Measurement of the top quark pair production cross section in dilepton final states containing one τ lepton in pp collisions at s√  = 13 TeV

CMS Collaboration; Florencia Canelli; Benjamin Kilminster; Lea Caminada; Cristina Botta; Thea Aarrestad; Danyyl Brzhechko; Annapaoloa Cosa; Riccardo Del Burgo; Silvio Donato; Jaana Heikkila; Marc Huwiler; Arash Jofrehei; Stefanos Leontsinis; Anna Macchiolo; Peter Meiring; Vinicius Mikuni; Marino Missiroli; Umberto Molinatti; Izaak Neutelings; Giorgia Rauco; Peter Robmann; Daniel Salerno; Korbinian Schweiger; Yuta Takahashi; Sebastien Wertz; Alberto Zucchetta

doi:10.1007/JHEP02(2020)191

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Measurement of the top quark pair production cross section in dilepton final states containing one τ lepton in pp collisions at s√ = 13 TeV

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Measurement of the top quark pair production cross section in dilepton final states containing one τ lepton in pp collisions at s√ = 13 TeV

CMS Collaboration, Florencia Canelli, Benjamin Kilminster, Lea Caminada, Cristina Botta, Thea Aarrestad, Danyyl Brzhechko, Annapaoloa Cosa, Riccardo Del Burgo, Silvio Donato, …

Journal of high energy physics : JHEP, Vol.2020(2), 191

02/28/2020

DOI: 10.1007/JHEP02(2020)191

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Abstract

The cross section of top quark pair production is measured in the tt¯→(ℓνℓ)(τhντ)bb¯¯¯tt¯→(ℓ�ℓ)(τh�τ)bb¯ final state, where τh refers to the hadronic decays of the τ lepton, and ℓ is either an electron or a muon. The data sample corresponds to an integrated luminosity of 35.9 fb−1 collected in proton-proton collisions at s√� = 13 TeV with the CMS detector. The measured cross section is σtt¯σtt¯ = 781 ± 7 (stat) ± 62 (syst) ± 20 (lumi) pb, and the ratio of the partial width Γ(t → τντb) to the total decay width of the top quark is measured to be 0.1050 ± 0.0009 (stat) ± 0.0071 (syst). This is the first measurement of the tt¯tt¯ production cross section in proton-proton collisions at s√� = 13 TeV that explicitly includes τ leptons. The ratio of the cross sections in the ℓτh and ℓℓ final states yields a value Rℓτh/ll�ℓτh/�� = 0.973 ± 0.009 (stat) ± 0.066 (syst), consistent with lepton universality.

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Physics Institute

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Title: Subtitle: Measurement of the top quark pair production cross section in dilepton final states containing one τ lepton in pp collisions at s√ = 13 TeV
Creators: CMS Collaboration
Florencia Canelli
Benjamin Kilminster
Lea Caminada
Cristina Botta
Thea Aarrestad
Danyyl Brzhechko
Annapaoloa Cosa
Riccardo Del Burgo
Silvio Donato
Jaana Heikkila
Marc Huwiler
Arash Jofrehei
Stefanos Leontsinis
Anna Macchiolo
Peter Meiring
Vinicius Mikuni
Marino Missiroli
Umberto Molinatti
Izaak Neutelings
Giorgia Rauco
Peter Robmann
Daniel Salerno
Korbinian Schweiger
Yuta Takahashi
Sebastien Wertz
Alberto Zucchetta
Contributors: Y Onel (Contributor) - University of Iowa, Physics and Astronomy
J Nachtman (Contributor) - University of Iowa, Physics and Astronomy
Resource Type: Journal article
Publication Details: Journal of high energy physics : JHEP, Vol.2020(2), 191
DOI: 10.1007/JHEP02(2020)191
ISSN: 1126-6708
eISSN: 1029-8479
Publisher: Springer
Language: English
Date published: 02/28/2020
Academic Unit: Physics and Astronomy
Record Identifier: 9984428791102771

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