Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Particle dissociation on a composite target

Journal Article · · Phys. Rev., D; (United States)
We discuss the Drell-Hiida-Deck (DHD) mechanism for particle dissociation on a composite target. Working in an approximation scheme of the eikonal type (linearized propagators), terms describing interaction with more than one target nucleon are easily included. Several interesting features emerge. Due to cancellations, the only important diagrams are those describing dissociation before the target is encountered. Disregarding cancellations, internal production vanishes like the longitudinal momentum transfer. There is thus no intranuclear cascading at high rapidities. A careful analysis of the rescattering terms for the coherent process Nd ..-->.. (N..pi..) d reveals that the target is much more transparent than one would naively think (sigma/sub 2/ = sigma/sub N/N + sigma/sub piN/), though not as transparent as indicated by experiments. This suggests that the DHD mechanism is not the dominant mechanism for exclusive particle production on nuclei at high energies.
Research Organization:
Lyman Laboratory of Physics, Harvard University, Cambridge, Massachusetts 02138
OSTI ID:
6150008
Journal Information:
Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 19:11; ISSN PRVDA
Country of Publication:
United States
Language:
English