| Página principal > A measurement of the lifetimes of Xi /sup 0/ and Lambda hyperons |
| Article | |
| Title | A measurement of the lifetimes of Xi /sup 0/ and Lambda hyperons |
| Author(s) | Zech, G ; Dydak, F ; Geweniger, C ; Kleinknecht, K ; Navarria, Francesco Luigi ; Overseth, O E ; Steffen, P ; Taureg, H ; Wahl, H ; Williams, E G H |
| Affiliation | (Fachbereich Phys, Gesamthochschule Siegen, Siegen, West Germany) |
| Publication | 1977 |
| In: | Nucl. Phys. B 124 (1977) 413-25 |
| DOI | 10.1016/0550-3213(77)90414-X |
| Subject category | Particle Physics - Phenomenology |
| Free keywords | CERN PS |
| Abstract | The mean lifetimes of the Lambda and Xi /sup 0/ hyperons have been measured in a short neutral beam at the CERN Proton Synchrotron. Lambda and Xi /sup 0/ decays have been identified by measuring their decay products in a magnetic spectrometer and in a lead glass hodoscope. The experimental results, based on 53000 Lambda decays and 6300 Xi /sup 0/ decays, are tau /sub Lambda /=(2.69+or-0.03)*10/sup -10/ s, tau /sub Xi /0=(2.77+or-0.16)*10/sup -10/ s-( tau /sub Lambda /-2.69*10/sup -10/ s). From the result for tau /sub Xi /0 together with existing data on tau /sub Xi /- a violation is obtained of the Delta I=/sup 1///sub 2/ rule in non-leptonic Xi decays. (11 refs). |