[Clas_hadron] Contrinuted talk for the Fall DNP Meeting

[Eugene Pasyuk]

Victor,

We should follow new naming convention for nucleon resonances: N(mass)spin^parity or \Delta(mass)spin^parity.

-Eugene

----- Original Message -----
> From: "Viktor Mokeev" <mokeev at jlab.org>
> To: "clas hadron" <clas_hadron at jlab.org>
> Sent: Tuesday, June 25, 2013 1:47:41 PM
> Subject: [Clas_hadron] Contrinuted talk for the Fall DNP Meeting
> 
> Dear Colleagues,
> 
>  Please find below the draft of my contributed talk for
>  Mini-Symposium 14e-"Advances in the exploration of the excited
>  nucleon spectrum and structure" at the Fall DNP Meeting. I
>  appreciate your comments. The deadline for submission is July 1st.
> 
>  Best Regards,
>                             Victor
> 
> 
> 
> --------------------------------------------------------------------
> 
> 
>                            Recent results in the studies of the
>                            high-lying nucleon resonances
>                            from the CLAS data on \pi^+\pi^-p
>                            electroproduction.
> 
>                                     V.D.Burkert, R.W.Gothe and
>                                     V.I.Mokeev for the CLAS
>                                     Collaboration.
> 
>                                 Jefferson Lab, University of South
>                                 Carolina, and Moscow State
>                                 University.
> 
> 
>   The exclusive double-pion electroproduction represents the primary
>   source of information on the structure of excited proton states in
>   the mass region M_{N^*}>1.6 GeV. Most of these resonances decay
>   preferentially to the final states with two pions. The recent
>   preliminary results on electrocouplings and \pi \Delta and \rho p
>   hadronic decays of almost all prominent excited proton states in
>   the mass range from 1.6 to 1.8 GeV will be presented. They were
>   obtained from analysis of the CLAS data on \pi^+\pi^-p
>   electroproduction at photon virtualities 0.5<Q^2<1.5 GeV^2 [1]
>   within the framework of the reaction model [2] updated based on
>   the analysis of the \pi^+\pi^-p electroproduction cross sections
>   at invariant masses of the final hadron system up to 1.8 GeV.  Our
>   results confirmed the electrocouplings of F15(1680) resonance
>   determined in the studies of N\pi exclusive channels [3], which
>   have particular sensitivity to this state.  Instead, the
>   S31(1620), D33(1700), and  P13(1720!
>  ) resonances have dominant decays to the N\pi\pi final states.
>  Electrocouplings of these resonances were determined for the first
>  time from analysis of \pi^+\pi^-p electroproduction with a good
>  accuracy. The results on electrpocouplings of most excited proton
>  states in the mass range up to 1.8 GeV available from CLAS provide
>  stringent constraints for the development of QCD-based
> approaches aimed at describing the complex structure of excited
> nucleon
> states and the dynamics of non-perturbative strong interaction which
> is responsible for the resonance formation.
> 
> References
> 1. M.Ripani et al., CLAS Collaboration, Phys. Rev. Lett. 91, 022002
> (2003).
> 2. V.I.Mokeev et al., Phys. Rev. C80, 045212 (2009).
> 3. L.Tiator et al., Eur. Phys. J. ST198, 141 (2011).
> 
> 
> 
> >
> >
> 
> 
> 
> --
> Prof. Ralf W. Gothe
> Department of Physics and Astronomy
> University of South Carolina
> Columbia, SC 29208
> 
> Phone: 803 777 9025
> Fax: 803 777 3065
> 
> _______________________________________________
> Clas_hadron mailing list
> Clas_hadron at jlab.org
> https://mailman.jlab.org/mailman/listinfo/clas_hadron
>