Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-11-06
Physics
High Energy Physics
High Energy Physics - Phenomenology
Talk given in "Light-Cone Workshop: Hadrons and Beyond, LC03, Grey College, University of Durham, Durham, 5-9 August, 2003. 4
Scientific paper
The violation of the rotational symmetry constraint of the matrix elements of the plus component of the vector current, in the Drell-Yan frame, is studied using an analytical and covariant model of spin-1 composite particle. The contributions from pair terms or zero modes, if missed cause the violation of the rotational symmetry. We reanalyze the prescription by Grach and Kondratyuk to extract form factors which can eliminate theses contributions in particular models.
de Melo P. B. C. J.
Frederico Tobias
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