Investigation of the high momentum component of nuclear wave function using hard quasielastic A(p,2p)X reactions

Details Investigation of the high momentum component of nuclear wave function using hard quasielastic A(p,2p)X reactions Investigation of the high momentum component of nuclear wave function using hard quasielastic A(p,2p)X reactions

2002-03-13

arxiv.org/abs/nucl-th/0203028v1

Phys.Rev. C66 (2002) 024601

Physics

Nuclear Physics

Nuclear Theory

30 pages LaTex file and 19 eps figures

Scientific paper

10.1103/PhysRevC.66.024601

We present theoretical analysis of the first data on the high energy and momentum transfer (hard) quasielastic $C(p,2p)X$ reactions. The cross section of hard $A(p,2p)X$ reaction is calculated within the light-cone impulse approximation based on two-nucleon correlation model for the high-momentum component of the nuclear wave function. The nuclear effects due to modification of the bound nucleon structure, soft nucleon-nucleon reinteraction in the initial and final states of the reaction with and without color coherence have been considered. The calculations including these nuclear effects show that the distribution of the bound proton light-cone momentum fraction $(\alpha)$ shifts towards small values ($\alpha < 1$), effect which was previously derived only within plane wave impulse approximation. This shift is very sensitive to the strength of the short range correlations in nuclei. Also calculated is an excess of the total longitudinal momentum of outgoing protons. The calculations are compared with data on the $C(p,2p)X$ reaction obtained from the EVA/AGS experiment at Brookhaven National Laboratory. These data show $\alpha$-shift in agreement with the calculations. The comparison allows also to single out the contribution from short-range nucleon correlations. The obtained strength of the correlations is in agreement with the values previously obtained from electroproduction reactions on nuclei.

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