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Implications of unequal-mass kinematics for the Regge-pole model of vector-meson production

Jones, Lorella (1967) Implications of unequal-mass kinematics for the Regge-pole model of vector-meson production. Physical Review, 163 (5). pp. 1523-1529. ISSN 0031-899X. doi:10.1103/PhysRev.163.1523.

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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.

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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.
Issue or Number:5
Record Number:CaltechAUTHORS:JONpr67b
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:7155
Deposited By: Tony Diaz
Deposited On:11 Jan 2007
Last Modified:08 Nov 2021 20:39

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