“K−pp”, a <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:mover accent="true"><mml:mrow><mml:mi>K</mml:mi></mml:mrow><mml:mo>‾</mml:mo></mml:mover></mml:math>-meson nuclear bound state, observed in 3He(K−,Λp)n reactions
Physics letters. B