Empirical transverse charge densities in the nucleon-to-P11(1440) transition

Details Empirical transverse charge densities in the nucleon-to-P11(1440) transition Empirical transverse charge densities in the nucleon-to-P11(1440) transition

2008-11-14

arxiv.org/abs/0811.2285v1

Phys.Lett.B672:344-348,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 5 figures

Scientific paper

10.1016/j.physletb.2009.01.048

Using recent experimental data, we analyze the electromagnetic transition from the nucleon to the P11(1440) resonance. From the resulting empirical transition form factors, we map out the quark transverse charge densities which induce the N to 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.

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