Implications of unequal-mass kinematics for the Regge-pole model of vector-meson production
- Creators
- Jones, Lorella
Abstract
Application of the Regge-pole model to vector-meson production by incident pseudoscalars is reexamined in the light of recent theoretical advances in the treatment of unequal-mass processes. It is found that in the absence of conspiracy between trajectories at t=0, the kinematic factors separated from the helicity amplitudes before Reggeization tend to suppress the effects of parity = (-1)^J exchanges relative to parity = (-1)^(J+1) contributions, in the region |t|≤0.2 GeV^2. This helps account for the experimental observation that, although απ is less than αA2,αω⋯, π exchange tends to dominate the forward peak wherever it is possible (production of ρ and K* mesons). This kinematic suppression also helps explain the failure of ρ exchange to dominate in ω production.
Additional Information
©1967 The American Physical Society. Received 24 April 1967. The author would like to thank Dr. Ling-Lie Wang for a number of helpful suggestions and for a critical reading of the manuscript; and Professor Steven Frautschi for advice and encouragement throughout the course of this work. Work supported in part by the U.S. Atomic Energy Commission. Prepared under Contract AT(11-1)-68 for the San Francisco Operations Office, U.S. Atomic Energy Commission. [L.J. was a] National Science Foundation Predoctoral Fellow.Files
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Additional details
- Eprint ID
- 7155
- Resolver ID
- CaltechAUTHORS:JONpr67b
- Created
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2007-01-11Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field