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Tracking of charged particles with nanosecond lifetimes at LHCb.

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Title: Tracking of charged particles with nanosecond lifetimes at LHCb.
Authors: Aaij, R.1 (AUTHOR), Abdelmotteleb, A. S. W.2 (AUTHOR), Beteta, C. Abellan3 (AUTHOR), Abudinén, F.2 (AUTHOR), Ackernley, T.4 (AUTHOR), Adams, J. A.5 (AUTHOR), Adefisoye, A. A.5 (AUTHOR), Adeva, B.6 (AUTHOR), Adinolfi, M.7 (AUTHOR), Adlarson, P.8 (AUTHOR), Agapopoulou, C.9 (AUTHOR), Aidala, C. A.10 (AUTHOR), Ajaltouni, Z.11 (AUTHOR), Akar, S.12 (AUTHOR), Akiba, K.1 (AUTHOR), Albicocco, P.13 (AUTHOR), Albrecht, J.14 (AUTHOR), Alessio, F.15 (AUTHOR), Alexander, M.16 (AUTHOR), Aliouche, Z.17 (AUTHOR)
Source: European Physical Journal C -- Particles & Fields. Jul2024, Vol. 84 Issue 7, p1-16. 16p.
Abstract: A method is presented to reconstruct charged particles with lifetimes between 10 ps and 10 ns , 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 = 13 TeV , corresponding to an integrated luminosity of 2.0 fb - 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. [ABSTRACT FROM AUTHOR]
Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Tracking of charged particles with nanosecond lifetimes at LHCb.
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  Data: <searchLink fieldCode="JN" term="%22European+Physical+Journal+C+--+Particles+%26+Fields%22">European Physical Journal C -- Particles & Fields</searchLink>. Jul2024, Vol. 84 Issue 7, p1-16. 16p.
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  Data: A method is presented to reconstruct charged particles with lifetimes between 10 ps and 10 ns , 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 = 13 TeV , corresponding to an integrated luminosity of 2.0 fb - 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. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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