Combinations of single-top-quark production cross-section measurements and |ƒ<sub>LV</sub>V<sub>tb</sub>| determinations at √s = 7 and 8 TeV with the ATLAS and CMS experiments

This paper presents the combinations of single-top-quark production cross-section measurements by the ATLAS and CMS Collaborations, using data from LHC proton-proton collisions at s√ = 7 and 8 TeV corresponding to integrated luminosities of 1.17 to 5.1 fb⁻¹ at s√ = 7 TeV and 12.2 to 20.3 fb⁻¹ at s√...

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Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Arduh, Francisco Anuar, Dova, María Teresa, Hoya, Joaquín, Monticelli, Fernando Gabriel, Orellana, Gonzalo Enrique, Wahlberg, Hernán Pablo, The ATLAS and CMS collaborations
Formato: Articulo
Lenguaje:Inglés
Publicado: 2019
Materias:
Física
Hadron-Hadron scattering (experiments)
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/125511
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-125511
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Hadron-Hadron scattering (experiments)
spellingShingle Física
Hadron-Hadron scattering (experiments)
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Orellana, Gonzalo Enrique
Wahlberg, Hernán Pablo
The ATLAS and CMS collaborations
Combinations of single-top-quark production cross-section measurements and |ƒ<sub>LV</sub>V<sub>tb</sub>| determinations at √s = 7 and 8 TeV with the ATLAS and CMS experiments
topic_facet Física
Hadron-Hadron scattering (experiments)
description This paper presents the combinations of single-top-quark production cross-section measurements by the ATLAS and CMS Collaborations, using data from LHC proton-proton collisions at s√ = 7 and 8 TeV corresponding to integrated luminosities of 1.17 to 5.1 fb⁻¹ at s√ = 7 TeV and 12.2 to 20.3 fb⁻¹ at s√ = 8 TeV. These combinations are performed per centre-of-mass energy and for each production mode: t-channel, tW, and s-channel. The combined t-channel cross-sections are 67.5 ± 5.7 pb and 87.7 ± 5.8 pb at s√ = 7 and 8 TeV respectively. The combined tW cross-sections are 16.3 ± 4.1 pb and 23.1 ± 3.6 pb at s√ = 7 and 8 TeV respectively. For the s-channel cross-section, the combination yields 4.9 ± 1.4 pb at s√ = 8 TeV. The square of the magnitude of the CKM matrix element V<sub>tb</sub> multiplied by a form factor ƒ<sub>LV</sub> is determined for each production mode and centre-of-mass energy, using the ratio of the measured cross-section to its theoretical prediction. It is assumed that the top-quark-related CKM matrix elements obey the relation |V<sub>td</sub>|, |V<sub>ts</sub>| ≪ |V<sub>tb</sub>|. All the ƒ<sub>LV</sub>V<sub>tb</sub>|² determinations, extracted from individual ratios at s√ = 7 and 8 TeV, are combined, resulting in |ƒ<sub>LV</sub>V<sub>tb</sub>| = 1.02 ± 0.04 (meas.) ± 0.02 (theo.). All combined measurements are consistent with their corresponding Standard Model predictions.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Orellana, Gonzalo Enrique
Wahlberg, Hernán Pablo
The ATLAS and CMS collaborations
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Orellana, Gonzalo Enrique
Wahlberg, Hernán Pablo
The ATLAS and CMS collaborations
author_sort Alconada Verzini, María Josefina
title Combinations of single-top-quark production cross-section measurements and |ƒ<sub>LV</sub>V<sub>tb</sub>| determinations at √s = 7 and 8 TeV with the ATLAS and CMS experiments
title_short Combinations of single-top-quark production cross-section measurements and |ƒ<sub>LV</sub>V<sub>tb</sub>| determinations at √s = 7 and 8 TeV with the ATLAS and CMS experiments
title_full Combinations of single-top-quark production cross-section measurements and |ƒ<sub>LV</sub>V<sub>tb</sub>| determinations at √s = 7 and 8 TeV with the ATLAS and CMS experiments
title_fullStr Combinations of single-top-quark production cross-section measurements and |ƒ<sub>LV</sub>V<sub>tb</sub>| determinations at √s = 7 and 8 TeV with the ATLAS and CMS experiments
title_full_unstemmed Combinations of single-top-quark production cross-section measurements and |ƒ<sub>LV</sub>V<sub>tb</sub>| determinations at √s = 7 and 8 TeV with the ATLAS and CMS experiments
title_sort combinations of single-top-quark production cross-section measurements and |ƒ<sub>lv</sub>v<sub>tb</sub>| determinations at √s = 7 and 8 tev with the atlas and cms experiments
publishDate 2019
url http://sedici.unlp.edu.ar/handle/10915/125511
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