Annihilation contributions in a Wilson-loop formalism.
نویسنده
چکیده
The neglected annihilation contributions in the Wilson loop formalism of Eichten and Feinberg are defined and calculated. An annihilation time scale is introduced to discriminate the glueball contributions from true annihilation contributions to isoscalar-pseudoscalar meson states. In this formalism, it is found that there is no mixing between two quarkonium states with different quark masses through annihilation diagram. In a fixed state the annihilation contributions oscillate as functions of the annihilation time scale, and so provide a possible mechanism to shift the mass of 7 upward, instead of downward as in the QED case.
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ورودعنوان ژورنال:
- Physical review. D, Particles and fields
دوره 40 4 شماره
صفحات -
تاریخ انتشار 1989