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تسجيل مستخدم جديدPrecise branching ratio measurements in $^{19}$Ne beta decay and fundamental tests of the weak interaction
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We used the 8$pi$ $gamma$-ray spectrometer at the TRIUMF-ISAC radiocative ion beam facility to obtain high-precision branching ratios for $^{19}$Ne $beta^+$ decay to excited states in $^{19}$F. Together with other previous work, our measurements determine the superallowed $1/2^+ to 1/2^+$ beta branch to the ground state in $^{19}$F to be 99.9878(7)%, which is three times more precise than known previously. The implications of these measurements for testing a variety of weak interaction symmetries are discussed briefly.
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