Search

At the same time, detectors placed at large backward angles from the momentum transfer will measure the correlated spectator nucleon, whose momentum, p SB s sb , is equal and opposite to the initial momentum of the struck nucleon p SB i sb = -p SB s sb . The results [[1]] indicate that, while the fraction of high-momentum neutrons saturates or slightly decreases with increasing N/Z, the fraction of high-momentum protons grows approximately linearly with N/Z. This supports the scenario where outer shell neutrons form pn-SRC pairs, increasing the average proton kinetic energy. Atomic nuclei are made of strongly interacting protons and neutrons (nucleons), which are themselves made of quarks and gluons (partons). At intermediate relative momenta (300 MeV/c < p SB miss sb < 600 MeV/c) the NN interaction is dominated by the iterative two-pion exchange part of the tensor interaction [[22]], which couples to spin-1 pn pairs, but not to spin-0 proton-proton (pp) or neutron-neutron (nn) pairs. [Extracted from the article]