Determination of the Fundamental Parameters of the K^{0}-K[over ]^{0} System in the Energy Range 30-110 GeV

Vol. I, p. 1971; B. Cowsik and J. McClelland, Phys. Bev. Lett. 29, 669 (1972); Ap. J. 180, 7 (1973)l, or heavier than about 2 GeV (see Ref. 7) and lighter than the temperature of the universe after the gravitinos decay. The last proviso is added here to guarantee that the gauge fermions have time to annihilate; Eq. (4) shows that it can be satisfied only if ~E & 10 ( QeV. This proviso can be somewhat relaxed if the gaugefermion mass is larger than a few gigaelectronvolts. A more thorough discussion of gauge-fermion annihilation in a specific model is given by S. Dimopoulos and S. Baby, to be published. J. C. Pati and A. Salam, Phys. Bev. Lett. 31, 661 (1973), and Phys. Rev. D 8, 1240 (1973), and 10, 275 (1974), etc. H. Georgi, in I'articles and Fields —l974, edited by C. A. Carlson, A.I.P. Conference Proceedings No. 23 (American Institute of Physics, New York, 1975); H. Fritsch and P. Minkowski, Ann. Phys. (N.Y.) 93, 193 (1975). These temperatures are low enough that we can ignore the explicit breaking of supersymmetry by finite temperature effects, discussed by A. Das and M. Kaku, Phys. Rev. D 18, 4540 {1978); L. Girardello, M. T. Qrisaru, and P. Salomonson, Nucl. Phys. 8178, 331 (1981). '