Cargando…

Measurement of the Cross Section of W Bosons Produced in pp Collisions at sqrt{s} = 7 TeV With the ATLAS Detector

This dissertation presents a measurement of the inclusive W boson cross section in the muon decay channel, using 7 TeV proton-proton collisions at the Large Hadron Collider. The measurement probes Standard Model QCD predictions at a new regime, at high-Q^2 and low-x in the parton distribution functi...

Descripción completa

Detalles Bibliográficos
Autor principal: Prasad, Srivas
Lenguaje:eng
Publicado: 2011
Materias:
Acceso en línea:http://cds.cern.ch/record/1390517
_version_ 1780923324757442560
author Prasad, Srivas
author_facet Prasad, Srivas
author_sort Prasad, Srivas
collection CERN
description This dissertation presents a measurement of the inclusive W boson cross section in the muon decay channel, using 7 TeV proton-proton collisions at the Large Hadron Collider. The measurement probes Standard Model QCD predictions at a new regime, at high-Q^2 and low-x in the parton distribution functions. It is also fruitful in understanding the ATLAS detector response to the production of leptons and neutrinos, which are present in many other physics signals. The dataset used corresponds to an integrated luminosity of 33 pb−1, collected by the ATLAS detector during 2010. Lepton quality, kinematic, and isolation requirements, as well as missing energy and transverse mass criteria are adopted to extract the W → μν signal. The major backgrounds come from W → τν, Z → μμ where a muon is lost, and from QCD, particularly from heavy-flavor quark decays. Cross sections and kinematic distributions are compared with Standard Model expectations using next-to-leading-order QCD calculations and several PDF sets.
id cern-1390517
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
record_format invenio
spelling cern-13905172019-09-30T06:29:59Zhttp://cds.cern.ch/record/1390517engPrasad, SrivasMeasurement of the Cross Section of W Bosons Produced in pp Collisions at sqrt{s} = 7 TeV With the ATLAS DetectorParticle Physics - ExperimentThis dissertation presents a measurement of the inclusive W boson cross section in the muon decay channel, using 7 TeV proton-proton collisions at the Large Hadron Collider. The measurement probes Standard Model QCD predictions at a new regime, at high-Q^2 and low-x in the parton distribution functions. It is also fruitful in understanding the ATLAS detector response to the production of leptons and neutrinos, which are present in many other physics signals. The dataset used corresponds to an integrated luminosity of 33 pb−1, collected by the ATLAS detector during 2010. Lepton quality, kinematic, and isolation requirements, as well as missing energy and transverse mass criteria are adopted to extract the W → μν signal. The major backgrounds come from W → τν, Z → μμ where a muon is lost, and from QCD, particularly from heavy-flavor quark decays. Cross sections and kinematic distributions are compared with Standard Model expectations using next-to-leading-order QCD calculations and several PDF sets.CERN-THESIS-2011-125oai:cds.cern.ch:13905172011
spellingShingle Particle Physics - Experiment
Prasad, Srivas
Measurement of the Cross Section of W Bosons Produced in pp Collisions at sqrt{s} = 7 TeV With the ATLAS Detector
title Measurement of the Cross Section of W Bosons Produced in pp Collisions at sqrt{s} = 7 TeV With the ATLAS Detector
title_full Measurement of the Cross Section of W Bosons Produced in pp Collisions at sqrt{s} = 7 TeV With the ATLAS Detector
title_fullStr Measurement of the Cross Section of W Bosons Produced in pp Collisions at sqrt{s} = 7 TeV With the ATLAS Detector
title_full_unstemmed Measurement of the Cross Section of W Bosons Produced in pp Collisions at sqrt{s} = 7 TeV With the ATLAS Detector
title_short Measurement of the Cross Section of W Bosons Produced in pp Collisions at sqrt{s} = 7 TeV With the ATLAS Detector
title_sort measurement of the cross section of w bosons produced in pp collisions at sqrt{s} = 7 tev with the atlas detector
topic Particle Physics - Experiment
url http://cds.cern.ch/record/1390517
work_keys_str_mv AT prasadsrivas measurementofthecrosssectionofwbosonsproducedinppcollisionsatsqrts7tevwiththeatlasdetector