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Measurement of the $b\overline{b}$ dijet cross section in pp collisions at $\sqrt{s} = 7$  TeV with the ATLAS detector

2016-12-05Artigo científico Acesso aberto
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dc.contributor.authorATLAS collaboration (2855 authors)
dc.contributor.authorAguilar-Saavedra, Juan Antonio
dc.contributor.authorAmor Dos Santos, Susana Patricia
dc.contributor.authorAnjos, Nuno
dc.contributor.authorAraque, Juan Pedro
dc.contributor.authorCantrill, Robert
dc.contributor.authorCarvalho, João
dc.contributor.authorCastro, Nuno Filipe
dc.contributor.authorConde Muiño, Patricia
dc.contributor.authorDa Cunha Sargedas De Sousa, Mario Jose
dc.contributor.authorFiolhais, Miguel
dc.contributor.authorGalhardo, Bruno
dc.contributor.authorGomes, Agostinho
dc.contributor.authorGonçalo, Ricardo
dc.contributor.authorJorge, Pedro
dc.contributor.authorLopes, Lourenco
dc.contributor.authorMachado Miguens, Joana
dc.contributor.authorMaio, Amélia
dc.contributor.authorManeira, José
dc.contributor.authorOleiro Seabra, Luis Filipe
dc.contributor.authorOnofre, António
dc.contributor.authorPalma, Alberto
dc.contributor.authorPedro, Rute
dc.contributor.authorSantos, Helena
dc.contributor.authorSaraiva, João
dc.contributor.authorSilva, José
dc.contributor.authorTavares Delgado, Ademar
dc.contributor.authorVeloso, Filipe
dc.contributor.authorWolters, Helmut
dc.date.accessioned2019-02-04T10:50:53Z
dc.date.available2019-02-04T10:50:53Z
dc.date.issued2016-12-05
dc.date.updated2019-02-04T10:50:53Z
dc.description.abstractThe 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 $\sqrt{s} = 7$  TeV, using the ATLAS detector at the LHC. The data used correspond to an integrated luminosity of $\mathrm 4.2\,\text {fb}^{-1}$ . The cross section is measured for events with two identified b-jets with a transverse momentum $p_{\text {T}} > 20$  GeV 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 $p_{\text {T}} > 270$  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.
dc.description.versionPeer Reviewed
dc.identifierEur.Phys.J. C76 (2016) 670; DOI 10.1140/epjc/s10052-016-4521-y
dc.identifier.urihttp://dx.doi.org/10.1140/epjc/s10052-016-4521-y
dc.identifier.urihttp://hdl.handle.net/10400.26/27152
dc.language.isoeng
dc.titleMeasurement of the $b\overline{b}$ dijet cross section in pp collisions at $\sqrt{s} = 7$  TeV with the ATLAS detector
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspt
rcaap.typearticle

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LIP - AP - Física de Partículas e Astropartículas