Speaker
Tanguy Pierog
(IKP, KIT)
Description
Zero degree calorimeters at LHC like LHCf or in CMS provide the opportunity to identify pion-exchange reactions at very high energies p+p --> p+pi+n where the neutron escapes at zero degree and the pion and the proton subsequently collide in the detector. This provides a unique opportunity to learn about pion collisions, which are one of the largest uncertainties in air showers.