Improving photon-hadron discrimination based on cosmic ray surface detector data

Autores
Ros, G.; Supanitsky, Alberto Daniel; Medina Tanco, G. A.; del Peral, L.; Rodríguez Frías, M. D.
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The search for photons at EeV energies and beyond has considerable astrophysical interest and will remain one of the key challenges for ultra-high energy cosmic ray (UHECR) observatories in the near future. Several upper limits to the photon flux have been established since no photon has been unambiguously observed up to now. An improvement in the reconstruction efficiency of the photon showers and/or better discrimination tools are needed to improve these limits apart from an increase in statistics. Following this direction, we analyze in this work the ability of the surface parameter Sb, originally proposed for hadron discrimination, for photon search. Semi-analytical and numerical studies are performed in order to optimize Sb for the discrimination of photons from a proton background in the energy range from 10^18.5 to 10^19.6 eV. Although not shown explicitly, the same analysis has been performed for Fe nuclei and the corresponding results are discussed when appropriate. The effects of different array geometries and the underestimation of the muon component in the shower simulations are analyzed, as well as the Sb dependence on primary energy and zenith angle.
Fil: Ros, G.. Universidad de Alcala. Facultad de Ciencias; España
Fil: Supanitsky, Alberto Daniel. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Medina Tanco, G. A.. Universidad Nacional Autónoma de México. Instituto de Ciencias Nucleares; México
Fil: del Peral, L.. Universidad de Alcala. Facultad de Ciencias; España
Fil: Rodríguez Frías, M. D.. Universidad de Alcala. Facultad de Ciencias; España
Materia
Cosmic Rays
Photon Discrimination
Cherenkov Detectors
Sb Parameter
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/17073
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Improving photon-hadron discrimination based on cosmic ray surface detector dataRos, G.Supanitsky, Alberto DanielMedina Tanco, G. A.del Peral, L.Rodríguez Frías, M. D.Cosmic RaysPhoton DiscriminationCherenkov DetectorsSb Parameterhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The search for photons at EeV energies and beyond has considerable astrophysical interest and will remain one of the key challenges for ultra-high energy cosmic ray (UHECR) observatories in the near future. Several upper limits to the photon flux have been established since no photon has been unambiguously observed up to now. An improvement in the reconstruction efficiency of the photon showers and/or better discrimination tools are needed to improve these limits apart from an increase in statistics. Following this direction, we analyze in this work the ability of the surface parameter Sb, originally proposed for hadron discrimination, for photon search. Semi-analytical and numerical studies are performed in order to optimize Sb for the discrimination of photons from a proton background in the energy range from 10^18.5 to 10^19.6 eV. Although not shown explicitly, the same analysis has been performed for Fe nuclei and the corresponding results are discussed when appropriate. The effects of different array geometries and the underestimation of the muon component in the shower simulations are analyzed, as well as the Sb dependence on primary energy and zenith angle.Fil: Ros, G.. Universidad de Alcala. Facultad de Ciencias; EspañaFil: Supanitsky, Alberto Daniel. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Medina Tanco, G. A.. Universidad Nacional Autónoma de México. Instituto de Ciencias Nucleares; MéxicoFil: del Peral, L.. Universidad de Alcala. Facultad de Ciencias; EspañaFil: Rodríguez Frías, M. D.. Universidad de Alcala. Facultad de Ciencias; EspañaElsevier Science2013-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/17073Ros, G.; Supanitsky, Alberto Daniel; Medina Tanco, G. A.; del Peral, L.; Rodríguez Frías, M. D.; Improving photon-hadron discrimination based on cosmic ray surface detector data; Elsevier Science; Astroparticle Physics; 47; 1; 6-2013; 10-170927-6505enginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.astropartphys.2013.05.014info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S092765051300090Xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:32:55Zoai:ri.conicet.gov.ar:11336/17073instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:32:56.092CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Improving photon-hadron discrimination based on cosmic ray surface detector data
title Improving photon-hadron discrimination based on cosmic ray surface detector data
spellingShingle Improving photon-hadron discrimination based on cosmic ray surface detector data
Ros, G.
Cosmic Rays
Photon Discrimination
Cherenkov Detectors
Sb Parameter
title_short Improving photon-hadron discrimination based on cosmic ray surface detector data
title_full Improving photon-hadron discrimination based on cosmic ray surface detector data
title_fullStr Improving photon-hadron discrimination based on cosmic ray surface detector data
title_full_unstemmed Improving photon-hadron discrimination based on cosmic ray surface detector data
title_sort Improving photon-hadron discrimination based on cosmic ray surface detector data
dc.creator.none.fl_str_mv Ros, G.
Supanitsky, Alberto Daniel
Medina Tanco, G. A.
del Peral, L.
Rodríguez Frías, M. D.
author Ros, G.
author_facet Ros, G.
Supanitsky, Alberto Daniel
Medina Tanco, G. A.
del Peral, L.
Rodríguez Frías, M. D.
author_role author
author2 Supanitsky, Alberto Daniel
Medina Tanco, G. A.
del Peral, L.
Rodríguez Frías, M. D.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Cosmic Rays
Photon Discrimination
Cherenkov Detectors
Sb Parameter
topic Cosmic Rays
Photon Discrimination
Cherenkov Detectors
Sb Parameter
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The search for photons at EeV energies and beyond has considerable astrophysical interest and will remain one of the key challenges for ultra-high energy cosmic ray (UHECR) observatories in the near future. Several upper limits to the photon flux have been established since no photon has been unambiguously observed up to now. An improvement in the reconstruction efficiency of the photon showers and/or better discrimination tools are needed to improve these limits apart from an increase in statistics. Following this direction, we analyze in this work the ability of the surface parameter Sb, originally proposed for hadron discrimination, for photon search. Semi-analytical and numerical studies are performed in order to optimize Sb for the discrimination of photons from a proton background in the energy range from 10^18.5 to 10^19.6 eV. Although not shown explicitly, the same analysis has been performed for Fe nuclei and the corresponding results are discussed when appropriate. The effects of different array geometries and the underestimation of the muon component in the shower simulations are analyzed, as well as the Sb dependence on primary energy and zenith angle.
Fil: Ros, G.. Universidad de Alcala. Facultad de Ciencias; España
Fil: Supanitsky, Alberto Daniel. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Medina Tanco, G. A.. Universidad Nacional Autónoma de México. Instituto de Ciencias Nucleares; México
Fil: del Peral, L.. Universidad de Alcala. Facultad de Ciencias; España
Fil: Rodríguez Frías, M. D.. Universidad de Alcala. Facultad de Ciencias; España
description The search for photons at EeV energies and beyond has considerable astrophysical interest and will remain one of the key challenges for ultra-high energy cosmic ray (UHECR) observatories in the near future. Several upper limits to the photon flux have been established since no photon has been unambiguously observed up to now. An improvement in the reconstruction efficiency of the photon showers and/or better discrimination tools are needed to improve these limits apart from an increase in statistics. Following this direction, we analyze in this work the ability of the surface parameter Sb, originally proposed for hadron discrimination, for photon search. Semi-analytical and numerical studies are performed in order to optimize Sb for the discrimination of photons from a proton background in the energy range from 10^18.5 to 10^19.6 eV. Although not shown explicitly, the same analysis has been performed for Fe nuclei and the corresponding results are discussed when appropriate. The effects of different array geometries and the underestimation of the muon component in the shower simulations are analyzed, as well as the Sb dependence on primary energy and zenith angle.
publishDate 2013
dc.date.none.fl_str_mv 2013-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/17073
Ros, G.; Supanitsky, Alberto Daniel; Medina Tanco, G. A.; del Peral, L.; Rodríguez Frías, M. D.; Improving photon-hadron discrimination based on cosmic ray surface detector data; Elsevier Science; Astroparticle Physics; 47; 1; 6-2013; 10-17
0927-6505
url http://hdl.handle.net/11336/17073
identifier_str_mv Ros, G.; Supanitsky, Alberto Daniel; Medina Tanco, G. A.; del Peral, L.; Rodríguez Frías, M. D.; Improving photon-hadron discrimination based on cosmic ray surface detector data; Elsevier Science; Astroparticle Physics; 47; 1; 6-2013; 10-17
0927-6505
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.astropartphys.2013.05.014
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S092765051300090X
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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