pNRQCD determination of E1 radiative transitions
Physik-Department, Technische Universität München, James-Franck-Str. 1, D-85748 Garching, Germany
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Published online: 22 March 2017
This contribution contains the first numerical computation of the complete set of relativistic corrections of relative order v2 for electric dipole (E1) transitions in heavy quarkonium; in particular, for the processes χbj(1P) → ϒ(1S) + γ with J = 0, 1, 2. We assume that the momentum transfer of the heavy mesons involved in the reactions lies in the weak-coupling regime of the low-energy effective field theory potential non-relativistic QCD (pNRQCD) and thus a full perturbative calculation can be performed.
© The Authors, published by EDP Sciences, 2017
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