Speaker
Description
Recent advances in jet reconstruction and machine-learning-based flavour tagging have significantly expanded the physics reach of the LHCb experiment beyond its traditional core programme. A new high-performance tagger exploiting full jet-constituent and secondary-vertex information enables precise separation of b, c and light-flavour jets in the forward region, providing a powerful tool for studies of heavy-quark final states. These developments underpin two new measurements at 13 TeV: the first LHCb searches for Higgs boson decays to bb and cc, and precision measurements of forward top-quark production in the muon plus b-jet channel. Improved flavour tagging allows robust control of QCD backgrounds and enhances sensitivity to Higgs decays to heavy quarks, while in top physics it enables differential cross-section and charge-asymmetry measurements in a unique rapidity regime complementary to ATLAS and CMS. This contribution presents the methods, results, and their implications for Higgs-coupling determinations and electroweak and top phenomenology, highlighting the growing role of LHCb in the broader LHC physics programme.
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