On the significance of radiative corrections on measurements of the EMC effect
arxiv(2024)
摘要
Analyzing global data on the EMC effect, which denotes differences in parton
distribution functions in nuclei compared to unbound nucleons, reveals
tensions. Precise measurements at Jefferson Lab, studying both x and A
dependence, show systematic discrepancies among experiments, making the
extraction of the A dependence of the EMC effect sensitive to the selection of
datasets. By comparing various methods and assumptions used to calculate
radiative corrections, we have identified differences that, while not large,
significantly impact the EMC ratios and show that using a consistent radiative
correction procedure resolves this discrepancy, leading to a more coherent
global picture, and allowing for a more robust extraction of the EMC effect for
infinite nuclear matter.
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