Speaker
Description
Understanding the modification of quarks in nucleons within nuclei (EMC effect) is a longstanding open question in nuclear physics. Recent experimental results from electron scattering at Jefferson Lab strengthen the correlation between the EMC effect and short- range correlated pairs (SRC) of nucleons in nuclei. That means that the EMC effect is probably driven by the high-momentum highly-virtual nucleons of the SRC pairs. This connection can be tested experimentally by measuring electron deep inelastic scattering from a nucleon and detecting its correlated SRC partner nucleon (tagging). This allows us to measure the quark modification of high-momentum nucleons.
Two tagged experiments on deuterium are underway at Jefferson Lab of which one already took data and the other will take data next year.
In my talk, I will present the current knowledge of the EMC-SRC correlation, and present preliminary results from the tagged experiment on deuterium at Jefferson Lab's experimental HallB where the modification of protons were measured by tagging the recoiling neutrons.
