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Measurement of b-hadron pair production with the ATLAS detector in proton-proton collisions at √s = 8 TeV
ATLAS Collaboration
ATLAS Collaboration
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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 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/ψ → μμ, 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 ± 0.1(stat.) ± 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.
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Date
2017-11-10
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Springer Verlag
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ATLAS_Collab_2017.pdf
Adobe PDF, 1022.07 KB
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B physics, Hadron-Hadron scattering (experiments)
Citation
The ATLAS collaboration, Aaboud, M., Aad, G. et al. J. High Energ. Phys. (2017) 2017: 62. https://doi.org/10.1007/JHEP11(2017)062