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Production of associated $Υ$ and open charm hadrons in $pp$ collisions at $\sqrt{s}=7$ and $8$TeV via double parton scattering

Abstract

Associated production of bottomonia and open charm hadrons in collisions at and TeV is observed using data corresponding to an integrated luminosity of 3 accumulated with the LHCb detector. The observation of five combinations, , , , and , is reported. Production cross-sections are measured for and pairs in the forward region. The measured cross-sections and the differential distributions indicate the dominance of double parton scattering as the main production mechanism. This allows a precise measurement of the effective cross-section for double parton scattering.