LHCb has now made its first measurement of top quark production using Run-2 data collected in proton–proton collisions at the energy of 13 TeV.
The Higgs-to-two-photons decay played a crucial role in the discovery of the Higgs boson in 2012 owing to the excellent mass resolution and well-modelled backgrounds in this channel.
Tim Gershon of LHCb argues that apparently harmless academic discussions risk evolving into a negative outlook for the field.
In two new results, ATLAS presents strong evidence for the production of a single top quark in association with a Z boson.
No more than a few hundred tZq events and a dozen tttt events were expected after selection.
The coupling can be directly probed by measuring the rate of events in which a Higgs boson is produced in association with a pair of top quarks.
The Higgs boson decays to a pair of b quarks is by far the most frequent decay channel, however the signal is overwhelmed by QCD production.
While only retaining 40% of the events, the total uncertainty is improved by 19%, leading to a top-quark mass of 172.08±0.91 GeV.
The electroweak mixing angle is a key parameter defining how the SM unifies the electromagnetic and weak forces.
This year’s EPS conference was also the first large conference where the results from the 2015 and 2016 runs of the LHC at 13 TeV were presented.