Measurement of the b(b)over-bar dijet cross section in pp collisions at root s=7TeV with the ATLAS detector

M. Aaboud; G. Aad; B. Abbott; J. Abdallah; O. Abdinov; B Abeloos; R. Aben; O.S. AbouZeid; Abraham Nitzan; H. Abramowicz; Mogens Dam; Jørn Dines Hansen; Jørgen Beck Hansen; Stefania Xella; Peter Henrik Hansen; Troels Christian Petersen; Alejandro Alonso Diaz; James William Monk; Almut Maria Pingel; Ask Emil Løvschall-Jensen; Lotte Ansgaard Thomsen; Lars Egholm Pedersen; Graig Wiglesworth; Gorm Aske Gram Krohn Galster

doi:10.1140/epjc/s10052-016-4521-y

Measurement of the b(b)over-bar dijet cross section in pp collisions at root s=7TeV with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, J. Abdallah, O. Abdinov, B Abeloos, R. Aben, O.S. AbouZeid, Abraham Nitzan, H. Abramowicz, Mogens Dam, Jørn Dines Hansen, Jørgen Beck Hansen, Stefania Xella, Peter Henrik Hansen, Troels Christian Petersen, Alejandro Alonso Diaz, James William Monk, Almut Maria Pingel, Ask Emil Løvschall-JensenLotte Ansgaard Thomsen, Lars Egholm Pedersen, Graig Wiglesworth, Gorm Aske Gram Krohn Galster

Experimental Particle Physics

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Abstract

The dijet production cross section for jets containing a b-hadron (b-jets) has been measured in proton–proton collisions with a centre-of-mass energy of s=7 TeV, using the ATLAS detector at the LHC. The data used correspond to an integrated luminosity of 4.2fb-1. The cross section is measured for events with two identified b-jets with a transverse momentum p_T> 20 GeV and a minimum separation in the η–ϕ plane of Δ R= 0.4. At least one of the jets in the event is required to have p_T> 270 GeV. 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.

Original language	English
Article number	670
Journal	The European Physical Journal C: Particles and Fields
Volume	76
Issue number	12
ISSN	1434-6044
DOIs	https://doi.org/10.1140/epjc/s10052-016-4521-y
Publication status	Published - 1 Dec 2016

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Aaboud, M., Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Abeloos, B., Aben, R., AbouZeid, O. S., Nitzan, A., Abramowicz, H., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Alonso Diaz, A., Monk, J. W., Pingel, A. M., ... Galster, G. A. G. K. (2016). Measurement of the b(b)over-bar dijet cross section in pp collisions at root s=7TeV with the ATLAS detector. The European Physical Journal C: Particles and Fields, 76(12), [670]. https://doi.org/10.1140/epjc/s10052-016-4521-y

Aaboud, M, Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, Aben, R, AbouZeid, OS, Nitzan, A, Abramowicz, H, Dam, M , Hansen, JD , Hansen, JB , Xella, S , Hansen, PH , Petersen, TC, Alonso Diaz, A, Monk, JW, Pingel, AM, Løvschall-Jensen, AE, Thomsen, LA, Pedersen, LE, Wiglesworth, G & Galster, GAGK 2016, 'Measurement of the b(b)over-bar dijet cross section in pp collisions at root s=7TeV with the ATLAS detector', The European Physical Journal C: Particles and Fields, vol. 76, no. 12, 670. https://doi.org/10.1140/epjc/s10052-016-4521-y

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abstract = "The dijet production cross section for jets containing a b-hadron (b-jets) has been measured in proton–proton collisions with a centre-of-mass energy of s=7 TeV, using the ATLAS detector at the LHC. The data used correspond to an integrated luminosity of 4.2fb-1. The cross section is measured for events with two identified b-jets with a transverse momentum pT> 20 GeV and a minimum separation in the η–ϕ plane of Δ R= 0.4. At least one of the jets in the event is required to have pT> 270 GeV. 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.",

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AU - Aaboud, M.

AU - Aad, G.

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdinov, O.

AU - Abeloos, B

AU - Aben, R.

AU - AbouZeid, O.S.

AU - Nitzan, Abraham

AU - Abramowicz, H.

AU - Dam, Mogens

AU - Hansen, Jørn Dines

AU - Hansen, Jørgen Beck

AU - Xella, Stefania

AU - Hansen, Peter Henrik

AU - Petersen, Troels Christian

AU - Alonso Diaz, Alejandro

AU - Monk, James William

AU - Pingel, Almut Maria

AU - Løvschall-Jensen, Ask Emil

AU - Thomsen, Lotte Ansgaard

AU - Pedersen, Lars Egholm

AU - Wiglesworth, Graig

AU - Galster, Gorm Aske Gram Krohn

PY - 2016/12/1

Y1 - 2016/12/1

N2 - The dijet production cross section for jets containing a b-hadron (b-jets) has been measured in proton–proton collisions with a centre-of-mass energy of s=7 TeV, using the ATLAS detector at the LHC. The data used correspond to an integrated luminosity of 4.2fb-1. The cross section is measured for events with two identified b-jets with a transverse momentum pT> 20 GeV and a minimum separation in the η–ϕ plane of Δ R= 0.4. At least one of the jets in the event is required to have pT> 270 GeV. 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.

AB - The dijet production cross section for jets containing a b-hadron (b-jets) has been measured in proton–proton collisions with a centre-of-mass energy of s=7 TeV, using the ATLAS detector at the LHC. The data used correspond to an integrated luminosity of 4.2fb-1. The cross section is measured for events with two identified b-jets with a transverse momentum pT> 20 GeV and a minimum separation in the η–ϕ plane of Δ R= 0.4. At least one of the jets in the event is required to have pT> 270 GeV. 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.

U2 - 10.1140/epjc/s10052-016-4521-y

DO - 10.1140/epjc/s10052-016-4521-y

M3 - Journal article

C2 - 28316501

SN - 1434-6044

VL - 76

JO - The European Physical Journal C: Particles and Fields

JF - The European Physical Journal C: Particles and Fields

IS - 12

M1 - 670

ER -

Measurement of the b(b)over-bar dijet cross section in pp collisions at root s=7TeV with the ATLAS detector

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