A New Measurement of the Energy Dependence of Nuclear Transparency for   Large Momentum Transfer 12C(p,2p) Scattering
  We present a new measurement of the energy dependence of nuclear transparency from AGS experiment E850, performed using the EVA solenoidal spectrometer, upgraded since 1995. Using a secondary beam from the AGS accelerator, we simultaneously measured $pp$ elastic scattering from hydrogen and $(p,2p)$ quasi-elastic scattering in carbon at incoming momenta of 5.9, 8.0, 9.0, 11.7 and 14.4 GeV/c. This incident momentum range corresponds to a $Q^{2}$ region between 4.8 and 12.7 (GeV/c)$^{2}$. The detector allowed us to do a complete kinematic analysis for the center-of-mass polar angles in the range $85^{\circ}-90^{\circ}$. We report on the measured variation of the nuclear transparency with energy and compare the new results with previous measurements. 
E850 Collaboration: A. Leksanov, J. Alster, G. Asryan, Y. Averichev,   D. Barton, V. Baturin, N. Bukhtoyarova, A. Carroll, S...