Identification of hadronic tau lepton decays using a deep neural network
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Dosyalar
Tarih
2022-07-01
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Institute of Physics
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Abstract: A new algorithm is presented to discriminate reconstructed hadronic decays of tau leptons (? h) that originate from genuine tau leptons in the CMS detector against ? h candidates that originate from quark or gluon jets, electrons, or muons. The algorithm inputs information from all reconstructed particles in the vicinity of a ? h candidate and employs a deep neural network with convolutional layers to efficiently process the inputs. This algorithm leads to a significantly improved performance compared with the previously used one. For example, the efficiency for a genuine ? h to pass the discriminator against jets increases by 10-30% for a given efficiency for quark and gluon jets. Furthermore, a more efficient ? h reconstruction is introduced that incorporates additional hadronic decay modes. The superior performance of the new algorithm to discriminate against jets, electrons, and muons and the improved ? h reconstruction method are validated with LHC proton-proton collision data at s = 13 TeV. © 2022 CERN.
Açıklama
Anahtar Kelimeler
calibration and fitting methods, cluster finding, Large detector systems for particle and astroparticle physics, Particle identification methods
Kaynak
Journal of Instrumentation
WoS Q Değeri
Q2
