Covariant spectator theory of np scattering: Phase shifts obtained from precision fits to data below 350 MeV
Autor(a) principal: | |
---|---|
Data de Publicação: | 2008 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/6022 |
Resumo: | Using the covariant spectator theory (CST), we present two one-boson-exchange kernels that have been successfully adjusted to fit the 2007 world np data (containing 3788 data) below 350 MeV. One model (which we designate WJC-1) has 27 parameters and fits with a χ2/Ndata = 1.06. The other model (designated WJC-2) has only 15 parameters and fits with a χ2/Ndata = 1.12. Both of these models also reproduce the experimental triton binding energy without introducing additional irreducible three-nucleon forces. One result of this work is a new phase-shift analysis, updated for all data until 2006, which is useful even if one does not work within the CST. In carrying out these fits we have reviewed the entire database, adding new data not previously used in other high precision fits and restoring some data omitted in previous fits. A full discussion and evaluation of the 2007 database is presented. |
id |
RCAP_e723bedc3756185c1642b3d3bb131022 |
---|---|
oai_identifier_str |
oai:dspace.uevora.pt:10174/6022 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Covariant spectator theory of np scattering: Phase shifts obtained from precision fits to data below 350 MeVNeutron-proton scatteringPhase-shiftsCovariant Spectator TheoryNucleon-Nucleon InteractionUsing the covariant spectator theory (CST), we present two one-boson-exchange kernels that have been successfully adjusted to fit the 2007 world np data (containing 3788 data) below 350 MeV. One model (which we designate WJC-1) has 27 parameters and fits with a χ2/Ndata = 1.06. The other model (designated WJC-2) has only 15 parameters and fits with a χ2/Ndata = 1.12. Both of these models also reproduce the experimental triton binding energy without introducing additional irreducible three-nucleon forces. One result of this work is a new phase-shift analysis, updated for all data until 2006, which is useful even if one does not work within the CST. In carrying out these fits we have reviewed the entire database, adding new data not previously used in other high precision fits and restoring some data omitted in previous fits. A full discussion and evaluation of the 2007 database is presented.The American Physical Society2012-11-27T15:41:28Z2012-11-272008-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/6022http://hdl.handle.net/10174/6022engPhys. Rev. C 78, 014005 (2008)http://link.aps.org/doi/10.1103/PhysRevC.78.014005gross@jlab.orgstadler@cii.fc.ul.pt347Gross, FranzStadler, Alfredinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T18:45:27Zoai:dspace.uevora.pt:10174/6022Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:01:00.959139Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Covariant spectator theory of np scattering: Phase shifts obtained from precision fits to data below 350 MeV |
title |
Covariant spectator theory of np scattering: Phase shifts obtained from precision fits to data below 350 MeV |
spellingShingle |
Covariant spectator theory of np scattering: Phase shifts obtained from precision fits to data below 350 MeV Gross, Franz Neutron-proton scattering Phase-shifts Covariant Spectator Theory Nucleon-Nucleon Interaction |
title_short |
Covariant spectator theory of np scattering: Phase shifts obtained from precision fits to data below 350 MeV |
title_full |
Covariant spectator theory of np scattering: Phase shifts obtained from precision fits to data below 350 MeV |
title_fullStr |
Covariant spectator theory of np scattering: Phase shifts obtained from precision fits to data below 350 MeV |
title_full_unstemmed |
Covariant spectator theory of np scattering: Phase shifts obtained from precision fits to data below 350 MeV |
title_sort |
Covariant spectator theory of np scattering: Phase shifts obtained from precision fits to data below 350 MeV |
author |
Gross, Franz |
author_facet |
Gross, Franz Stadler, Alfred |
author_role |
author |
author2 |
Stadler, Alfred |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Gross, Franz Stadler, Alfred |
dc.subject.por.fl_str_mv |
Neutron-proton scattering Phase-shifts Covariant Spectator Theory Nucleon-Nucleon Interaction |
topic |
Neutron-proton scattering Phase-shifts Covariant Spectator Theory Nucleon-Nucleon Interaction |
description |
Using the covariant spectator theory (CST), we present two one-boson-exchange kernels that have been successfully adjusted to fit the 2007 world np data (containing 3788 data) below 350 MeV. One model (which we designate WJC-1) has 27 parameters and fits with a χ2/Ndata = 1.06. The other model (designated WJC-2) has only 15 parameters and fits with a χ2/Ndata = 1.12. Both of these models also reproduce the experimental triton binding energy without introducing additional irreducible three-nucleon forces. One result of this work is a new phase-shift analysis, updated for all data until 2006, which is useful even if one does not work within the CST. In carrying out these fits we have reviewed the entire database, adding new data not previously used in other high precision fits and restoring some data omitted in previous fits. A full discussion and evaluation of the 2007 database is presented. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-01-01T00:00:00Z 2012-11-27T15:41:28Z 2012-11-27 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/6022 http://hdl.handle.net/10174/6022 |
url |
http://hdl.handle.net/10174/6022 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Phys. Rev. C 78, 014005 (2008) http://link.aps.org/doi/10.1103/PhysRevC.78.014005 gross@jlab.org stadler@cii.fc.ul.pt 347 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
The American Physical Society |
publisher.none.fl_str_mv |
The American Physical Society |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
_version_ |
1799136493378207744 |