Prefer a chat interface with context about you and your work?
The <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:mi>B</mml:mi><mml:mo>→</mml:mo><mml:mi>K</mml:mi><mml:mi>π</mml:mi></mml:math> puzzle and supersymmetric models