Viability of Delta m(2) similar to 1 eV(2) sterile neutrino mixing models in light of MiniBooNE electron neutrino and antineutrino data from the Booster and NuMI beamlines

This paper examines sterile neutrino oscillation models in light of recently published results from the MiniBooNE Experiment. The new MiniBooNE data include the updated neutrino results, including the low-energy region, and the first antineutrino results, as well as first results from the off-axis N...

Descripción completa

Detalles Bibliográficos
Autores: Sorel, Michel, Shaevitz, M. H., Conrad, J. M., Djurcic, Z., Karagiorgi, G.
Tipo de recurso: artículo
Fecha de publicación:2009
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/20816
Acceso en línea:http://hdl.handle.net/10261/20816
Access Level:acceso abierto
id ES_9ee6944cbf3e824bec0800964cf0dfe2
oai_identifier_str oai:digital.csic.es:10261/20816
network_acronym_str ES
network_name_str España
repository_id_str
spelling Viability of Delta m(2) similar to 1 eV(2) sterile neutrino mixing models in light of MiniBooNE electron neutrino and antineutrino data from the Booster and NuMI beamlinesSorel, MichelShaevitz, M. H.Conrad, J. M.Djurcic, Z.Karagiorgi, G.This paper examines sterile neutrino oscillation models in light of recently published results from the MiniBooNE Experiment. The new MiniBooNE data include the updated neutrino results, including the low-energy region, and the first antineutrino results, as well as first results from the off-axis NuMI beam observed in the MiniBooNE detector. These new global fits also include data from LSND, KARMEN, NOMAD, Bugey, CHOOZ, CCFR84, and CDHS. Constraints from atmospheric oscillation data have been imposed. We test the validity of the three-active plus one-sterile (3 + 1) and two-sterile (3 + 2) oscillation hypotheses, and we estimate the allowed range of fundamental neutrino oscillation parameters in each case. We assume CPT-invariance throughout. However, in the case of (3 + 2) oscillations, CP violation is allowed. We find that, with the addition of the new MiniBooNE data sets, a (3 + 2) oscillation hypothesis provides only a marginally better description of all short-baseline data over a (3 + 1) oscillation hypothesis. In the case of (3 + 2) CP-violating models, we obtain good chi(2)-probabilities in general due to the large number of fit parameters. However, we find large incompatibilities among appearance and disappearance experiments, consistent with previous analyses. Aside from LSND, the data sets responsible for this tension are the MiniBooNE neutrino data set, CDHS, and the atmospheric constraints. In addition, new incompatibilities are found between the appearance experiments themselves (MiniBooNE, LSND, KARMEN and NOMAD), independent of CP-violation assumptions. On the other hand, fits to antineutrino-only data sets, including appearance and disappearance experiments, are found significantly more compatible, even within a (3 + 1) oscillation scenario.Peer reviewedAmerican Physical Society201020102009info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_650122195 bytesapplication/pdfhttp://hdl.handle.net/10261/20816reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1103/PhysRevD.80.073001info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/208162026-05-22T06:33:51Z
dc.title.none.fl_str_mv Viability of Delta m(2) similar to 1 eV(2) sterile neutrino mixing models in light of MiniBooNE electron neutrino and antineutrino data from the Booster and NuMI beamlines
title Viability of Delta m(2) similar to 1 eV(2) sterile neutrino mixing models in light of MiniBooNE electron neutrino and antineutrino data from the Booster and NuMI beamlines
spellingShingle Viability of Delta m(2) similar to 1 eV(2) sterile neutrino mixing models in light of MiniBooNE electron neutrino and antineutrino data from the Booster and NuMI beamlines
Sorel, Michel
title_short Viability of Delta m(2) similar to 1 eV(2) sterile neutrino mixing models in light of MiniBooNE electron neutrino and antineutrino data from the Booster and NuMI beamlines
title_full Viability of Delta m(2) similar to 1 eV(2) sterile neutrino mixing models in light of MiniBooNE electron neutrino and antineutrino data from the Booster and NuMI beamlines
title_fullStr Viability of Delta m(2) similar to 1 eV(2) sterile neutrino mixing models in light of MiniBooNE electron neutrino and antineutrino data from the Booster and NuMI beamlines
title_full_unstemmed Viability of Delta m(2) similar to 1 eV(2) sterile neutrino mixing models in light of MiniBooNE electron neutrino and antineutrino data from the Booster and NuMI beamlines
title_sort Viability of Delta m(2) similar to 1 eV(2) sterile neutrino mixing models in light of MiniBooNE electron neutrino and antineutrino data from the Booster and NuMI beamlines
dc.creator.none.fl_str_mv Sorel, Michel
Shaevitz, M. H.
Conrad, J. M.
Djurcic, Z.
Karagiorgi, G.
author Sorel, Michel
author_facet Sorel, Michel
Shaevitz, M. H.
Conrad, J. M.
Djurcic, Z.
Karagiorgi, G.
author_role author
author2 Shaevitz, M. H.
Conrad, J. M.
Djurcic, Z.
Karagiorgi, G.
author2_role author
author
author
author
description This paper examines sterile neutrino oscillation models in light of recently published results from the MiniBooNE Experiment. The new MiniBooNE data include the updated neutrino results, including the low-energy region, and the first antineutrino results, as well as first results from the off-axis NuMI beam observed in the MiniBooNE detector. These new global fits also include data from LSND, KARMEN, NOMAD, Bugey, CHOOZ, CCFR84, and CDHS. Constraints from atmospheric oscillation data have been imposed. We test the validity of the three-active plus one-sterile (3 + 1) and two-sterile (3 + 2) oscillation hypotheses, and we estimate the allowed range of fundamental neutrino oscillation parameters in each case. We assume CPT-invariance throughout. However, in the case of (3 + 2) oscillations, CP violation is allowed. We find that, with the addition of the new MiniBooNE data sets, a (3 + 2) oscillation hypothesis provides only a marginally better description of all short-baseline data over a (3 + 1) oscillation hypothesis. In the case of (3 + 2) CP-violating models, we obtain good chi(2)-probabilities in general due to the large number of fit parameters. However, we find large incompatibilities among appearance and disappearance experiments, consistent with previous analyses. Aside from LSND, the data sets responsible for this tension are the MiniBooNE neutrino data set, CDHS, and the atmospheric constraints. In addition, new incompatibilities are found between the appearance experiments themselves (MiniBooNE, LSND, KARMEN and NOMAD), independent of CP-violation assumptions. On the other hand, fits to antineutrino-only data sets, including appearance and disappearance experiments, are found significantly more compatible, even within a (3 + 1) oscillation scenario.
publishDate 2009
dc.date.none.fl_str_mv 2009
2010
2010
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/20816
url http://hdl.handle.net/10261/20816
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1103/PhysRevD.80.073001
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 22195 bytes
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869414865127342080
score 15,812429

Similares en LA Referencia