B-hadron production at the LHC from bottom-quark pair production at NNLO+PS

TL;DR

This paper provides the first high-precision NNLO+PS theoretical predictions for B-hadron production at the LHC, matching experimental measurements across multiple detectors and energies, enhancing understanding of QCD processes.

Contribution

It introduces the first NNLO+PS calculations for B-hadron production, improving theoretical accuracy and agreement with experimental data at the LHC.

Findings

Good agreement with ATLAS, CMS, and LHCb data

Accurate predictions for various cross sections and distributions

Enhanced understanding of bottom-quark pair production

Abstract

The production of B hadrons is among the most abundant fundamental QCD processes measured at the LHC. We present for the first time predictions for this process accurate to next-to-next-to-leading order in QCD perturbation theory by simulating bottom-quark pair production at this accuracy matched to parton showers. Our novel results are in good agreement with experimental data for the production of different types of B hadrons from ATLAS, CMS and LHCb at 7 TeV and/or 13 TeV, including various fiducial cross sections as well as single- and double-differential distributions, and 13 TeV/7 TeV cross-section ratios.