Observation of tW production in the single-lepton channel in pp collisions at √s = 13 TeV

Observation of tW production in the single-lepton channel in pp collisions at √s = 13 TeV

Dettagli Bibliografici
Parent link:	Journal of High Energy Physics Vol. 2021, iss. 11.— 2021.— [111, 39 p.]
Ente Autore:	Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Altri autori:	Tumasyan A. R., Adam W. Wolfgang, Andrejkovic J. W. Aleksandr Dmitrievich, Babaev A. A. Anton Anatoljevich, Okhotnikov V. V. Vitaly Vladimirovich
Riassunto:	Title screen A measurement of the cross section of the associated production of a single top quark and a W boson in final states with a muon or electron and jets in proton-proton collisions at √s = 13 TeV is presented. The data correspond to an integrated luminosity of 36 fb−1 collected with the CMS detector at the CERN LHC in 2016. A boosted decision tree is used to separate the tW signal from the dominant tt¯t¯ background, whilst the subleading W+jets and multijet backgrounds are constrained using data-based estimates. This result is the first observation of the tW process in final states containing a muon or electron and jets, with a significance exceeding 5 standard deviations. The cross section is determined to be 89 ± 4 (stat) ± 12 (syst) pb, consistent with the standard model.
Lingua:	inglese
Pubblicazione:	2021
Soggetti:	электронный ресурс труды учёных ТПУ Hadron-Hadron scattering (experiments) Top physics
Accesso online:	https://doi.org/10.1007/JHEP11(2021)111
Natura:	Elettronico Capitolo di libro
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=668745

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