Search for ΔS = 2 nonleptonic hyperon decays

• Published in: Physical review letters Vol. 94; no. 10
• Main Authors: WHITE, C. G, BURNSTEIN, R. A, GIDAL, G, GU, P, GUSTAFSON, H. R, HO, C, HOLMSTROM, T, HUANG, M, JAMES, C, JENKINS, C. M, KAPLAN, D. M, LEDERMAN, L. M, CHAKRAVORTY, A, LEROS, N, LONGO, M. J, LOPEZ, F, LU, L. C, LUEBKE, W, LUK, K. B, NELSON, K. S, PARK, H. K, PERROUD, J.-P, RAJARAM, D, CHAN, A, RUBIN, H. A, TENG, P. K, VOLK, J, WHITE, S. L, ZYLA, P, CHEN, Y. C, CHOONG, W. S, CLARK, K, DUKES, E. C, DURANDET, C, FELIX, J
• Format: Journal Article
• Language: English
• Published: Ridge, NY American Physical Society 18-03-2005
• Subjects: DECAY; Decays of baryons; Exact sciences and technology; Experiment-HEP; FERMILAB; HYPERONS; Physics; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Specific reactions and phenomenology; The physics of elementary particles and fields; Baryon decay; Hyperon reactions
• ISSN: 0031-9007; 1079-7114
• DOI: 10.1103/PhysRevLett.94.101804

A sensitive search for the rare decays {Omega}{sup -} {yields} {Lambda}{pi}{sup -} and {Xi}{sup 0} {yields} p{pi}{sup -} has been performed using data from the 1997 run of the HyperCP (Fermilab E871) experiment. Limits on other such processes do not exclude the possibility of observable rates for |{Delta}S| = 2 nonleptonic hyperon decays, provided the decays occur through parity-odd operators. They obtain the branching-fraction limits {Beta}({Omega}{sup -} {yields} {Lambda}{pi}{sup -}) < 2.9 x 10{sup -6} and {Beta}({Xi}{sup 0} {yields} p{pi}{sup -}) < 8.2 x 10{sup -6}, both at 90% confidence level.