Data di Pubblicazione:
2025
Abstract:
A tau lepton identification algorithm, DeepTau, based on convolutional neural network techniques, has been developed in the CMS experiment to discriminate reconstructed hadronic decays of tau leptons (τh) from quark or gluon jets and electrons and muons that are misreconstructed as τh candidates. The latest version of this algorithm, v2.5, includes domain adaptation by backpropagation, a technique that reduces discrepancies between collision data and simulation in the region with the highest purity of genuine τh candidates. Additionally, a refined training workflow improves classification performance with respect to the previous version of the algorithm, with a reduction of 30–50% in the probability for quark and gluon jets to be misidentified as τh candidates for given reconstruction and identification efficiencies. This paper presents the novel improvements introduced in the DeepTau algorithm and evaluates its performance in LHC proton-proton collision data at √s = 13 and 13.6 TeV collected in 2018 and 2022 with integrated luminosities of 60 and 35 fb−1, respectively. Techniques to calibrate the performance of the τh identification algorithm in simulation with respect to its measured performance in real data are presented, together with a subset of results among those measured for use in CMS physics analyses.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
calibration and fitting methods; cluster finding; Large detector-systems performance; Pattern recognition; particle identification methods
Elenco autori:
Hayrapetyan, A.; Makarenko, V.; Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Benato, L.; Bergauer, T.; Dragicevic, M.; Giordano, C.; Hussain, P. S.; Jeitler, M.; Krammer, N.; Li, A.; Liko, D.; Matthewman, M.; Mikulec, I.; Schieck, J.; Schöfbeck, R.; Schwarz, D.; Shooshtari, M.; Sonawane, M.; Waltenberger, W.; Wulz, C. -E.; Janssen, T.; Kwon, H.; Ocampo Henao, D.; Van Laer, T.; Van Mechelen, P.; Bierkens, J.; Breugelmans, N.; D'Hondt, J.; Dansana, S.; De Moor, A.; Delcourt, M.; Heyen, F.; Hong, Y.; Kashko, P.; Lowette, S.; Makarenko, I.; Müller, D.; Song, J.; Tavernier, S.; Tytgat, M.; Van Onsem, G. P.; Van Putte, S.; Vannerom, D.; Bilin, B.; Clerbaux, B.; Das, A. K.; De Bruyn, I.; De Lentdecker, G.; Evard, H.; Favart, L.; Gianneios, P.; Khalilzadeh, A.; Khan, F. A.; Malara, A.; Shahzad, M. A.; Thomas, L.; Vanden Bemden, M.; Vander Velde, C.; Vanlaer, P.; Zhang, F.; De Coen, M.; Dobur, D.; Gokbulut, G.; Knolle, J.; Lambrecht, L.; Marckx, D.; Skovpen, K.; Van Den Bossche, N.; Van Der Linden, J.; Vandenbroeck, J.; Wezenbeek, L.; Bein, S.; Benecke, A.; Bethani, A.; Bruno, G.; Cappati, A.; De Favereau De Jeneret, J.; Delaere, C.; Giammanco, A.; Guzel, A. O.; Lemaitre, V.; Lidrych, J.; Malek, P.; Mastrapasqua, P.; Turkcapar, S.; Alves, G. A.; Barroso Ferreira Filho, M.; Coelho, E.; Hensel, C.; Menezes De Oliveira, T.; Mora Herrera, C.; Rebello Teles, P.; Soeiro, M.; Tonelli Manganote, E. J.; Vilela Pereira, A.; Aldá Júnior, W. L.; Brandao Malbouisson, H.; Carvalho, W.; Chinellato, J.; Costa Reis, M.; Da Costa, E. M.; Da Silveira, G. G.; De Jesus Damiao, D.; Fonseca De Souza, S.; Gomes De Souza, R.; Jesus, S. S.; Laux Kuhn, T.; Macedo, M.; Mota Amarilo, K.; Mundim, L.; Nogima, H.; Pinheiro, J. P.; Santoro, A.; Sznajder, A.; Thiel, M.; Torres Da Silva De Araujo, F.; Bernardes, C. A.; Fernandez Perez Tomei, T. R.; Gregores, E. M.; Lopes Da Costa, B.; Maietto Silverio, I.; Mercadante, P. G.; Novaes, S. F.; Orzari, B.; Padula, Sandra S.; Scheurer, V.; Aleksandrov, A.; Antchev, G.; Danev, P.; Hadjiiska, R.; Iaydjiev, P.; Misheva, M.; Shopova, M.; Sultanov, G.; Dimitrov, A.; Litov, L.; Pavlov, B.; Petkov, P.; Petrov, A.; Keshri, S.; Laroze, D.; Thakur, S.; Brooks, W.; Cheng, T.; Javaid, T.; Wang, L.; Yuan, L.; Hu, Z.; Liang, Z.; Liu, J.; Wang, X.; Chen, G. M.; Chen, H. S.; Chen, M.; Chen, Y.; Hou, Q.; Hou, X.; Iemmi, F.; Jiang, C. H.; Kapoor, A.; Liao, H.; Liu, G.; Liu, Z. -A.; Song, J. N.; Song, S.; Tao, J.; Wang, C.; Wang, J.; Zhang, H.; Zhao, J.; Agapitos, A.; Ban, Y.; Carvalho Antunes De Oliveira, A.; Deng, S.; Guo, B.; Guo, Q.; Jiang, C.; Levin, A.; Li, C.; Li, Q.; Mao, Y.; Qian, S.; Qian, S. J.; Qin, X.; Sun, X.; Wang, D.; Wang, J.; Yang, H.; Zhang, M.; Zhao, Y.; Zhou, C.; Yang, S.; You, Z.; Jaffel, K.; Lu, N.; Bauer, G.; Li, B.; Wang, H.; Yi, K.; Zhang, J.; Li, Y.; Lin, Z.; Lu, C.; Xiao, M.; Avila, C.; Barbosa Trujillo, D. A.; Cabrera, A.; Florez, C.; Fraga, J.; Reyes Vega, J. A.; Rendón, C.; Rodriguez, M.; Ruales Barbosa, A. A.; Ruiz Alvarez, J. D.; Godinovic, N.; Lelas, D.; Sculac, A.; Kovac, M.; Petkovic, A.; Sculac, T.; Bargassa, P.; Brigljevic, V.; Chitroda, B. K.; Ferencek, D.; Jakovcic, K.; Starodumov, A.; Susa, T.; Attikis, A.; Christoforou, K.; Hadjiagapiou, A.; Leonidou, C.; Nicolaou, C.; Paizanos, L.; Ptochos, F.; Razis, P. A.; Rykaczewski, H.; Saka, H.; Stepennov, A.; Finger, M.; Finger, M.; Ayala, E.; Carrera Jarrin, E.; Khalil, S.; Salama, E.; Abdullah Al-Mashad, M.; Hussein, A.; Mohammed, H.; Ehataht, K.; Kadastik, M.; Lange, T.; Nielsen, C.; Pata, J.; Raidal, M.; Seeba, N.; Tani, L.; Milieva, A.; Osterberg, K.; Voutilainen, M.; Bin Norjoharuddeen, N.; Brücken, E.; Garcia, F.; Inkaew, P.; Kallonen, K. T. S.; Kumar Verma, R.; Lampén, T.; Lassila-Perini, K.; Lehtela, B.; Lehti, S.; Lindén, T.; Mancilla Xinto, N. R.; Myllymäki, M.; Rantanen, M. M.; Saariokari, S.; Toikka, N. T.; Tuominiemi, J.; Kirschenmann, H.; Luukka, P.; Petrow, H.; Besancon, M.; Couderc, F.; Dejardin,
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