Measurements of fiducial cross-sections for t ̄t production with one or two additional b-jets in pp collisions at √s = 8 TeV using the ATLAS detector

Fiducial cross-sections for t ̄t production with one or two additional b-jets are reported, using an integrated luminosity of 20.3 fb<sup>−1</sup> of proton–proton collisions at a centre-of-mass energy of 8 TeV at the Large Hadron Collider, collected with the ATLAS detector. The cross-se...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Arduh, Francisco Anuar, Dova, María Teresa, Monticelli, Fernando Gabriel, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Ciencias Exactas
Física
top quark
b-jets
ATLAS detector
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/79709
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-79709
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
top quark
b-jets
ATLAS detector
spellingShingle Ciencias Exactas
Física
top quark
b-jets
ATLAS detector
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Measurements of fiducial cross-sections for t ̄t production with one or two additional b-jets in pp collisions at √s = 8 TeV using the ATLAS detector
topic_facet Ciencias Exactas
Física
top quark
b-jets
ATLAS detector
description Fiducial cross-sections for t ̄t production with one or two additional b-jets are reported, using an integrated luminosity of 20.3 fb<sup>−1</sup> of proton–proton collisions at a centre-of-mass energy of 8 TeV at the Large Hadron Collider, collected with the ATLAS detector. The cross-section times branching ratio for t ̄t events with at least one additional b-jet is measured to be 950 ± 70 (stat.) <sup>+240</sup><sub>−190</sub> (syst.) fb in the lepton-plus-jets channel and 50 ± 10 (stat.) <sup>+15</sup><sub>−10</sub> (syst.) fb in the eμ channel. The cross-section times branching ratio for events with at least two additional b-jets is measured to be 19.3 ± 3.5 (stat.) ± 5.7 (syst.) fb in the dilepton chan- nel (eμ,μμ, and ee) using a method based on tight selection criteria, and 13.5 ± 3.3 (stat.) ± 3.6 (syst.) fb using a looser selection that allows the background normalisation to be extracted from data. The latter method also measures a value of 1.30 ± 0.33 (stat.) ± 0.28 (syst.)% for the ratio of t ̄t production with two additional b-jets to t ̄t production with any two additional jets. All measurements are in good agreement with recent theory predictions.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Measurements of fiducial cross-sections for t ̄t production with one or two additional b-jets in pp collisions at √s = 8 TeV using the ATLAS detector
title_short Measurements of fiducial cross-sections for t ̄t production with one or two additional b-jets in pp collisions at √s = 8 TeV using the ATLAS detector
title_full Measurements of fiducial cross-sections for t ̄t production with one or two additional b-jets in pp collisions at √s = 8 TeV using the ATLAS detector
title_fullStr Measurements of fiducial cross-sections for t ̄t production with one or two additional b-jets in pp collisions at √s = 8 TeV using the ATLAS detector
title_full_unstemmed Measurements of fiducial cross-sections for t ̄t production with one or two additional b-jets in pp collisions at √s = 8 TeV using the ATLAS detector
title_sort measurements of fiducial cross-sections for t ̄t production with one or two additional b-jets in pp collisions at √s = 8 tev using the atlas detector
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/79709
work_keys_str_mv AT alconadaverzinimariajosefina measurementsoffiducialcrosssectionsforttproductionwithoneortwoadditionalbjetsinppcollisionsats8tevusingtheatlasdetector
AT alonsofrancisco measurementsoffiducialcrosssectionsforttproductionwithoneortwoadditionalbjetsinppcollisionsats8tevusingtheatlasdetector
AT arduhfranciscoanuar measurementsoffiducialcrosssectionsforttproductionwithoneortwoadditionalbjetsinppcollisionsats8tevusingtheatlasdetector
AT dovamariateresa measurementsoffiducialcrosssectionsforttproductionwithoneortwoadditionalbjetsinppcollisionsats8tevusingtheatlasdetector
AT monticellifernandogabriel measurementsoffiducialcrosssectionsforttproductionwithoneortwoadditionalbjetsinppcollisionsats8tevusingtheatlasdetector
AT wahlberghernanpablo measurementsoffiducialcrosssectionsforttproductionwithoneortwoadditionalbjetsinppcollisionsats8tevusingtheatlasdetector
AT theatlascollaboration measurementsoffiducialcrosssectionsforttproductionwithoneortwoadditionalbjetsinppcollisionsats8tevusingtheatlasdetector
bdutipo_str Repositorios
_version_ 1764820487082344448

Ejemplares similares