Differential top-antitop cross-section measurements as a function of observables constructed from final-state particles using pp collisions at √s = 7 TeV in the ATLAS detector
Various differential cross-sections are measured in top-quark pair (t¯t) events produced in proton-proton collisions at a centre-of-mass energy of √s = 7TeV at the LHC with the ATLAS detector. These differential cross-sections are presented in a data set corresponding to an integrated luminosity...
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| Autores principales: | , , , , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
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2015
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/79097 |
| Aporte de: |
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I19-R120-10915-79097 |
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| 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 hadron-hadron scattering top physics top quark ATLAS detector |
| spellingShingle |
Ciencias Exactas Física hadron-hadron scattering top physics top quark ATLAS detector Alconada Verzini, María Josefina Alonso, Francisco Anduaga, Xabier Sebastián Arduh, Francisco Anuar Dova, María Teresa Monticelli, Fernando Gabriel Wahlberg, Hernán Pablo The ATLAS Collaboration Differential top-antitop cross-section measurements as a function of observables constructed from final-state particles using pp collisions at √s = 7 TeV in the ATLAS detector |
| topic_facet |
Ciencias Exactas Física hadron-hadron scattering top physics top quark ATLAS detector |
| description |
Various differential cross-sections are measured in top-quark pair (t¯t) events
produced in proton-proton collisions at a centre-of-mass energy of √s = 7TeV at the LHC
with the ATLAS detector. These differential cross-sections are presented in a data set
corresponding to an integrated luminosity of 4.6 fb−1. The differential cross-sections are
presented in terms of kinematic variables, such as momentum, rapidity and invariant mass,
of a top-quark proxy referred to as the pseudo-top-quark as well as the pseudo-top-quark
pair system. The dependence of the measurement on theoretical models is minimal. The measurements are performed on t¯t events in the lepton+jets channel, requiring
exactly one charged lepton and at least four jets with at least two of them tagged as
originating from a b-quark. The hadronic and leptonic pseudo-top-quarks are defined via
the leptonic or hadronic decay mode of the W boson produced by the top-quark decay
in events with a single charged lepton. Differential cross-section measurements of the
pseudo-top-quark variables are compared with several Monte Carlo models that implement
next-to-leading order or leading-order multi-leg matrix-element calculations. |
| format |
Articulo Articulo |
| author |
Alconada Verzini, María Josefina Alonso, Francisco Anduaga, Xabier Sebastián Arduh, Francisco Anuar Dova, María Teresa Monticelli, Fernando Gabriel Wahlberg, Hernán Pablo The ATLAS Collaboration |
| author_facet |
Alconada Verzini, María Josefina Alonso, Francisco Anduaga, Xabier Sebastián Arduh, Francisco Anuar Dova, María Teresa Monticelli, Fernando Gabriel Wahlberg, Hernán Pablo The ATLAS Collaboration |
| author_sort |
Alconada Verzini, María Josefina |
| title |
Differential top-antitop cross-section measurements as a function of observables constructed from final-state particles using pp collisions at √s = 7 TeV in the ATLAS detector |
| title_short |
Differential top-antitop cross-section measurements as a function of observables constructed from final-state particles using pp collisions at √s = 7 TeV in the ATLAS detector |
| title_full |
Differential top-antitop cross-section measurements as a function of observables constructed from final-state particles using pp collisions at √s = 7 TeV in the ATLAS detector |
| title_fullStr |
Differential top-antitop cross-section measurements as a function of observables constructed from final-state particles using pp collisions at √s = 7 TeV in the ATLAS detector |
| title_full_unstemmed |
Differential top-antitop cross-section measurements as a function of observables constructed from final-state particles using pp collisions at √s = 7 TeV in the ATLAS detector |
| title_sort |
differential top-antitop cross-section measurements as a function of observables constructed from final-state particles using pp collisions at √s = 7 tev in the atlas detector |
| publishDate |
2015 |
| url |
http://sedici.unlp.edu.ar/handle/10915/79097 |
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