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.

Aaij, R., Abdelmotteleb, A.S.W., Beteta, C.A., Abudinén, F., Ackernley, T., Adams, J.A., et al. (2024). Tracking of charged particles with nanosecond lifetimes at LHCb. EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 84(7), 1-16 [10.1140/epjc/s10052-024-12993-2].

Tracking of charged particles with nanosecond lifetimes at LHCb

Carbone, A.;Ferrari, F.;Galli, D.;Patrignani, C.;Spedicato, E.;Villa, A.;
2024

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.
2024
Aaij, R., Abdelmotteleb, A.S.W., Beteta, C.A., Abudinén, F., Ackernley, T., Adams, J.A., et al. (2024). Tracking of charged particles with nanosecond lifetimes at LHCb. EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 84(7), 1-16 [10.1140/epjc/s10052-024-12993-2].
Aaij, R.; Abdelmotteleb, A. S. W.; Beteta, C. Abellan; Abudinén, F.; Ackernley, T.; Adams, J. A.; Adefisoye, A. A.; Adeva, B.; Adinolfi, M.; Adlarson,...espandi
File in questo prodotto:
File Dimensione Formato  
2024-AR-38-Tracking_of_Charg_Part_with_ns_Lifetimes-EPJC.pdf

accesso aperto

Tipo: Versione (PDF) editoriale / Version Of Record
Licenza: Licenza per Accesso Aperto. Creative Commons Attribuzione (CCBY)
Dimensione 3 MB
Formato Adobe PDF
3 MB Adobe PDF Visualizza/Apri
10052_2024_12993_MOESM1_ESM.pdf

accesso aperto

Tipo: File Supplementare
Licenza: Licenza per Accesso Aperto. Creative Commons Attribuzione (CCBY)
Dimensione 154.56 kB
Formato Adobe PDF
154.56 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1006012
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 0
social impact