arXiv:hep-ph/0103004·v1·High Energy Physics — Phenomenology
On a possible manifestation of f_1 trajectory in J/psi photoproduction
Dayeeta Roy (1) · Toshiyuki Morii (2)and Alexander I. Titov (3) ((1) (2)Kobe University (3) Bogolyubov Laboratory of Theoretical Physics, Russia)
Abstract
We analyze a possible manifestation of f_1-trajectory in elastic J/psi photoproduction at high energy and large momentum transfer. Inspite of the small contribution of f_1-trajectory in total cross sections, it becomes significant in various spin observables. In particular, we show that the crucial test for f_1-exchange can be made by measuring the single beam- and double parity- and beam-target asymmetries at large momentum transfers, where a strong deviation from the exchange of conventional Pomerons is expected. This effect is caused by the interference of natural (Pomeron) and unnatural (f_1) parity exchange parts of amplitude in the region where their contributions become comparable to each other and might be interesting to observe in forthcoming experiments, if feasible. .
Comments: 8 pages, 10 figures. To be published in PLB