Search for direct CP violation in nonleptonic decays of charged Xi and lambda hyperons

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.

Surgical Management of Giant Descending Aortic Thrombus Detected by Transesophageal Echocardiography.

With the advent of transesophageal echocardiography (TEE), giant thrombi of the descending aorta are becoming increasingly recognized as possible sources of peripheral emboli. This report describes the management of three patients presenting with multiple unexplained peripheral emboli. All three patients were treated successfully with aortic thrombectomy and long-term anticoagulation.