Role of the Nuclear and Electromagnetic Interactions in the Coherent Dissociation of the Relativistic ${}^7$Li Nucleus into the ${}^3$H + ${}^4$He Channel

Abstract

The differential cross section in the transverse momentum $Q$ and a total cross section of $(31\pm 4)$ mb for the coherent dissociation of a 3-A-GeV/$c$ ${}^7$Li nucleus through the ${}^3$H${+}^4$He channel have been measured on emulsion nuclei. The observed $Q$ dependence of the cross section is explained by the predominant supposition of the nuclear diffraction patterns on light (C, N, O) and heavy (Br, Ag) emulsion nuclei. The contributions to the cross section from nuclear diffraction ($Q\le 400$ MeV/$c$) and Coulomb $(Q\le 50$ MeV/$c$) dissociations are calculated to be 40.7 and 4 mb, respectively.

arXiv commentISSN 0021-3640, Pleiades Publishing, Ltd., 2008

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