Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1852859 | Physics Letters B | 2009 | 5 Pages |
Abstract
Using recent experimental data, we analyze the electromagnetic transition from the nucleon to the P11(1440)P11(1440) resonance. From the resulting empirical transition form factors, we map out the quark transverse charge densities which induce the N→P11(1440)N→P11(1440) transition. It is found that the transition from the proton to its first radially excited state is dominated by up quarks in a central region of around 0.5 fm and by down quarks in an outer band which extends up to about 1 fm.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Lothar Tiator, Marc Vanderhaeghen,