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Measurement of the t \bar t production cross section using events with one lepton and at least one jet in pp collisions at $\sqrt{s} = 13$ TeV


CMS Collaboration; Canelli, Florencia; Kilminster, Benjamin; Aarestad, Thea; Caminada, Lea; De Cosa, Annapaoloa; Del Burgo, Riccardo; Donato, Silvio; Galloni, Camilla; Hinzmann, Andreas; Hreus, Tomas; Ngadiuba, Jennifer; Pinna, Deborah; Rauco, Giorgia; Robmann, Peter; Salerno, Daniel; Schweiger, Korbinian; Seitz, Claudia; Takahashi, Yuta; Zucchetta, Alberto; et al (2017). Measurement of the t \bar t production cross section using events with one lepton and at least one jet in pp collisions at $\sqrt{s} = 13$ TeV. Journal of High Energy Physics, 09:051.

Abstract

A measurement of the $t \overline t$ production cross section at $\sqrt{s} = 13$ TeV is presented using proton-proton collisions, corresponding to an integrated luminosity of 2.2 $fb^{−1}$, collected with the CMS detector at the LHC. Final states with one isolated charged lepton (electron or muon) and at least one jet are selected and categorized according to the accompanying jet multiplicity. From a likelihood fit to the invariant mass distribution of the isolated lepton and a jet identified as coming from the hadronization of a bottom quark, the cross section is measured to be $σ_{t \overline t}=888±2,(stat)^{+26}_{−28}(syst)±20(lumi) pb$, in agreement with the standard model prediction. Using the expected dependence of the cross section on the pole mass of the top quark ($m_t$), the value of $m_t$ is found to be 170.6 ± 2.7 GeV.

Abstract

A measurement of the $t \overline t$ production cross section at $\sqrt{s} = 13$ TeV is presented using proton-proton collisions, corresponding to an integrated luminosity of 2.2 $fb^{−1}$, collected with the CMS detector at the LHC. Final states with one isolated charged lepton (electron or muon) and at least one jet are selected and categorized according to the accompanying jet multiplicity. From a likelihood fit to the invariant mass distribution of the isolated lepton and a jet identified as coming from the hadronization of a bottom quark, the cross section is measured to be $σ_{t \overline t}=888±2,(stat)^{+26}_{−28}(syst)±20(lumi) pb$, in agreement with the standard model prediction. Using the expected dependence of the cross section on the pole mass of the top quark ($m_t$), the value of $m_t$ is found to be 170.6 ± 2.7 GeV.

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Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2017
Deposited On:11 Dec 2017 14:01
Last Modified:19 Feb 2018 08:51
Publisher:Springer
ISSN:1029-8479
OA Status:Gold
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1007/JHEP09(2017)051

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