New results on the π+π− electroproduction cross sections off protons

Abstract

Abstract. In these proceedings we present preliminary π + π − 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 π + π − 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 γ v NN * electrocouplings, in particular for the resonances with masses above 1.6 GeV.

New results from the studies of theN(1440)1/2+, N(1520)3/2Mokeev1, Burkert2, Carman3 et al. 2016Phys. Rev. CSelf Cite935910View full textAdd to dashboardCite

“…Further experimental data are needed in order to establish the nature of this state. In the near term future, new CLAS results on the ∆(1620)1/2 − electrocouplings are expected at photon virtualities from 0.3 GeV 2 to 1.0 GeV 2 with a much finer Q 2 -binning [76]. The results on the ∆(1620)1/2 − electrocouplings from CLAS data on charged double-pion electroproduction off the proton eventually will also be extended in Q 2 up to 5.0 GeV 2 .…”