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Collinear splitting, parton evolution and the strange-quark asymmety of the nucleon in NNLO QCD
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Collinear splitting, parton evolution and the strange-quark asymmety of the nucleon in NNLO QCD
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| dc.contributor.author | Rodrigo García, Germán Vicente | |
| dc.contributor.author | Catani, Stefano | |
| dc.contributor.author | de Florian, Daniel | |
| dc.contributor.author | Vogelsang, Werner | |
| dc.date.accessioned | 2015-06-19T10:45:43Z | |
| dc.date.available | 2015-06-19T10:45:43Z | |
| dc.date.issued | 2004 | |
| dc.identifier.citation | Rodrigo García, Germán Vicente Catani, Stefano de Florian, Daniel Vogelsang, Werner 2004 Collinear splitting, parton evolution and the strange-quark asymmety of the nucleon in NNLO QCD Nuclear Physics B-Proceedings Supplements 135 188 192 | |
| dc.identifier.uri | http://hdl.handle.net/10550/44595 | |
| dc.description.abstract | We consider the collinear limit of QCD amplitudes at one-loop order, and their factorization properties directly in colour space. These results apply to the multiple collinear limit of an arbitrary number of QCD partons, and are a basic ingredient in many higher-order computations. In particular, we discuss the triple collinear limit and its relation to flavour asymmetries in the QCD evolution of parton densities at three loops. As a phenomenological consequence of this new effect, and of the fact that the nucleon has non-vanishing quark valence densities, we study the perturbative generation of a strange--antistrange asymmetry s(x)−s¯(x) in the nucleon's sea. | |
| dc.language.iso | eng | |
| dc.relation.ispartof | Nuclear Physics B-Proceedings Supplements, 2004, vol. 135, p. 188-192 | |
| dc.subject | Física | |
| dc.title | Collinear splitting, parton evolution and the strange-quark asymmety of the nucleon in NNLO QCD | |
| dc.type | journal article | es_ES |
| dc.date.updated | 2015-06-19T10:45:44Z | |
| dc.identifier.doi | 10.1016/j.nuclphysbps.2004.09.048 | |
| dc.identifier.idgrec | 077992 | |
| dc.rights.accessRights | open access | es_ES |
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