dorsal/arxiv
View SchemaTowards a field theoretic understanding of NN->NNpi
| Authors | V. Lensky, V. Baru, J. Haidenbauer, C. Hanhart, A. E. Kudryavtsev, U. -G. Meißner |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0511054 |
| URL | https://arxiv.org/abs/nucl-th/0511054 |
| DOI | 10.1140/epja/i2006-10002-4 |
| Journal | Eur.Phys.J.A27:37-45,2006 |
Abstract
We study the production amplitude for the reaction NN->NNpi up to next--to--leading order in chiral perturbation theory using a counting scheme that takes into account the large scale introduced by the initial momentum. In particular we investigate a subtlety that arises once the leading loop contributions are convoluted with the NN wavefunctions as demanded by the non--perturbative nature of the NN interaction. We show how to properly identify the irreducible contribution of loop diagrams in such type of reaction. The net effect of the inclusion of all next-to-leading order loops is to enhance the leading rescattering amplitude by a factor of 4/3, bringing its contribution to the cross section for pp->dpi+ close to the experimental value.
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"abstract": "We study the production amplitude for the reaction NN-\u003eNNpi up to\nnext--to--leading order in chiral perturbation theory using a counting scheme\nthat takes into account the large scale introduced by the initial momentum. In\nparticular we investigate a subtlety that arises once the leading loop\ncontributions are convoluted with the NN wavefunctions as demanded by the\nnon--perturbative nature of the NN interaction. We show how to properly\nidentify the irreducible contribution of loop diagrams in such type of\nreaction. The net effect of the inclusion of all next-to-leading order loops is\nto enhance the leading rescattering amplitude by a factor of 4/3, bringing its\ncontribution to the cross section for pp-\u003edpi+ close to the experimental value.",
"arxiv_id": "nucl-th/0511054",
"authors": [
"V. Lensky",
"V. Baru",
"J. Haidenbauer",
"C. Hanhart",
"A. E. Kudryavtsev",
"U. -G. Mei\u00dfner"
],
"categories": [
"nucl-th",
"hep-ph",
"nucl-ex"
],
"doi": "10.1140/epja/i2006-10002-4",
"journal_ref": "Eur.Phys.J.A27:37-45,2006",
"title": "Towards a field theoretic understanding of NN-\u003eNNpi",
"url": "https://arxiv.org/abs/nucl-th/0511054"
},
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