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Valence quark contributions for the gamma N -> P11(1440) transition
High Energy Physics - Phenomenology · Submitted 13 Oct 2010
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim The results are consistent with the experimental data in the high Q2 region, and those from the lattice QCD.
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The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.
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The abstract, sentence by sentence
A covariant spectator quark model is applied to estimate the valence quark contributions to the$ F1*(Q2) and F2*(Q2) transition form factors for the gamma N -> P11(1440) reaction. The Roper resonance, P11(1440), is assumed to be the first radial excitation of the nucleon. The model requires no extra parameters except for those already fixed by the previous studies for the nucleon. The results are consistent with the experimental data in the high Q2 region, and those from the lattice QCD. Finally the model is also applied to estimate the meson cloud contributions from the CLAS and MAID analysis.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | A covariant spectator quark model is applied to estimate the valence quark contributions to the$ F1*(Q2) and F2*(Q2) transition form factors for the gamma N -> P11(1440) reaction. | contribution 0.77 | 0.92 | 0.12 | asserted 0.92 |
| s1 | The Roper resonance, P11(1440), is assumed to be the first radial excitation of the nucleon. | background 0.50 | 0.18 | 0.03 | asserted 0.94 |
| s2 | The model requires no extra parameters except for those already fixed by the previous studies for the nucleon. | method 0.91 | 0.51 | 0.06 | asserted 1.00 |
| s3 | The results are consistent with the experimental data in the high Q2 region, and those from the lattice QCD. | result 0.91 | 0.84 | 0.60 | hedged possibility 0.74 |
| s4 | Finally the model is also applied to estimate the meson cloud contributions from the CLAS and MAID analysis. | contribution 0.88 | 0.78 | 0.07 | asserted 0.98 |
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Original abstract
A covariant spectator quark model is applied to estimate the valence quark contributions to the$ F1*(Q2) and F2*(Q2) transition form factors for the gamma N -> P11(1440) reaction. The Roper resonance, P11(1440), is assumed to be the first radial excitation of the nucleon. The model requires no extra parameters except for those already fixed by the previous studies for the nucleon. The results are consistent with the experimental data in the high Q2 region, and those from the lattice QCD. Finally the model is also applied to estimate the meson cloud contributions from the CLAS and MAID analysis.
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Our results are consistent with the experimental data in the high Q2 region, and those from lattice QCD.
Valence quark contributions for the gamma N -> P11(1440) form factors · 0.99
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