A New Measurement of the Energy Dependence of Nuclear Transparency for Large Momentum Transfer 12C(p,2p) Scattering

E850 Collaboration; A. Leksanov; J. Alster; G. Asryan; Y. Averichev; D. Barton; V. Baturin; N. Bukhtoyarova; A. Carroll; S. Heppelmann; T. Kawabata; Y. Makdisi; A. Malki; E. Minina; I. Navon; H. Nicholson; A. Ogawa; Yu. Panebratsev; E. Piasetzky; A. Schetkovsky; S. Shimanskiy; A. Tang; J. W. Watson; H. Yoshida; D. Zhalov

doi:10.1063/1.1345262

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A New Measurement of the Energy Dependence of Nuclear Transparency for Large Momentum Transfer 12C(p,2p) Scattering

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Abstract

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.

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E850 Collaboration, A. Leksanov, J. Alster, G. Asryan, Y. Averichev, D. Barton, V. Baturin, N. Bukhtoyarova, A. Carroll, S. Heppelmann, T. Kawabata, Y. Makdisi, A. Malki, E. Minina, I. Navon, H. Nicholson, A. Ogawa, Yu. Panebratsev, E. Piasetzky, A. Schetkovsky, S. Shimanskiy, A. Tang, J. W. Watson, H. Yoshida, D. Zhalov. 2000-09-08. A New Measurement of the Energy Dependence of Nuclear Transparency for Large Momentum Transfer 12C(p,2p) Scattering. https://doi.org/10.1063/1.1345262

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