Neutron Lifetime Puzzle

Session

Future Measurements and Experimental Strategies I

13 Sept 2025, 14:30

WHGA/001 - Auditorium (PSI)

Conveners

Future Measurements and Experimental Strategies I

• Wolfgang Schreyer (Oak Ridge National Laboratory)

6. τSPECT- towards a new measurement of the free neutron lifetime in a full-3D magnetic trap

Prof. Martin Fertl (Johannes Gutenberg University Mainz)

13/09/2025, 14:30

invited

Neutron physics can provide cornerstone ingredients for a high-precision test of the Cabibbo-Kobayashi-Maskawa (CKM) matrix unitarity without nuclear structure corrections. The matrix element Vud is extracted from the combination of a high-accuracy determination of λ, the ratio of axial-vector and vector coupling strength of the weak interaction, a commensurate theoretical description of...