartelle, P. Alvarez
AU - Amalric, R.
AU - Amato, S.
AU - Amey, J. L.
AU - Amhis, Y.
AU - An, L.
AU - Anderlini, L.
AU - Andersson, M.
AU - Andreianov, A.
AU - Andreola, P.
AU - Andreotti, M.
AU - Andreou, D.
AU - Anelli, A. A.
AU - Ao, D.
AU - Archilli, F.
AU - Argenton, M.
AU - Cuendis, S. Arguedas
AU - Artamonov, A.
AU - Artuso, M.
AU - Aslanides, E.
AU - Atzeni, M.
AU - Audurier, B.
AU - Bacher, D.
AU - Perea, I. Bachiller
AU - Bachmann, S.
AU - Bachmayer, M.
AU - Back, J. J.
AU - Bailly-Reyre, A.
AU - Rodriguez, P. Baladron
AU - Balagura, V.
AU - Baldini, W.
AU - LHCb collaboration
AU - da silva Bolognani, Carolina
AU - Cámpora Pérez, Daniel Hugo
AU - de Vries, Jacco
AU - Lucio Martinez, Miriam
AU - Merk, Marcel
AU - Nicotra, Davide
AU - Onderwater, Gerco
AU - Pawley, Chris
AU - Vos, Keri
N1 - Publisher Copyright:
© 2024 Institute of Physics. All rights reserved.
PY - 2024/2/1
Y1 - 2024/2/1
N2 - 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 vs = 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.
AB - 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 vs = 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.
KW - dE/dx detectors
KW - Ion identification systems
KW - Large detector systems for particle and astroparticle physics
KW - Particle identification methods
U2 - 10.1088/1748-0221/19/02/P02010
DO - 10.1088/1748-0221/19/02/P02010
M3 - Article
SN - 1748-0221
VL - 19
JO - Journal of Instrumentation
JF - Journal of Instrumentation
IS - 2
M1 - P02010
ER -