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arXiv · 1701.02513

pNRQCD determination of E1 radiative transitions

Sebastian Steinbeißer·Jorge Segovia
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Abstract

This contribution contains the first numerical computation of the complete set of relativistic corrections of relative order $v^{2}$ for electric dipole (E1) transitions in heavy quarkonium; in particular, for the processes $χ_{bJ}(1P) \to Υ(1S) + γ$ 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.

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Sebastian Steinbeißer, Jorge Segovia. 2017-01-10. pNRQCD determination of E1 radiative transitions. https://doi.org/10.1051/epjconf%2F201713706026

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