A search for tt̄ resonances in lepton+jets events with highly boosted top quarks collected in pp collisions at √s = 7TeV with the ATLAS detector

A search for resonant production of high-mass top-quark pairs is performed on 2.05 fb -1 of proton-proton collisions at √s = 7 TeV collected in 2011 with the ATLAS experiment at the Large Hadron Collider. This analysis of the lepton+jets final state is specifically designed for the particular topolo...

Descripción completa

Detalles Bibliográficos
Publicado: 2012
Materias:
Hadron-hadron scattering
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2012_n9_p_Aad
http://hdl.handle.net/20.500.12110/paper_11266708_v2012_n9_p_Aad
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_11266708_v2012_n9_p_Aad
record_format dspace
spelling paper:paper_11266708_v2012_n9_p_Aad2023-06-08T16:08:19Z A search for tt̄ resonances in lepton+jets events with highly boosted top quarks collected in pp collisions at √s = 7TeV with the ATLAS detector Hadron-hadron scattering A search for resonant production of high-mass top-quark pairs is performed on 2.05 fb -1 of proton-proton collisions at √s = 7 TeV collected in 2011 with the ATLAS experiment at the Large Hadron Collider. This analysis of the lepton+jets final state is specifically designed for the particular topology that arises from the decay of highly boosted top quarks. The observed tt̄ invariant mass spectrum is found to be compatible with the Standard Model prediction and 95% credibility level upper limits are derived on the tt̄ production rate through new massive states. An upper limit of 0.7 pb is set on the production cross section times branching fraction of a narrow 1 TeV resonance. A Kaluza-Klein gluon with a mass smaller than 1.5 TeV is excluded. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2012_n9_p_Aad http://hdl.handle.net/20.500.12110/paper_11266708_v2012_n9_p_Aad
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Hadron-hadron scattering
spellingShingle Hadron-hadron scattering
A search for tt̄ resonances in lepton+jets events with highly boosted top quarks collected in pp collisions at √s = 7TeV with the ATLAS detector
topic_facet Hadron-hadron scattering
description A search for resonant production of high-mass top-quark pairs is performed on 2.05 fb -1 of proton-proton collisions at √s = 7 TeV collected in 2011 with the ATLAS experiment at the Large Hadron Collider. This analysis of the lepton+jets final state is specifically designed for the particular topology that arises from the decay of highly boosted top quarks. The observed tt̄ invariant mass spectrum is found to be compatible with the Standard Model prediction and 95% credibility level upper limits are derived on the tt̄ production rate through new massive states. An upper limit of 0.7 pb is set on the production cross section times branching fraction of a narrow 1 TeV resonance. A Kaluza-Klein gluon with a mass smaller than 1.5 TeV is excluded.
title A search for tt̄ resonances in lepton+jets events with highly boosted top quarks collected in pp collisions at √s = 7TeV with the ATLAS detector
title_short A search for tt̄ resonances in lepton+jets events with highly boosted top quarks collected in pp collisions at √s = 7TeV with the ATLAS detector
title_full A search for tt̄ resonances in lepton+jets events with highly boosted top quarks collected in pp collisions at √s = 7TeV with the ATLAS detector
title_fullStr A search for tt̄ resonances in lepton+jets events with highly boosted top quarks collected in pp collisions at √s = 7TeV with the ATLAS detector
title_full_unstemmed A search for tt̄ resonances in lepton+jets events with highly boosted top quarks collected in pp collisions at √s = 7TeV with the ATLAS detector
title_sort search for tt̄ resonances in lepton+jets events with highly boosted top quarks collected in pp collisions at √s = 7tev with the atlas detector
publishDate 2012
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2012_n9_p_Aad
http://hdl.handle.net/20.500.12110/paper_11266708_v2012_n9_p_Aad
_version_ 1768543958631186432

Ejemplares similares