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Measurement of the b(b)over-bar dijet cross section in pp collisions at root s=7TeV with the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-8913-0981
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Number of Authors: 28552016 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 76, no 12, article id 670Article in journal (Refereed) Published
Abstract [en]

The dijet production cross section for jets containing a b-hadron (b-jets) has been measured in protonproton collisions with a centre-of-mass energy of root s = 7TeV, using the ATLAS detector at the LHC. The data used correspond to an integrated luminosity of 4.2 fb(-1). The cross section is measured for events with two identified b-jets with a transverse momentum pT > 20GeV and a minimum separation in the eta-phi plane of Delta R = 0.4. At least one of the jets in the event is required to have p(T) > 270GeV. The cross section is measured differentially as a function of dijet invariant mass, dijet transverse momentum, boost of the dijet system, and the rapidity difference, azimuthal angle and angular distance between the b-jets. The results are compared to different predictions of leading order and next-to-leading order perturbative quantum chromodynamics matrix elements supplemented with models for parton-showers and hadronization.

Place, publisher, year, edition, pages
2016. Vol. 76, no 12, article id 670
Keywords [en]
HEAVY-QUARK PRODUCTION; P(P)OVER-BAR COLLISIONS; 1.8 TEV; HADRONIC COLLISIONS; ROOT-S
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-200288DOI: 10.1140/epjc/s10052-016-4521-yISI: 000389893600002Scopus ID: 2-s2.0-85003696262OAI: oai:DiVA.org:kth-200288DiVA, id: diva2:1067845
Note

QC 20170123

Available from: 2017-01-23 Created: 2017-01-23 Last updated: 2017-11-29Bibliographically approved

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Sidebo, P. EdvinStrandberg, Jonas

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