https://doi.org/10.1140/epja/i2006-10072-2
Hadron Physics
μpGEp/GMp and qF2p/F1p in a relativistic quark model
1
Departamento de Fısica, Instituto Tecnológico de Aeronáutica, Centro Técnico Aeroespacial, 12.228-900, São José dos Campos, São Paulo, Brazil
2
Fachbereich Physik, Universität Rostock, 18051, Rostock, Germany
3
Department of Physics, University of Virginia, 22904, Charlottesville, VA, USA
* e-mail: tobias@ita.br
Received:
9
March
2006
Accepted:
20
July
2006
Published online:
25
August
2006
The possible zero of the proton electromagnetic form factor ratio G Ep/G Mp is studied within a light-front quark model. The position of the zero is determined by the presence of a hard constituent quark component in the nucleon wave function. The description of the data for the ratios μp G Ep/G Mp and qF 2p/F 1p is improved when the hard-scale component of the nucleon wave function is considered.
PACS: 12.39.-x Phenomenological quark models – / 13.40.-f Electromagnetic processes and properties – / 13.40.Gp Electromagnetic form factors – / 14.20.Dh Protons and neutrons –
© Società Italiana di Fisica and Springer-Verlag, 2006
