Shen, PNA (reprint author), Chinese Acad Sci, Inst High Energy Phys, POB 918 4, Beijing 100049, Peoples R China.
The Lambda-hypernucleus (LHN) production in the proton-induced reaction is studied in the distorted wave impulse approximation(DWIA). The cross sections for the LHN production in the reactions where the proton bombards the (6)L(i), (12)C and (16)O targets, respectively, are calculated. It is shown that the reaction cross sections are of the order of mu b, and the distortion effects tend to reduce the cross sections by a factor of 3 similar to 10. For the s(Lambda)-LHN production, the differential cross section is decreased with the increasing mass of the target nucleus. The p(Lambda)-LHN production cross section is normally higher than that for the s(Lambda)-LHN production. The double differential cross sections (DDXS) with respect to the momenta of the outgoing proton and kaon are also demonstrated. The missing mass spectra of the inclusive reaction p+ A -> p + K(+) + X for the (6)Li, (12)C and (16)O targets, an alternative way to study hypernuclear physics, are proposed. From these spectra, the masses of LHN can accurately be extracted. Moreover, the exotic LHN production in the same type of reaction is also studied. The same physical quantities are calculated. it is shown that the magnitude of the cross section is also in the order of mu b. The halo effect of the core nucleus that locates at a place far away from the stable line would make the wave function broader, and consequently reduces the production cross section.