Measurement of k<sub>T</sub> splitting scales in W →ℓν events at √s = 7 TeV with the ATLAS detector

A measurement of splitting scales, as defined by the k<sub>T</sub> clustering algorithm, is presented for final states containing a W boson produced in proton–proton collisions at a centre-of-mass energy of 7 TeV. The measurement is based on the full 2010 data sample corresponding to an...

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Autores principales: Alonso, Francisco, Anduaga, Xabier Sebastián, Dova, María Teresa, Monticelli, Fernando Gabriel, Tripiana, Martín F., The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2013
Materias:
Ciencias Exactas
Física
la̵rge hadron collider
quantum chromodynamics
Partículas Elementales
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/80982
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-80982
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
la̵rge hadron collider
quantum chromodynamics
Partículas Elementales
spellingShingle Ciencias Exactas
Física
la̵rge hadron collider
quantum chromodynamics
Partículas Elementales
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
The ATLAS Collaboration
Measurement of k<sub>T</sub> splitting scales in W →ℓν events at √s = 7 TeV with the ATLAS detector
topic_facet Ciencias Exactas
Física
la̵rge hadron collider
quantum chromodynamics
Partículas Elementales
description A measurement of splitting scales, as defined by the k<sub>T</sub> clustering algorithm, is presented for final states containing a W boson produced in proton–proton collisions at a centre-of-mass energy of 7 TeV. The measurement is based on the full 2010 data sample corresponding to an integrated luminosity of 36 pb<sup>−1</sup> which was collected using the ATLAS detector at the CERN Large Hadron Collider. Cluster splitting scales are measured in events containing W bosons decaying to electrons or muons. The measurement comprises the four hardest splitting scales in a k<sup>T</sup> cluster sequence of the hadronic activity accompanying the W boson, and ratios of these splitting scales. Backgrounds such as multi-jet and top-quark-pair production are subtracted and the results are corrected for detector effects. Predictions from various Monte Carlo event generators at particle level are compared to the data. Overall, reasonable agreement is found with all generators, but larger deviations between the predictions and the data are evident in the soft regions of the splitting scales.
format Articulo
Articulo
author Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
The ATLAS Collaboration
author_facet Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
The ATLAS Collaboration
author_sort Alonso, Francisco
title Measurement of k<sub>T</sub> splitting scales in W →ℓν events at √s = 7 TeV with the ATLAS detector
title_short Measurement of k<sub>T</sub> splitting scales in W →ℓν events at √s = 7 TeV with the ATLAS detector
title_full Measurement of k<sub>T</sub> splitting scales in W →ℓν events at √s = 7 TeV with the ATLAS detector
title_fullStr Measurement of k<sub>T</sub> splitting scales in W →ℓν events at √s = 7 TeV with the ATLAS detector
title_full_unstemmed Measurement of k<sub>T</sub> splitting scales in W →ℓν events at √s = 7 TeV with the ATLAS detector
title_sort measurement of k<sub>t</sub> splitting scales in w →ℓν events at √s = 7 tev with the atlas detector
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/80982
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