https://doi.org/10.1051/epjconf/201713706026
pNRQCD determination of E1 radiative transitions
Physik-Department, Technische Universität München, James-Franck-Str. 1, D-85748 Garching, Germany
a e-mail: sebastian.steinbeisser@tum.de
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
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
