QCD Factorization for<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">B</mml:mi><mml:mi /><mml:mo>→</mml:mo><mml:mi /><mml:mi mathvariant="italic">π</mml:mi><mml:mi mathvariant="italic">π</mml:mi></mml:math>Decays: Strong Phases and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">CP</mml:mi></mml:math>Violation in the Heavy Quark Limit
Physical Review Letters - Tập 83 Số 10 - Trang 1914-1917