Measurement of 2- and 3-Nucleon Short Range Correlation Probabilities in Nuclei
K. S. Egiyan, N. B. Dashyan, M. M. Sargsian, M. I. Strikman, L. B. Weinstein, CLAS Collaboration
Abstract
The ratios of inclusive electron scattering cross sections of He4, C12 and Fe56 to He3 have been measured at 1 < xB < 3. At Q2 > 1.4 GeV2, the ratios exhibit two separate plateaus, at 1.5 < xB < 2 and at xB > 2.25. This pattern is predicted by models that include 2- and 3-nucleon short-range correlations (SRC). Relative to A=3, the per-nucleon probabilities of 3-nucleon SRC are 2.3, 3.2, and 4.6 times larger for A=4, 12 and 56. This is the first measurement of 3-nucleon SRC probabilities in nuclei. \\
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