A study of the lifetime and spin of Ω − produced in K −p interactions at 8.25 GeV/ c

• Published in: Physics letters. B Vol. 78; no. 2; pp. 342 - 346
• Main Authors: Baubillier, M., Bloodworth, I.J., Bossen, G.J., Burns, A., Carney, J.N., Corden, M.J., Cowan, C.A., Cox, G.F., De Lima, C.J., Dixon, D., Gavillet, Ph, Kinson, J.B., Knudson, K., Levy, F., McCann, H., MacDermott, M., Negus, P.J., Oh, B.H., Pratap, M., Quercigh, E., Rivoal, M., Scarr, J.M., Shiers, J.C., Smith, G.A., Teodoro, D., Villalobos Baillie, O., Votruba, M.F., Whitmore, J., Zitoun, R.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.01.1978; Elsevier
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/0370-2693(78)90036-9

Using the decay mode Ω − → Λ K − , we have obtained a measurement of the Ω − lifetime τ Ω = (0.80 ± 0.12 0.16) × 10 −10 s . The Ω − decay angular distribution is consistent with W( cos θ ∗) ∝ 1 + 3 cos 2θ ∗ . The probability of consistency with a flat distribution is ∼ 1 300 indicating J ≠ 1 2 .