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Heavy flavour production in ATLAS

We present a measurement of the inclusive and dijet differential cross sections of jets containing heavy flavour in proton-proton collisions at $sqrt{s} = 7$ TeV using data collected with the ATLAS detector. Jets are reconstructed using the anti-$k_{t}$ algorithm with jet radius parameter $R=0.4$. T...

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Autor principal: Salzburger, A
Lenguaje:eng
Publicado: 2011
Materias:
Acceso en línea:http://cds.cern.ch/record/1390478
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author Salzburger, A
author_facet Salzburger, A
author_sort Salzburger, A
collection CERN
description We present a measurement of the inclusive and dijet differential cross sections of jets containing heavy flavour in proton-proton collisions at $sqrt{s} = 7$ TeV using data collected with the ATLAS detector. Jets are reconstructed using the anti-$k_{t}$ algorithm with jet radius parameter $R=0.4$. The presence of a displaced vertex from the decay of long-lived hadrons, or the presence of a muon with significant transverse momentum relative to the jet axis, is used to select a jet sample enriched in $b$-jets and the invariant mass of the charged particle tracks forming the vertex is fitted to extract the fraction of jets from $b$-quark production. The inclusive cross section is measured as a function of the jet transverse momentum, in the range $20 < p_{mathrm{T}} < 260 $ GeV, and of rapidity, in the range $ 0 < |y| < 2.1$, such that jets are fully contained in the tracking detectors of ATLAS. The dijet cross section is measured in the same rapidity range as a function of the dijet invariant mass, extending up to 670 GeV. The resulting cross sections are compared with next-to-leading-order QCD predictions.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
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spelling cern-13904782019-09-30T06:29:59Zhttp://cds.cern.ch/record/1390478engSalzburger, AHeavy flavour production in ATLASDetectors and Experimental TechniquesWe present a measurement of the inclusive and dijet differential cross sections of jets containing heavy flavour in proton-proton collisions at $sqrt{s} = 7$ TeV using data collected with the ATLAS detector. Jets are reconstructed using the anti-$k_{t}$ algorithm with jet radius parameter $R=0.4$. The presence of a displaced vertex from the decay of long-lived hadrons, or the presence of a muon with significant transverse momentum relative to the jet axis, is used to select a jet sample enriched in $b$-jets and the invariant mass of the charged particle tracks forming the vertex is fitted to extract the fraction of jets from $b$-quark production. The inclusive cross section is measured as a function of the jet transverse momentum, in the range $20 < p_{mathrm{T}} < 260 $ GeV, and of rapidity, in the range $ 0 < |y| < 2.1$, such that jets are fully contained in the tracking detectors of ATLAS. The dijet cross section is measured in the same rapidity range as a function of the dijet invariant mass, extending up to 670 GeV. The resulting cross sections are compared with next-to-leading-order QCD predictions.ATL-PHYS-PROC-2011-166oai:cds.cern.ch:13904782011-10-14
spellingShingle Detectors and Experimental Techniques
Salzburger, A
Heavy flavour production in ATLAS
title Heavy flavour production in ATLAS
title_full Heavy flavour production in ATLAS
title_fullStr Heavy flavour production in ATLAS
title_full_unstemmed Heavy flavour production in ATLAS
title_short Heavy flavour production in ATLAS
title_sort heavy flavour production in atlas
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1390478
work_keys_str_mv AT salzburgera heavyflavourproductioninatlas