Three-body decays of K0 mesons
We have measured the time distributions of the π+e-ν̅, π-e+ν, and π+π-π0 modes from initially pure K0's in a spark-chamber experiment performed at the Bevatron. From 1079 Ke3 events between 0.2 and 7 KS lifetimes, we find ReX=-0.070±0.036, ImX=0.107-0.074+0.092. This result is consistent with X=0 (relative probability = 0.25). From 148 K→π+π-π0 events in the same fiducial volume, we get ReW=-0.05±0.17 and ImW=0.39-0.37+0.35. ("W" is variously known as η+-0 and x+iy.) Our results are consistent with W=0 (relative probability = 0.30).
©1973 The American Physical Society. Received 9 June 1972. Work supported in part by the U.S. Atomic Energy Commission. Prepared under Contract No. AT(11-1)-68 for the San Francisco Operations Office. [J.D.G.] Work supported in part by National University of Ireland Traveling Studentship. We wish to thank the Bevatron operations staff and members of the Lofgren group at the Lawrence Radiation Laboratory at Berkeley for invaluable assistance during the preparation and operation of this experiment at the Bevatron. We gratefully acknowledge the contributions of A. Lake, D. Sell, W. Friedler, H. Grau, S. Sedleniek, and D. Toomer to the design and construction of equipment. D. Chu, P. Walden, K. Young, G. Murata, and J. Stanley assisted in the setup and running stages of the experiment. C. Lam, D. Molodowitch, J. Tam, and L. Young assisted materially in the data analysis. Finally, we acknowledge the skill and perseverance of the scanning and measuring staff under J. Ferrari, including J. Edwards, M. Jolliff, M. Jordan, J. Lyon, and G. Martin.