Comparing antithetic trends of data for the pion-photon transition form factor
We perform a comparative theoretical study of the data at spacelike momentum transfer for the gamma * gamma + or - [pi] super(0) transition form factor, just reported by the Belle Collaboration, vs. those published before by BABAR, also including the older CLEO and CELLO data. Various implications f...
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| Veröffentlicht in: | Physical review. D, Particles, fields, gravitation, and cosmology Particles, fields, gravitation, and cosmology, 2012-08, Vol.86 (3), Article 031501 |
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| container_issue | 3 |
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| container_title | Physical review. D, Particles, fields, gravitation, and cosmology |
| container_volume | 86 |
| creator | Bakulev, A. P. Mikhailov, S. V. Pimikov, A. V. Stefanis, N. G. |
| description | We perform a comparative theoretical study of the data at spacelike momentum transfer for the gamma * gamma + or - [pi] super(0) transition form factor, just reported by the Belle Collaboration, vs. those published before by BABAR, also including the older CLEO and CELLO data. Various implications for the structure of the [pi] super(0) distribution amplitude vis-a-vis those data are discussed and the existing theoretical predictions are classified into three distinct categories. We argue that the actual bifurcation of the data with antithetic trends is artificial and reason that the Belle data are the better option. |
| doi_str_mv | 10.1103/PhysRevD.86.031501 |
| format | Article |
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| identifier | ISSN: 1550-7998 |
| ispartof | Physical review. D, Particles, fields, gravitation, and cosmology, 2012-08, Vol.86 (3), Article 031501 |
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| language | eng |
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| source | American Physical Society Journals |
| subjects | Amplitudes Bifurcations Categories Cosmology Form factors Gravitation Momentum transfer Trends |
| title | Comparing antithetic trends of data for the pion-photon transition form factor |
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