Subthreshold K+ production in deuteron and alpha induced nuclear reactions
Abstract
Double differential cross sections have been measured for pi+ and K+ emitted around midraidity in d+A and He+A collisions at a beam kinetic energy of 1.15 GeV/nucleon. The total pi+ yield increases by a factor of about 2 when using an alpha projectile instead of a deuteron whereas the K+ yield increases by a factor of about 4. According to transport calculations, the K+ enhancement depends both on the number of hadron-hadron collisions and on the energy available in those collisions: their center-of-mass energy increases with increasing number of projectile nucleons.
- Publication:
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arXiv e-prints
- Pub Date:
- September 1997
- DOI:
- 10.48550/arXiv.nucl-ex/9709002
- arXiv:
- arXiv:nucl-ex/9709002
- Bibcode:
- 1997nucl.ex...9002D
- Keywords:
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- Nuclear Experiment