References

(a)

Present address: Rutgers U., Piscataway, NJ 08855.

(b)

Present address: B.N.L., Upton, NY 11973.

(c)

Present address: Cornell U. 14853.

(d)

Deceased.

(e)

Present address: U. of Penn., Philadelphia, PA 19104.

(f)

Present address: Caltech, Pasadena CA 91125.

(g)

Present address: R.P.I., Troy, NY 12180.

(h)

Present address: U. of New Mexico, Albuquerque, NM 87131.

0.2in

1

R.L. Jaffe, Phys. Rev. Lett. 38, 195 (1977).

2

A.P. Balachandran, F. Lizzi, V.G.J. Rodgers, and A. Stern, Phys. Rev. Lett. 52, 887 (1984); E. Golowich and T. Sotirelis, Phys. Rev. D46, 354 (1992); P.B. Mackenzie and H.B. Thacker, Phys. Rev. Lett. 55, 2539 (1985).

3

J.F. Donoghue, E. Golowich, and B.R. Holstein, Phys. Rev. D34, 3434 (1986).

4

H. R. Gustafson et al., Phys. Rev. Lett. 37, 474 (1976); A. S. Carroll et al., Phys. Rev. Lett., 41, 777 (1978); S. Aoki et al., Phys. Rev. Lett. 65, 1729 (1990); H. Ejiri et al., Phys. Lett. 228B, 24 (1989); A candidate for a short-lived H was claimed by: B.A. Shahbazian et al., Z. Phys. C39, 151 (1988); and A.N. Alekseev et al., Yad. Fiz. 52, 1612 (1990).

5

J. Belz et al., submitted to Phys. Rev. Lett.

6

A.P. Heinson et al., Phys. Rev. D51, 985 (1995).

7

J. Klein and R. Cousins, UCLA-HEP-94-001 (revised), submitted to Phys. Rev. D.

8

F. Abe et al., Phys. Rev. D30, 1861 (1984); F. Abe et al., Phys. Rev. D36, 1302 (1987).

9

B. Cole et al., Phys. Lett. B 350, 147 (1995).

10

L. Montanet et al. (Particle Data Group), Phys. Rev. D50, 1241 (1994).

11

F. Rotondo, Phys. Rev. D47, 3871 (1993).