QUARK OFF-SHELLNESS IN K, Bgg DECAYS

[摘要] We demonstrate the importance of the quark off-shellness on examples of the radiativepseudoscalar meson decays, characterized by the simplest hadronic matrix elements. Wepoint out that roughly a quarter of the empirical K_Lggamplitude originates in the quark off-shellness in kaon. For B_Sgg we also find non-negligible contributions that increase thedecay rate by a factor of 1.5 to 3.

[学科分类] 物理（综合）