Franklin, MelissaHuth, JohnMorii, Masahiro2023-07-19Masahiro Morii . Measurement of b-hadron pair production with the ATLAS detector in proton-proton collisions at s√=8 TeV. JHEP, 2017. (ATLAS Collab. )https://nrs.harvard.edu/URN-3:HUL.INSTREPOS:37376550A 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.en-USJournal Article2018-07-2020172023-07-19