Measurement of the polarization of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:msup><mml:mi>Ξ</mml:mi><mml:mn>0</mml:mn></mml:msup></mml:math> (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si2.gif" overflow="scroll"><mml:mover accent="true"><mml:msup><mml:mi>Ξ</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:mo>¯</mml:mo></mml:mover></mml:math>) hyperon beam by the NA48/1 experiment
Physics letters. B