We report the analysis status of single π~0 electroproduction in the resonance region to study the electromagnetic excitation of the nucleon resonances. The study is aimed at understanding of the internal structure and dynamics of the nucleon. The experiment was performed using an unpolarized cryogenic hydrogen target and 2.0 and 5.8 GeV polarized electron beam during the e1e and e1-6 run periods with CLAS at Jefferson Lab. The new measurements will produce a data base with high statistics and large kinematic coverage for the hadronic invariant mass (W) up to 2.0 GeV in the momentum transfer (Q~2) range of 0.3-6.0 GeV~2. Preliminary results will be presented and compared with the various model calculations.
参考文献
| [1] | Isgur N;Karl G .[J].Physical Review D,1978,18:4187. |
| [2] | Isgur N;Karl G .[J].Physical Review D,1979,19:2653. |
| [3] | Frolov VV.;Ahmidouch A.;Armstrong CS.;Assamagan K.;Avery S. Baker OK.;Bosted P.;Burkert V.;Carlini R.;Davidson RM.;Dunne J.;Eden T.;Ent R.;Gaskell D.;Gueye P.;Hinton W.;Keppel C.;Kim W.;Klusman M. Koltenuk D.;Mack D.;Madey R.;Meekins D.;Minehart R.;et al.;Adams GS. .Electroproduction of the Delta(1232) resonance at high momentum transfer[J].Physical review letters,1999(1):45-48. |
| [4] | Joo K et al.[J].Physical Review Letters,2002,88:122001. |
| [5] | Ungaro M et al.[J].Physical Review Letters,2006,97:112003. |
| [6] | Park K et al.[J].Physical Review C:Nuclear Physics,2008,77:015208. |
| [7] | Egiyan H et al.[J].Physical Review C:Nuclear Physics,2006,73:025203. |
| [8] | Mecking B et al.[J].Nucl Inst Meth A,2003,503:513. |
| [9] | Afansev A;Akushevich I;Burkert V D;Joo K .[J].Physical Review D,2002,66:074004. |
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