Determining the strong phase of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>a</mml:mi><mml:mn>1</mml:mn></mml:msub></mml:math> meson decay amplitude using the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>W</mml:mi><mml:mo stretchy="false">→</mml:mo><mml:mi>ν</mml:mi><mml:mi>τ</mml:mi><mml:mo mathvariant="bold" stretchy="false">(</mml:mo><mml:mo form="prefix" stretchy="false">→</mml:mo><mml:mi>ν</mml:mi><mml…
Physical review. D/Physical review. D.