Speaker
Description
A complete understanding of the QCD spectrum calls for a dynamical description of the nature of resonances, which can be nourished by the determination of the strength and features of the coupling between hadronic states and electroweak currents.
In order to utilize lattice QCD to calculate these, a formulation of analytic mappings that relate finite volume results to infinite volume amplitudes is required.
Currently, the ingredients to analyze finite volume matrix elements of two scalar hadrons and an external current insertion are on place.
In this talk I will describe the current progress towards the extension of this formalism to hadrons with non-trivial spin degrees of freedom.
I will present the main ingredients of our derivation, which are mainly related to the study of the finite volume version of the triangle loop, and an outlook for future calculations.
A case study of the significance of the finite-volume corrections will be presented for a deuteron-like state.
