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Elastic scattering, polarization and absorption of relativistic antiprotons on nuclei
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abstract
We perform Glauber model calculations of the antiproton-nucleus elastic and quasielastic scattering and absorption in the beam momentum range $\sim 0.5\div10$ GeV/c. A good agreement of our calculations with available LEAR data and with earlier Glauber model studies of the $\bar p A$ elastic scattering allows us to make predictions at the beam momenta of $\sim 10$ GeV/c, i.e. at the regime of the PANDA experiment at FAIR. The comparison with the proton-nucleus elastic scattering cross sections shows that the diffractive minima are much deeper in the $\bar p A$ case due to smaller absolute value of the ratio of the real-to-imaginary part of the elementary elastic amplitude. Significant polarization signal for $\bar p A$ elastic scattering at 10 GeV/c is expected. We have also revealed a strong dependence of the $\bar p A$ absorption cross section on the slope parameter of the transverse momentum dependence of the elementary $\bar pN$ amplitude. The $\bar p A$ optical potential is discussed.
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Cited by 1 Pith paper
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Color transparency in $\bar p d \to \pi^- \pi^0 p$ reaction
A model calculation predicts that color transparency strongly modifies the nuclear transparency ratio in \bar p d -> pi- pi0 p and that PANDA can observe this with modest statistics.
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