Speaker
Description
High energy hadron-hadron collisions can provide many valuable inputs for cosmic ray physics. Forward hadron production measurements at the CERN Large Hadron Collider (LHC) probe equivalent fixed target collision energies of above a PeV, which are a crucial input for modelling of ultra high energy cosmic ray air showers. Recently the new LHC experiments, FASER and SND@LHC, have carried out the first studies with TeV neutrinos produced in the forward region of the LHC collisions, introducing a new tool to probe forward light- and heavy-hadron production. The 2025 LHC programme includes, for the first time, O-O and p-O collisions which will provide improved input for cosmic ray shower models, particularly with measurements from the dedicated LHCf experiment. In addition, an updated measurement of multi-muon cosmic ray events observed in the ALICE detector was recently released. This talk will summarise recent physics results and future prospects relevant for cosmic ray measurements from the suite of experiments at the LHC.
