A note on the gamma gamma->pi(0)pi(0) reaction in the 1/N expansion of chi PT
| dc.contributor.author | Dobado González, Antonio | |
| dc.contributor.author | Morales, J. | |
| dc.date.accessioned | 2023-06-20T18:50:13Z | |
| dc.date.available | 2023-06-20T18:50:13Z | |
| dc.date.issued | 1996-01-04 | |
| dc.description | © 1996 Elsevier Science B.V.. This work has been supported in part by the Ministerio de Education y Ciencia (Spain) (CICYT AEN93- 0776) and COLCIENCIAS (Colombia). The authors thank F. Cornet, J.F. Donoghue, J. Gasser and J.R. Pelaez for useful information and discussions. | |
| dc.description.abstract | In this work we present the results of a complete calculation of the gamma gamma --> pi(0) pi(0) amplitude to leading order in the large N approximation (N being the number of Goldstone bosons) up to order m(pi)(2)/F-2, The amplitude turns to be proportional a to that of pi(+)pi(-) --> pi(0) pi(0). In spite of the fact that this factorization property cannot hold in general (as it was recently pointed our by Morgan and Penington), it appears here since in the large N limit only the I = J = 0 channel contributes to the gamma gamma --> pi(0) pi(0) reaction. Moreover it seems to be a reasonable approximation in this case since it is possible to reproduce, as a prediction, the experimental data starting from a one-parameter fit of the pi pi scattering data. | |
| dc.description.department | Depto. de Física Teórica | |
| dc.description.faculty | Fac. de Ciencias Físicas | |
| dc.description.refereed | TRUE | |
| dc.description.sponsorship | Ministerio de Education y Ciencia (Spain) | |
| dc.description.sponsorship | CICYT | |
| dc.description.sponsorship | COLCIENCIAS (Colombia) | |
| dc.description.status | pub | |
| dc.eprint.id | https://eprints.ucm.es/id/eprint/22779 | |
| dc.identifier.doi | 10.1016/0370-2693(95)01240-0 | |
| dc.identifier.issn | 0370-2693 | |
| dc.identifier.officialurl | http://www.sciencedirect.com/science/article/pii/0370269395012400 | |
| dc.identifier.relatedurl | http://www.sciencedirect.com | |
| dc.identifier.relatedurl | http://arxiv.org/abs/hep-ph/9511244 | |
| dc.identifier.uri | https://hdl.handle.net/20.500.14352/58735 | |
| dc.issue.number | 01/04/ | |
| dc.journal.title | Physics Letters B | |
| dc.language.iso | eng | |
| dc.page.final | 274 | |
| dc.page.initial | 264 | |
| dc.publisher | Elsevier Science BV | |
| dc.relation.projectID | CICYT AEN93- 0776 | |
| dc.rights.accessRights | open access | |
| dc.subject.cdu | 53 | |
| dc.subject.keyword | Perturbation-Theory | |
| dc.subject.keyword | Collisions | |
| dc.subject.keyword | Resonances | |
| dc.subject.keyword | Amplitude | |
| dc.subject.keyword | Sector | |
| dc.subject.ucm | Física (Física) | |
| dc.subject.unesco | 22 Física | |
| dc.title | A note on the gamma gamma->pi(0)pi(0) reaction in the 1/N expansion of chi PT | |
| dc.type | journal article | |
| dc.volume.number | 365 | |
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| dspace.entity.type | Publication | |
| relation.isAuthorOfPublication | 16523fad-99a9-422c-9a8e-c949ccffadec | |
| relation.isAuthorOfPublication.latestForDiscovery | 16523fad-99a9-422c-9a8e-c949ccffadec |
