Measurement of the alignment positron momentum correlation in N-12 ---> C-12 (g.s.) by spontaneous level mixing technique: improved evidence against a second class axial current

Brandle, H., Miklos, G., Roesch, L. Ph., Telegdi, V. L., Truttmann, P., Zehnder, A., Grenacs, L., Lebrun, P., & Lehmann, J. (1978). Measurement of the alignment positron momentum correlation in N-12 ---> C-12 (g.s.) by spontaneous level mixing technique: improved evidence against a second class axial current. Physical Review Letters, 41, 299-302. https://doi.org/10.1103/PhysRevLett.41.299 (Original work published 1978)