QCD sum-rules analysis of vector ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mn>1</mml:mn><mml:mrow><mml:mo>−</mml:mo><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:math> ) heavy quarkonium meson-hybrid mixing
Physical review. D/Physical review. D.