Search for Direct CP Violation in Nonleptonic Decays of Charged {Xi} and {Lambda} Hyperons
/ Authors
K. Luk, H. Diehl, H. Diehl, J. Duryea, J. Duryea, G. Guglielmo, G. Guglielmo, K. Heller, P. Ho, C. James
and 8 more authors
K. Johns, K. Johns, M. Longo, R. Rameika, S. Teige, S. Teige, G. Thomson, Y. Zou
/ Abstract
A search for direct CP violation in the nonleptonic decays of hyperons has been performed. In comparing the product of the decay parameters, alpha(Xi)alpha(Lambda), in terms of an asymmetry parameter, A(XiLambda), between hyperons and antihyperons in the charged Xi-->Lambdapi and Lambda-->ppi decay sequence, we found no evidence of direct CP violation. The parameter A(XiLambda) was measured to be 0.012+/-0.014.
Journal: Physical Review Letters