[Hybrid baryons] N--->Roper

[Viktor Mokeev]

  Dear Collegues,

 Please find interesting interpretation of the CLAS data on N-->N(1440)1/2+ transition electrocouplings within the framework of chiral Effective Field Theory with pion, rho, N, N(1440) as only degrees of freedom involved, while the interactions between quarks and gluons are absorbed into effective Low Energy Couplings.

 Successful description of the CLAS data on N--->N(1440)1/2- electrocoulings strongly suggest essential role of meson-baryon degrees of freedom in Roper structure at Q^2<0.5 GeV^2. Furthermore, this paper motivate extension of the coverage over Q^2 down to closest to the photon point values. Therefore, the paper may offer possibility for extension of our hybrid proposal by the studies of low W area at smallest possible Q^2.

   Best Regards,
                            Victor  
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 1402.0741.pdf
Type: application/pdf
Size: 347150 bytes
Desc: not available
Url : https://mailman.jlab.org/pipermail/hybrid_baryons/attachments/20150304/c1c89b3f/attachment-0001.pdf