Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8199999 | Physics Letters B | 2006 | 7 Pages |
Abstract
The interference term between s- and t-pole contributions to the p(e,eâ²Ï+)n cross section is evaluated on the basis of the constituent quark model. It is shown that the contribution of baryon s-poles can be modeled by a nonlocal extension of the Kroll-Ruderman contact term. This contribution is in a destructive interference with the pion t-pole that is essential to improve the description of recent JLab data at the invariant mass W=1.95GeV. Some predictions are made for a new JLab measurement at higher values W=2.1-2.3GeV and Q2 centered at 1.6 and 2.45GeV2/c2.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
I.T. Obukhovsky, D. Fedorov, Amand Faessler, Th. Gutsche, V.E. Lyubovitskij,