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dc.contributor.authorHiga, R.-
dc.contributor.authorHammer, H. -W.-
dc.contributor.authorvan Kolck, U.-
dc.date.accessioned2013-09-30T18:55:43Z-
dc.date.accessioned2014-05-20T14:10:29Z-
dc.date.accessioned2016-10-25T17:21:15Z-
dc.date.available2013-09-30T18:55:43Z-
dc.date.available2014-05-20T14:10:29Z-
dc.date.available2016-10-25T17:21:15Z-
dc.date.issued2008-09-01-
dc.identifierhttp://dx.doi.org/10.1016/j.nuclphysa.2008.06.003-
dc.identifier.citationNuclear Physics A. Amsterdam: Elsevier B.V., v. 809, n. 3-4, p. 171-188, 2008.-
dc.identifier.issn0375-9474-
dc.identifier.urihttp://hdl.handle.net/11449/24325-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/24325-
dc.description.abstractWe study the two-alpha-particle (alpha alpha) system in an Effective Field Theory (EFT) for halo-like systems. We propose a power Counting that incorporates the subtle interplay of strong and electromagnetic forces leading to a narrow resonance at an energy of about 0.1 MeV. We investigate the EFT expansion in detail, and compare its results with existing low-energy aa phase shifts and previously determined effective-range parameters. Good description of the data is obtained with a surprising amount of fine-tuning. This scenario can be viewed as an expansion around the limit where, when electromagnetic interactions are turned off, the (8)Be ground state is at threshold and exhibits conformal invariance. We also discuss possible extensions to systems with more than two alpha particles. (c) 2008 Elsevier B.V. All rights reserved.en
dc.format.extent171-188-
dc.language.isoeng-
dc.publisherElsevier B.V.-
dc.sourceWeb of Science-
dc.subjecteffective field theoryen
dc.subjectnuclear clustersen
dc.titlealpha alpha scattering in halo effective field theoryen
dc.typeoutro-
dc.contributor.institutionUniv Bonn-
dc.contributor.institutionUniversity of Arizona-
dc.contributor.institutionUniv Groningen-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUniv Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany-
dc.description.affiliationUniv Arizona, Dept Phys, Tucson, AZ 85721 USA-
dc.description.affiliationUniv Groningen, Kernfys Versneller Inst, NL-9747 AA Groningen, Netherlands-
dc.description.affiliationUniv Estadual Paulista, Inst Fis Teor, BR-01405900 São Paulo, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista, Inst Fis Teor, BR-01405900 São Paulo, Brazil-
dc.identifier.doi10.1016/j.nuclphysa.2008.06.003-
dc.identifier.wosWOS:000258860600003-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofNuclear Physics A-
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