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Measurement Of Transparency Ratios For Protons From Short-Range Correlated Pairs, Clas Collaboration, L. B. Weinstein, K. P. Adhikari, M. J. Amaryan, H. Baghdasaryan, G. E. Dodge, C. E. Hyde, S. E. Kuhn, M. Mayer, H. Seradaryan

Physics Faculty Publications

Nuclear transparency, T_p(A), is a measure of the average probability for a struck proton to escape the nucleus without significant re-interaction. Previously, nuclear transparencies were extracted for quasi-elastic A(e,e′p) knockout of protons with momentum below the Fermi momentum, where the spectral functions are well known. In this Letter we extract a novel observable, the transparency ratio, T_p(A)/T_p(¹²C), for knockout of high-missing-momentum protons from the breakup of short-range correlated pairs (2N-SRC) in Al, Fe and Pb nuclei relative to C. The ratios were measured at momentum transfer Q² ⩾1.5(GeV/c)² and x …