Pion-pion Scattering with Elongated Boxes
Abstract
Pion-pion scattering offers an important benchmark for a lattice QCD study of hadron-hadron interactions. Scattering can happen in one of three isospin channels, each having distinct properties. The attractive I = 0 and I = 1 channels are dominated by the broad σ and narrow ρ resonances, respectively, while the I = 2 channel has no low energy resonance. Our group has calculated the σ and ρ resonance properties using elongated boxes to scan the relevant kinematic region at two pion masses. Here we present new results for the isospin-2 channel, thus completing the full study of ππ scattering. In addition, we establish a link to the physical point of all three channels simultaneously using the Inverse Amplitude Method.
- Publication:
-
APS Division of Nuclear Physics Meeting Abstracts
- Pub Date:
- 2019
- Bibcode:
- 2019APS..DNP.ME007C