Roy, D. P. ; Chu, Shu-Yuan (1968) Pion conspiracy and pion residue from the finite-energy photoproduction sum rule Physical Review, 171 (5). pp. 1762-1763. ISSN 0031-899X
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Official URL: http://prola.aps.org/abstract/PR/v171/i5/p1762_1
Related URL: http://dx.doi.org/10.1103/PhysRev.171.1762
Abstract
The pion residue is obtained as an integral over the relevant photoproduction amplitude following the usual prescription of the finite-energy sum rule. The latter, studied as a function of t, reveals the following interesting features of the pion residue. It is nonzero at t=0 (thus showing pion conspiracy), but vanishes around -1.5μ2, as required by high-energy data. The magnitude of the residue at t=0 also agrees extremely well with that obtained from the high-energy forward photoproduction cross section.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 42813 |
| Deposited On: | 06 Jun 2011 13:12 |
| Last Modified: | 06 Jun 2011 13:12 |
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