The inclusive cross-section for the associated production of a W boson and top quark is measured using data from proton-proton collisions at s=13 TeV. The dataset corresponds to an integrated luminosity of 3.2 fb−1, and was collected in 2015 by the ATLAS detector at the Large Hadron Collider at CERN. Events are selected requiring two opposite sign isolated leptons and at least one jet; they are separated into signal and control regions based on their jet multiplicity and the number of jets that are identified as containing b hadrons. The W t signal is then separated from the tt¯ background using boosted decision tree discriminants in two regions. The cross-section is extracted by fitting templates to the data distributions, and is measured to be σW t= 94 ± 10(stat.)− 22+ 28(syst.) ± 2(lumi.) pb. The measured value is in good agreement with the SM prediction of σtheory= 71.7±1.8 (scale)± 3.4 (PDF) pb [1].[Figure not available: see fulltext.].

M. Aaboud, G. Aad, B. Abbott, J. Abdallah, O. Abdinov, B. Abeloos, et al. (2018). Measurement of the cross-section for producing a W boson in association with a single top quark in pp collisions at â s=13 TeV with ATLAS. JOURNAL OF HIGH ENERGY PHYSICS, 2018(1), 1-42 [10.1007/JHEP01(2018)063].

Measurement of the cross-section for producing a W boson in association with a single top quark in pp collisions at √s=13 TeV with ATLAS

G. L. Alberghi;L. Bellagamba;S. Biondi;D. Boscherini;A. Bruni;G. Bruni;G. D’amen;S. De Castro;F. Fabbri;L. Fabbri;M. Franchini;A. Gabrielli;B. Giacobbe;F. Lasagni Manghi;L. Massa;A. Mengarelli;A. Polini;L. Rinaldi;M. Romano;C. Sbarra;N. Semprini-Cesari;M. Sioli;R. Spighi;G. Ucchielli;S. Valentinetti;M. Villa;C. Vittori;I. Vivarelli;A. Zoccoli;
2018

Abstract

The inclusive cross-section for the associated production of a W boson and top quark is measured using data from proton-proton collisions at s=13 TeV. The dataset corresponds to an integrated luminosity of 3.2 fb−1, and was collected in 2015 by the ATLAS detector at the Large Hadron Collider at CERN. Events are selected requiring two opposite sign isolated leptons and at least one jet; they are separated into signal and control regions based on their jet multiplicity and the number of jets that are identified as containing b hadrons. The W t signal is then separated from the tt¯ background using boosted decision tree discriminants in two regions. The cross-section is extracted by fitting templates to the data distributions, and is measured to be σW t= 94 ± 10(stat.)− 22+ 28(syst.) ± 2(lumi.) pb. The measured value is in good agreement with the SM prediction of σtheory= 71.7±1.8 (scale)± 3.4 (PDF) pb [1].[Figure not available: see fulltext.].
2018
M. Aaboud, G. Aad, B. Abbott, J. Abdallah, O. Abdinov, B. Abeloos, et al. (2018). Measurement of the cross-section for producing a W boson in association with a single top quark in pp collisions at â s=13 TeV with ATLAS. JOURNAL OF HIGH ENERGY PHYSICS, 2018(1), 1-42 [10.1007/JHEP01(2018)063].
M. Aaboud; G. Aad; B. Abbott; J. Abdallah; O. Abdinov; B. Abeloos; R. Aben; O. S. AbouZeid; N. L. Abraham; H. Abramowicz; H. Abreu; R. Abreu; Y. Abula...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/621538
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