English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/142777
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:


Properties of nucleon resonances by means of a genetic algorithm

AuthorsFernández-Ramírez, César CSIC; Moya de Guerra, Elvira ORCID; Udías, A.; Udías, J. M.
Issue Date24-Jun-2008
PublisherAmerican Physical Society
CitationPhysical Review C - Nuclear Physics 77: 065212 (2008)
AbstractWe present an optimization scheme that employs a genetic algorithm (GA) to determine the properties of low-lying nucleon excitations within a realistic photo-pion production model based upon an effective Lagrangian. We show that with this modern optimization technique it is possible to reliably assess the parameters of the resonances and the associated error bars as well as to identify weaknesses in the models. To illustrate the problems the optimization process may encounter, we provide results obtained for the nucleon resonances Δ(1230) and Δ(1700). The former can be easily isolated and thus has been studied in depth, while the latter is not as well known experimentally. © 2008 The American Physical Society.
Description11 págs.; 10 figs.; 3 tabs. ; PACS number(s): 14.20.Gk, 13.60.Le, 02.60.Pn, 02.70.−c
Publisher version (URL)https://doi.org/10.1103/PhysRevC.77.065212
Identifiersdoi: 10.1103/PhysRevC.77.065212
issn: 0556-2813
Appears in Collections:(CFMAC-IEM) Artículos
Files in This Item:
File Description SizeFormat 
Properties.pdf298,38 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.