New deep inelastic scattering experiments measure two mirror nuclei

Scientists are holding up a “mirror” to protons and neutrons to learn more about the particles that build our visible universe. The MARATHON experiment, carried out at the U.S. Department of Energy’s Thomas Jefferson National Accelerator Facility, has accessed new details about these particles’ structures by comparing the so-called mirror nuclei, helium-3 and triton. The results were recently published in Physical Review Letters.