Recent results on nucleon resonance electrocouplings from the studies of π<SUP>+</SUP>π<SUP>－</SUP>p electroproduction with the CLAS detector

V. D. Burkert; L. Elouadrhiri; G. V. Fedotov; E. N. Golovach; B. S. Ishkhanov

doi:10.1088/1674-1137/33/12/025

Chinese Physics C> 2009, Vol. 33> Issue(12) : 1210-1215 DOI: 10.1088/1674-1137/33/12/025

Recent results on nucleon resonance electrocouplings from the studies of π⁺π^－p electroproduction with the CLAS detector

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Abstract：
Recent results on nucleon resonance studies in π⁺π^－p electro- production off protons with the CLAS detector are presented. The analysis of CLAS data allowed us to determine all essential contributing mechanisms, providing a credible separation between resonant and non-resonant parts of the cross sections in a wide kinematical area of invariant masses of the final hadronic system 1.32<1.5 GeV². Electrocouplings of several excited proton states with masses less than 1.8 GeV were obtained for the first time from the analysis of π⁺π^－p exclusive electroproduction channel.

References

[1]

. Burkert V D, Lee T S H. In: \Electromagnetic Interactions and Hadronic Structure", ed by F. Close, S. Donnachie, G.Shaw, Cambridge Monographs on Particle Physics, NuclearPhysics and Cosmology 77, 20072. Ripani M et al. Phys. Rev. Lett., 2003, 91: 0220023. Fedotov G V et al (CLAS collaboration). Phys. Rev. C,2009, 79: 015204 [arXiv:0809.1562 [nucl-ex]]4. Mokeev V I et al. arXiv: 0809.4158[hep-ph]5. Ripani M et al. Nucl. Phys. A, 2000, 672: 2206. Mokeev V I, Burkert V D. J. Phys. Conf. Ser., 2007, 69:012019. [hep-ph/0701056]7. Mokeev V I, Burkert V D et al. Proc. of the Workshop on the Physics of Excited Nucleon. NSTAR2005, ed. by Cap-stick S, Crede V, Eugenio P. hep-ph/05121648. Burkert V D et al. Phys. Atom. Nucl., 2007, 70: 4279. Aznauryan I G, Burkert V D, Egiyan H et al. Phys. Rev.C, 2005, 71: 01520110. Aznauryan I G et al (CLAS collaboration). Phys. Rev. C,2008, 78: 04520911. Burkert V D. AIP Conf. Proc., 2008, 1056: 34812. Mokeev V I et al. Proceedings of the 11th Workshop onthe Physics of Excited Nucleons. NSTAR2007, Springer,ed. by Hammer H W, Kleber V, Thoma U, Schmieden H.arXiv:0710.5616[hep-ex]13. Aznauryan I G et al. Phys. Rev. C, 2005, 72: 04520114. Capstick S, Keister B D. Phys. Rev. D, 1995, 51: 359815. Aznauryan I G et al. Phys. Rev. C, 2007, 76: 02521216. Julia Diaz B, Lee T S H et al. Phys. Rev. C, 2007, 77:04520517. Dugger M et al (CLAS collaboration). Phys. Rev. C, 2009,79: 065206; Kamano H et al. arXiv: 0909.1129 [nucl-th](recent EBAC paper on 2 photoproduction)

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V. D. Burkert, L. Elouadrhiri, G. V. Fedotov, E. N. Golovach and B. S. Ishkhanov. Recent results on nucleon resonance electrocouplings from the studies of π⁺π^－p electroproduction with the CLAS detector[J]. Chinese Physics C, 2009, 33(12): 1210-1215. doi: 10.1088/1674-1137/33/12/025

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Received: 2009-08-07
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Recent results on nucleon resonance electrocouplings from the studies of π⁺π^－p electroproduction with the CLAS detector

Received Date: 2009-08-07

Accepted Date: 1900-01-01

Available Online: 2009-12-05

Abstract:

Recent results on nucleon resonance studies in π⁺π^－p electro- production off protons with the CLAS detector are presented. The analysis of CLAS data allowed us to determine all essential contributing mechanisms, providing a credible separation between resonant and non-resonant parts of the cross sections in a wide kinematical area of invariant masses of the final hadronic system 1.32<1.5 GeV². Electrocouplings of several excited proton states with masses less than 1.8 GeV were obtained for the first time from the analysis of π⁺π^－p exclusive electroproduction channel.

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Recent results on nucleon resonance electrocouplings from the studies of π⁺π^－p electroproduction with the CLAS detector

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Recent results on nucleon resonance electrocouplings from the studies of π⁺π^－p electroproduction with the CLAS detector

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Recent results on nucleon resonance electrocouplings from the studies of π+π－p electroproduction with the CLAS detector

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Recent results on nucleon resonance electrocouplings from the studies of π+π－p electroproduction with the CLAS detector

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Recent results on nucleon resonance electrocouplings from the studies of π⁺π^－p electroproduction with the CLAS detector

Recent results on nucleon resonance electrocouplings from the studies of π⁺π^－p electroproduction with the CLAS detector