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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.ORCID iD: 0000-0003-3867-0336
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: 2019-12-04Bibliographically approved

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Sidebo, P. EdvinStrandberg, Jonas

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