Two-proton correlations at small relative momentum q were studied in the eA(3He,4He,C,Fe)→e′ppX reaction at E0=4.46 GeV using the CLAS detector at Jefferson Lab. The enhancement of the correlation function at small q was found to be in accordance with theoretical expectations. Sizes of the emission region were extracted, and proved to be dependent on A and on the proton momentum. The size of the two-proton emission region for He was measured in eA reactions for the first time.
Physical Review Letters
Stavinsky, A. V.; Biselli, Angela; and CLAS Collaboration, "Proton Source Size Measurements in the eA→e′ppX Reaction" (2004). Physics Faculty Publications. 90.
A. V. Stavinsky et al. [CLAS Collaboration], "Proton Source Size Measurements in the eA→e′ppX Reaction", Physical Review Letters 93.19 (2004) DOI: 10.1103/PhysRevLett.93.192301