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arXiv · 1506.00871

Measurement of the EMC Effect in the Deuteron

K. A. Griffioen·J. Arrington·M. E. Christy·R. Ent·N. Kalantarians·C. E. Keppel·S. E. Kuhn·W. Melnitchouk·G. Niculescu·I. Niculescu·S. Tkachenko·J. Zhang
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Abstract

We have determined the structure function ratio $R^d_{\rm EMC}=F_2^d/(F_2^n+F_2^p)$ from recently published $F_2^n/F_2^d$ data taken by the BONuS experiment using CLAS at Jefferson Lab. This ratio deviates from unity, with a slope $dR_{\rm EMC}^{d}/dx= -0.10\pm 0.05$ in the range of Bjorken $x$ from 0.35 to 0.7, for invariant mass $W>1.4$ GeV and $Q^2>1$ GeV$^2$. The observed EMC effect for these kinematics is consistent with conventional nuclear physics models that include off-shell corrections, as well as with empirical analyses that find the EMC effect proportional to the probability of short-range nucleon-nucleon correlations.

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K. A. Griffioen, J. Arrington, M. E. Christy, R. Ent, N. Kalantarians, C. E. Keppel, S. E. Kuhn, W. Melnitchouk, G. Niculescu, I. Niculescu, S. Tkachenko, J. Zhang. 2015-06-29. Measurement of the EMC Effect in the Deuteron. https://doi.org/10.1103/physrevc.92.015211

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