Home > Publications database > Exclusive photoproduction of π 0 up to large values of Mandelstam variables s , t , and u with CLAS > print |
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024 | 7 | _ | |a 10.1103/PhysRevC.98.015207 |2 doi |
024 | 7 | _ | |a 0556-2813 |2 ISSN |
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082 | _ | _ | |a 530 |
100 | 1 | _ | |a Kunkel, Michael C. |0 P:(DE-Juel1)166086 |b 0 |e Corresponding author |
245 | _ | _ | |a Exclusive photoproduction of π 0 up to large values of Mandelstam variables s , t , and u with CLAS |
260 | _ | _ | |a Woodbury, NY |c 2018 |b Inst. |
264 | _ | 1 | |3 online |2 Crossref |b American Physical Society (APS) |c 2018-07-25 |
264 | _ | 1 | |3 print |2 Crossref |b American Physical Society (APS) |c 2018-07-01 |
336 | 7 | _ | |a article |2 DRIVER |
336 | 7 | _ | |a Output Types/Journal article |2 DataCite |
336 | 7 | _ | |a Journal Article |b journal |m journal |0 PUB:(DE-HGF)16 |s 1532955907_31727 |2 PUB:(DE-HGF) |
336 | 7 | _ | |a ARTICLE |2 BibTeX |
336 | 7 | _ | |a JOURNAL_ARTICLE |2 ORCID |
336 | 7 | _ | |a Journal Article |0 0 |2 EndNote |
520 | _ | _ | |a Exclusive photoproduction cross sections have been measured for the process γp→pπ0[e+e−(γ)] with the Dalitz decay final state using tagged photon energies in the range of Eγ=1.275–5.425 GeV. The complete angular distribution of the final state π0, for the entire photon energy range up to large values of t and u, has been measured for the first time. The data obtained show that the cross section dσ/dt, at mid to large angles, decreases with energy as s−6.89±0.26. This is in agreement with the perturbative QCD quark counting rule prediction of s−7. Paradoxically, the size of angular distribution of measured cross sections is greatly underestimated by the QCD-based generalized parton distribution mechanism at highest available invariant energy s=11GeV2. At the same time, the Regge-exchange-based models for π0 photoproduction are more consistent with experimental data. |
536 | _ | _ | |a 6G12 - FAIR (POF3-624) |0 G:(DE-HGF)POF3-6G12 |c POF3-624 |f POF III |x 0 |
542 | _ | _ | |i 2018-07-25 |2 Crossref |u https://creativecommons.org/licenses/by/4.0/ |
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700 | 1 | _ | |a Goldstein, G. R. |b 4 |
700 | 1 | _ | |a Adhikari, K. P. |b 5 |
700 | 1 | _ | |a Adhikari, S. |b 6 |
700 | 1 | _ | |a Avakian, H. |b 7 |
700 | 1 | _ | |a Ball, J. |b 8 |
700 | 1 | _ | |a Balossino, I. |b 9 |
700 | 1 | _ | |a Barion, L. |b 10 |
700 | 1 | _ | |a Battaglieri, M. |b 11 |
700 | 1 | _ | |a Batourine, V. |b 12 |
700 | 1 | _ | |a Bedlinskiy, I. |b 13 |
700 | 1 | _ | |a Biselli, A. S. |b 14 |
700 | 1 | _ | |a Boiarinov, S. |b 15 |
700 | 1 | _ | |a Briscoe, W. J. |b 16 |
700 | 1 | _ | |a Brooks, W. K. |b 17 |
700 | 1 | _ | |a Bültmann, S. |b 18 |
700 | 1 | _ | |a Burkert, V. D. |b 19 |
700 | 1 | _ | |a Cao, F. |b 20 |
700 | 1 | _ | |a Carman, D. S. |b 21 |
700 | 1 | _ | |a Celentano, A. |b 22 |
700 | 1 | _ | |a Charles, G. |b 23 |
700 | 1 | _ | |a Chetry, T. |b 24 |
700 | 1 | _ | |a Ciullo, G. |b 25 |
700 | 1 | _ | |a Clark, L. |b 26 |
700 | 1 | _ | |a Cole, P. L. |b 27 |
700 | 1 | _ | |a Contalbrigo, M. |b 28 |
700 | 1 | _ | |a Cortes, O. |b 29 |
700 | 1 | _ | |a Crede, V. |b 30 |
700 | 1 | _ | |a D'Angelo, A. |b 31 |
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700 | 1 | _ | |a De Sanctis, E. |b 34 |
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700 | 1 | _ | |a Deur, A. |b 37 |
700 | 1 | _ | |a Djalali, C. |b 38 |
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700 | 1 | _ | |a Dupre, R. |b 40 |
700 | 1 | _ | |a Egiyan, H. |b 41 |
700 | 1 | _ | |a El Alaoui, A. |b 42 |
700 | 1 | _ | |a El Fassi, L. |b 43 |
700 | 1 | _ | |a Elouadrhiri, L. |b 44 |
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700 | 1 | _ | |a Fedotov, G. |b 46 |
700 | 1 | _ | |a Fersch, R. |b 47 |
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700 | 1 | _ | |a Gilfoyle, G. P. |b 53 |
700 | 1 | _ | |a Giovanetti, K. L. |b 54 |
700 | 1 | _ | |a Girod, F. X. |b 55 |
700 | 1 | _ | |a Glazier, D. I. |b 56 |
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700 | 1 | _ | |a Nadel-Turonski, P. |b 100 |
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700 | 1 | _ | |a Stepanyan, S. |b 127 |
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700 | 1 | _ | |a Sparveris, N. |b 131 |
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700 | 1 | _ | |a Taiuti, M. |b 133 |
700 | 1 | _ | |a Tan, J. A. |b 134 |
700 | 1 | _ | |a Ungaro, M. |b 135 |
700 | 1 | _ | |a Voskanyan, H. |b 136 |
700 | 1 | _ | |a Voutier, E. |b 137 |
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700 | 1 | _ | |a Zhang, J. |0 P:(DE-HGF)0 |b 143 |
700 | 1 | _ | |a Zhao, Z. W. |b 144 |
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