Speaker
Description
In this work we investigate the time-like pion form factor from lattice QCD, a quantity interesting for its physics content and its phenomenological reach. This observable can be calculated in the elastic region using the finite-volume approach, up to the first (four-particle) open channel. With the goal of accessing the exclusive two-pion form factor in the inelastic region, starting from a three-point correlator involving the vector current and two (temporally-displaced) pion interpolating operators, we examine the associated underlying spectral density and relate it to the form factor using recent developments based on inverse-problem techniques. The status of our preliminary calculation performed on RBC/UKQCD ensembles using domain-wall fermions is presented.
| Parallel Session (for talks only) | Hadronic and nuclear spectrum and interactions |
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