Speaker
Dr
Peter Kammel Kammel
(University of Washington, Seattle)
Description
The MuCap experiment at PSI has published its final result on $g_P$, the weak-pseudoscalar coupling of the proton.
A novel ultra-pure hydrogen TPC served as an imaging stopping volume. In gas, the $\mu p$ capture rate is relatively
immune to the poorly known molecular physics complications that plagued previous efforts by others.
The result, $g_P = 8.06 \pm 0.55 $ is in excellent agreement with chiral perturbation theory predictions and
provides a unambiguous and stringent test of low energy QCD. After summarizing the technique and the main results, the status
and prospects of this field will be reviewed.
Primary author
Dr
Peter Kammel Kammel
(University of Washington, Seattle)
