Tracking of charged particles with nanosecond lifetimes at LHCb

LHCb Collaboration laurent.dufour@cern.ch

doi:10.1140/epjc/s10052-024-12993-2

Tracking of charged particles with nanosecond lifetimes at LHCb

LHCb Collaboration [email protected]

CERN
National Institute for Subatomic Physics
University of Warwick
University of Zurich
University of Liverpool
Syracuse University
Instituto Galego de Física de Altas Enerxías (IGFAE)
University of Bristol
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Université Paris-Saclay
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Laboratoire Leprince-Ringuet
University of Oxford
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Heidelberg University
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Centro Brasileiro de Pesquisas Físicas
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Excellence Cluster ORIGINS
University of Bergamo
Departement de Physique Nucleaire (SPhN)
University of Basilicata
Max Planck Institute for Nuclear Physics
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Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

A method is presented to reconstruct charged particles with lifetimes between 10ps and 10ns, which considers a combination of their decay products and the partial tracks created by the initial charged particle. Using the Ξ^- baryon as a benchmark, the method is demonstrated with simulated events and proton-proton collision data at s=13TeV, corresponding to an integrated luminosity of 2.0fb^-1 collected with the LHCb detector in 2018. Significant improvements in the angular resolution and the signal purity are obtained. The method is implemented as part of the LHCb Run 3 event trigger in a set of requirements to select detached hyperons. This is the first demonstration of the applicability of this approach at the LHC, and the first to show its scaling with instantaneous luminosity.

Original language	English
Article number	761
Journal	European Physical Journal C
Volume	84
Issue number	7
DOIs	https://doi.org/10.1140/epjc/s10052-024-12993-2
State	Published - Jul 2024
Externally published	Yes

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10.1140/epjc/s10052-024-12993-2

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@article{6d301021c732451f9a58c8d305404001,

title = "Tracking of charged particles with nanosecond lifetimes at LHCb",

abstract = "A method is presented to reconstruct charged particles with lifetimes between 10ps and 10ns, which considers a combination of their decay products and the partial tracks created by the initial charged particle. Using the Ξ- baryon as a benchmark, the method is demonstrated with simulated events and proton-proton collision data at s=13TeV, corresponding to an integrated luminosity of 2.0fb-1 collected with the LHCb detector in 2018. Significant improvements in the angular resolution and the signal purity are obtained. The method is implemented as part of the LHCb Run 3 event trigger in a set of requirements to select detached hyperons. This is the first demonstration of the applicability of this approach at the LHC, and the first to show its scaling with instantaneous luminosity.",

author = "\{LHCb Collaboration [email protected]\} and R. Aaij and Abdelmotteleb, \{A. S.W.\} and Beteta, \{C. Abellan\} and F. Abudin{\'e}n and T. Ackernley and Adams, \{J. A.\} and Adefisoye, \{A. A.\} and B. Adeva and M. Adinolfi and P. Adlarson and C. Agapopoulou and Aidala, \{C. A.\} and Z. Ajaltouni and S. Akar and K. Akiba and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and Z. Aliouche and \{Alvarez Cartelle\}, P. and R. Amalric and S. Amato and Amey, \{J. L.\} and Y. Amhis and L. An and L. Anderlini and M. Andersson and A. Andreianov and P. Andreola and M. Andreotti and D. Andreou and A. Anelli and D. Ao and F. Archilli and M. Argenton and \{Arguedas Cuendis\}, S. and A. Artamonov and M. Artuso and E. Aslanides and M. Atzeni and B. Audurier and D. Bacher and \{Bachiller Perea\}, I. and S. Bachmann and M. Bachmayer and Back, \{J. J.\} and \{Baladron Rodriguez\}, P. and \{Calderon Ramirez\}, S. and \{Castro Godinez\}, J.",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2024.",

year = "2024",

month = jul,

doi = "10.1140/epjc/s10052-024-12993-2",

language = "Ingl{\'e}s",

volume = "84",

journal = "European Physical Journal C",

issn = "1434-6044",

number = "7",

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TY - JOUR

T1 - Tracking of charged particles with nanosecond lifetimes at LHCb

AU - LHCb Collaboration [email protected]

AU - Aaij, R.

AU - Abdelmotteleb, A. S.W.

AU - Beteta, C. Abellan

AU - Abudinén, F.

AU - Ackernley, T.

AU - Adams, J. A.

AU - Adefisoye, A. A.

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 - Aliouche, Z.

AU - Alvarez Cartelle, P.

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.

AU - Ao, D.

AU - Archilli, F.

AU - Argenton, M.

AU - Arguedas Cuendis, S.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bacher, D.

AU - Bachiller Perea, I.

AU - Bachmann, S.

AU - Bachmayer, M.

AU - Back, J. J.

AU - Baladron Rodriguez, P.

AU - Calderon Ramirez, S.

AU - Castro Godinez, J.

PY - 2024/7

Y1 - 2024/7

N2 - A method is presented to reconstruct charged particles with lifetimes between 10ps and 10ns, which considers a combination of their decay products and the partial tracks created by the initial charged particle. Using the Ξ- baryon as a benchmark, the method is demonstrated with simulated events and proton-proton collision data at s=13TeV, corresponding to an integrated luminosity of 2.0fb-1 collected with the LHCb detector in 2018. Significant improvements in the angular resolution and the signal purity are obtained. The method is implemented as part of the LHCb Run 3 event trigger in a set of requirements to select detached hyperons. This is the first demonstration of the applicability of this approach at the LHC, and the first to show its scaling with instantaneous luminosity.

AB - A method is presented to reconstruct charged particles with lifetimes between 10ps and 10ns, which considers a combination of their decay products and the partial tracks created by the initial charged particle. Using the Ξ- baryon as a benchmark, the method is demonstrated with simulated events and proton-proton collision data at s=13TeV, corresponding to an integrated luminosity of 2.0fb-1 collected with the LHCb detector in 2018. Significant improvements in the angular resolution and the signal purity are obtained. The method is implemented as part of the LHCb Run 3 event trigger in a set of requirements to select detached hyperons. This is the first demonstration of the applicability of this approach at the LHC, and the first to show its scaling with instantaneous luminosity.

UR - https://www.scopus.com/pages/publications/85200335358

U2 - 10.1140/epjc/s10052-024-12993-2

DO - 10.1140/epjc/s10052-024-12993-2

M3 - Artículo

AN - SCOPUS:85200335358

SN - 1434-6044

VL - 84

JO - European Physical Journal C

JF - European Physical Journal C

IS - 7

M1 - 761

ER -

Tracking of charged particles with nanosecond lifetimes at LHCb

Abstract

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