Measurement of <i>b</i>-hadron pair production with the ATLAS detector in proton-proton collisions at √<i>s</i>=8 TeV



Aaboud, M, Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2841 more authors) (2017) Measurement of <i>b</i>-hadron pair production with the ATLAS detector in proton-proton collisions at √<i>s</i>=8 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 11 (11). 62-.

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Abstract

A measurement of $b$-hadron pair production is presented, based on a data set corresponding to an integrated luminosity of 11.4 fb$^{-1}$ of proton--proton collisions recorded at $\sqrt{s}=8$ TeV with the ATLAS detector at the LHC. Events are selected in which a $b$-hadron is reconstructed in a decay channel containing $J/\psi \rightarrow \mu\mu$, and a second $b$-hadron is reconstructed in a decay channel containing a muon. Results are presented in a fiducial volume defined by kinematic requirements on three muons based on those used in the analysis. The fiducial cross section is measured to be $17.7 \pm 0.1 ($stat.$) \pm 2.0 ($syst.$)$ nb. A number of normalised differential cross sections are also measured, and compared to predictions from the Pythia8, Herwig++, MadGraph5\_aMC@NLO+Pythia8 and Sherpa event generators, providing new constraints on heavy flavour production.

Item Type: Article
Additional Information: 49 pages in total, author list starting page 28, 10 figures, 1 table, submitted to JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/BPHY-2015-04/
Uncontrolled Keywords: B physics, Hadron-Hadron scattering (experiments)
Depositing User: Symplectic Admin
Date Deposited: 18 Dec 2017 09:09
Last Modified: 14 Oct 2023 08:43
DOI: 10.1007/JHEP11(2017)062
Open Access URL: http://doi.org/10.1007/JHEP11(2017)062
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3014285