Short Range Correlations and the EMC Effect in Effective Field Theory

Abstract

We show that the empirical linear relation between the magnitude of the EMC effect in deep inelastic scattering on nuclei and the short range correlation scaling factor $a_2$ extracted from high-energy quasi-elastic scattering at $x\ge 1$ is a natural consequence of scale separation and derive the relationship using effective field theory. While the scaling factor $a_2$ is a ratio of nuclear matrix elements that individually depend on the calculational scheme, we show that the ratio is independent of this choice. We perform Green's function Monte Carlo calculations with both chiral and Argonne-Urbana potentials to verify this and determine the scaling factors for light nuclei. The resulting values for ${}^3$He and ${}^4$He are in good agreement with experimental values. We also present results for ${}^9$Be and ${}^{12}$C extracted from variational Monte Carlo calculations.

8 pages, 4 figures, including the Supplemental Material, PRL version

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