Precision measurement of the $\beta$-asymmetry in spin-polarized ${}^{37}\mathrm{K}$ decay

B. Fenker, A. Gorelov, D. Melconian +13

Using TRIUMF's neutral atom trap, TRINAT, for nuclear $\beta$ decay, we have measured the $\beta$ asymmetry with respect to the initial nuclear spin in ${}^{37}\mathrm{K}$ to be $A_β=-0.5707…