Speaker
Description
We derive an analytical expression for the chromopolarizability of bottomonium states using the framework of potential nonrelativistic QCD. Next, using the QCD trace anomaly we obtain the two-pion production amplitude for the chromopolarizability operator and match the result to a chiral effective field theory for bottomonium states and pions as degrees of freedom. In this chiral effective field theory we compute long-range properties of bottomonium states such as the leading chiral logarithm correction to the mass of the 1S bottomonium and derive the van der Waals potential between two bottomonium states. Finally, we discuss the perspectives of using the developed chiral effective theory to evaluate two-pion decay amplitudes of bottomonium states.
Summary
We derive an analytical expression for the chromopolarizability of bottomonium states using the framework of potential nonrelativistic QCD. Next, using the QCD trace anomaly we obtain the two-pion production amplitude for the chromopolarizability operator and match the result to a chiral effective field theory for bottomonium states and pions as degrees of freedom. In this chiral effective field theory we compute long-range properties of bottomonium states such as the leading chiral logarithm correction to the mass of the 1S bottomonium and derive the van der Waals potential between two bottomonium states. Finally, we discuss the perspectives of using the developed chiral effective theory to evaluate two-pion decay amplitudes of bottomonium states.
