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Antiproton Production in p+d Reaction at Subthreshold Energies

A. Hasegawa, Y. Iwasaki, K. Sakamoto, N. Noda, H. Kouno, M. Nakano

nucl-tharXiv:nucl-th/9803010

Abstract

An enhancement of antiprotons produced in p+d reaction in comparison with ones in p+p elementary reaction is investigated. In the neighborhood of subthreshold energy the enhancement is caused by the difference of available energies for antiproton production. The cross section in p+d reaction, on the other hand, becomes just twice of the one in elementary p+p reaction at the incident energy far from the threshold energy when non-nucleonic components in deuteron target are not considered.

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