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More about excited bottomonium radiative decays

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 نشر من قبل Randy Lewis
 تاريخ النشر 2012
  مجال البحث
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Radiative decays of bottomonium are revisited, focusing on contributions from higher-order relativistic effects. The leading relativistic correction to the magnetic spin-flip operator at the photon vertex is found to be particularly important. The combination of O(v^6) effects in the nonrelativistic QCD action and in the transition operator moves previous lattice results for excited Upsilon decays into agreement with experiment.



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