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hep-ex2025
European Strategy for Particle Physics Update -- PIONEER: a next generation rare pion decay experiment
PIONEER Collaboration, A. Adelmann, W. Altmannshofer +76
PIONEER is a rapidly developing effort aimed to perform a pristine test of lepton flavour universality (LFU) and of the unitarity of the first row of the CKM matrix by significantl…
hep-ex2018
PEN experiment: a precise test of lepton universality
C. J. Glaser, D. Pocanic, L. P. Alonzi +26
With few open channels and uncomplicated theoretical description, charged pion decays are uniquely sensitive to certain standard model (SM) symmetries, the universality of weak fer…