Reconstruction and identification of pairs of collimated τ-leptons decaying hadronically using √s=13 TeV pp collision data with the ATLAS detector
- NázevTitle
- Reconstruction and identification of pairs of collimated τ-leptons decaying hadronically using √s=13 TeV pp collision data with the ATLAS detectorReconstruction and identification of pairs of collimated τ-leptons decaying hadronically using √s=13 TeV pp collision data with the ATLAS detector
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- G. Aad, E. Aakvaag, B. Abbott, S. Abdelhameed, B. Ali, K. Augsten, B. Bergmann, H. Day-Hall, P. Fiedler, Z. Hubáček, S. Mondal, M. Myška, L. Novotný, V. Petousis, S. Pospíšil, K. Smolek, A. Sopczak, V. Vacek, P. Vokáč, O. Zaplatílek
- Klíčová slovaKeywords
- lhc, accelerator, particle identification
- ExperimentCollaboration
- ATLAS
- DOIDOI
- 10.1140/epjc/s10052-025-14075-3
- Časopis / citaceJournal / citation
- The European Physical Journal C 85(5), 561 (2025) · ISSN 1434-6052
- RokYear
- 2025
- JazykLanguage
- eng
- ZáznamyRecords
- ProjektProject
- Tvarování ultrakrátkých elektronových shluků pro potřeby budoucích urychlovačůUltrashort electron bunch shaping for future accelerators; Institucionální podpora na rozvoj výzkumné org.Institucionální podpora na rozvoj výzkumné org.; CERN-CZ III - Výzkumná infrastruktura pro experimenty v CERN - LM2023040 (2023–2026)CERN-CZ III - Výzkumná infrastruktura pro experimenty v CERN - LM2023040 (2023–2026); Výzkum základních stavebních kamenů hmoty s využitím špičkových technologiíFundamental constituents of matter through frontier technologies
- CitovánoCited by
- 4 (INSPIRE-HEP)
- Plný text (open access)Full text (open access)
- https://link.springer.com/content/pdf/10.1140/epjc/s10052-025-14075-3.pdf
- Citace ke staženíDownload citation
- TXT · BibTeX
AbstraktAbstract
This paper describes an algorithm for reconstructing and identifying a highly collimated hadronically decaying tau-lepton pair with low transverse momentum. When two tau-leptons are highly collimated, their visible decay products might overlap, degrading the reconstruction performance for each of the tau-leptons. A dedicated treatment attempting to tag the tau-lepton pair as a single object is required. The reconstruction algorithm is based on a large radius jet and its associated two leading subjets, and the identification uses a boosted decision tree to discriminate between signatures from tau+tau- systems and those arising from QCD jets. The efficiency of the identification algorithm is measured in Z gamma events using proton-proton collision data at root s = 13 TeV collected by the ATLAS experiment at the Large Hadron Collider between 2015 and 2018, corresponding to an integrated luminosity of 139 fb(-1). The resulting data-to-simulation scale factors are close to unity with uncertainties ranging from 26 to 37%.
This paper describes an algorithm for reconstructing and identifying a highly collimated hadronically decaying tau-lepton pair with low transverse momentum. When two tau-leptons are highly collimated, their visible decay products might overlap, degrading the reconstruction performance for each of the tau-leptons. A dedicated treatment attempting to tag the tau-lepton pair as a single object is required. The reconstruction algorithm is based on a large radius jet and its associated two leading subjets, and the identification uses a boosted decision tree to discriminate between signatures from tau+tau- systems and those arising from QCD jets. The efficiency of the identification algorithm is measured in Z gamma events using proton-proton collision data at root s = 13 TeV collected by the ATLAS experiment at the Large Hadron Collider between 2015 and 2018, corresponding to an integrated luminosity of 139 fb(-1). The resulting data-to-simulation scale factors are close to unity with uncertainties ranging from 26 to 37%.