New Results on the $π^{+}π^{-}$ Electroproduction Cross Sections off Protons

Details New Results on the $π^{+}π^{-}$ Electroproduction Cross Sections off Protons New Results on the $π^{+}π^{-}$ Electroproduction Cross Sections off Protons

2011-08-24

arxiv.org/abs/1108.4922v2

Physics

Nuclear Physics

Nuclear Experiment

Will be published in proceedings of NSTAR 2011 conference. 4 pages, 4 figures

Scientific paper

In these proceedings we present preliminary $\pi^{+}\pi^{-}$ electroproduction cross sections off protons in the kinematical area of 1.4 GeV $< W <$ 1.8 GeV and 0.4 GeV$^{2}$ $< Q^{2} < 1.1$ GeV$^{2}$. Our results extend the kinematical coverage for this exclusive channel with respect to previous measurements. Furthermore, the $\pi^{+}\pi^{-}$ electroproduction cross sections were obtained for $Q^2$-bins of much smaller size. The future analysis of this data within the framework of the JLAB-MSU reaction model (JM) will considerably improve our knowledge on the $Q^2$ evolution of the transition $\gamma_{v}NN^*$ electrocouplings, in particular for the resonances with masses above 1.6 GeV.

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