The ratios of inclusive electron scattering cross sections of 4He, 12C, and 56Fe to 3He have been measured at 11.4 GeV2, the ratios exhibit two separate plateaus, at 1.52.25. 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, 3.1, and 4.4 times larger for A=4, 12, and 56. This is the first measurement of 3-nucleon SRC probabilities in nuclei.
Physical Review Letters
Egiyan, K. S.; Biselli, Angela; and CLAS Collaboration, "Measurement of 2- and 3-Nucleon Short
Range Correlation Probabilities in Nuclei" (2006). Physics Faculty Publications. 82.
K. S. Egiyan et al. [CLAS Collaboration], "Measurement of 2- and 3-Nucleon Short Range Correlation Probabilities in Nuclei", Phys. Rev. Lett. 96, 082501 (2006) DOI: 10.1103/PhysRevLett.96.082501