![Schematic diagrams showing possible quark propagation channels in pion-pion scattering relevant for the sigma meson.](https://www.olcf.ornl.gov/wp-content/uploads/2018/03/Edwards-2-1-1024x494.jpg)
Schematic diagrams showing possible quark propagation channels in pion-pion scattering relevant for the sigma meson. Often, researchers aim for a distant horizon with respect to their research goals. When they get there, they plot their course for the next far-off landmark. Throughout the 20th century, researchers tried to understand the…
![Eric Gedenk](https://www.olcf.ornl.gov/wp-content/uploads/Eric-Gedenk-100x100.jpg)
Eric GedenkJune 5, 2017