We present a novel event-generation framework for the efficient simulation of vector boson plus multijet backgrounds at the high-luminosity LHC and at possible future hadron colliders. Message passing interface parallelization of parton-level and particle-level event generation and storage of parton-level event information using the HDF5 data format allow us to obtain leading-order merged Monte Carlo predictions with up to nine jets in the final state. The parton-level event samples generated in this manner correspond to an integrated luminosity of $3{\mathrm{ab}}^{-1}$ and are made publicly available for future phenomenological studies.

• Received 31 May 2019

DOI:https://doi.org/10.1103/PhysRevD.100.014024

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Published by the American Physical Society