τ decay into a pseudoscalar and an axial-vector meson

We study theoretically the decay τ-→ντP-A, with P- a π- or K- and A an axial-vector resonance b1(1235), h1(1170), h1(1380), a1(1260), f1(1285) or any of the two poles of the K1(1270). The process proceeds through a triangle mechanism where a vector meson pair is first produced from the weak current...

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Detalhes bibliográficos
Autores: Dai, L.R., Roca, Luis, Oset, Eulogi
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/195284
Acesso em linha:http://hdl.handle.net/10261/195284
Access Level:acceso abierto
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spelling τ decay into a pseudoscalar and an axial-vector mesonDai, L.R.Roca, LuisOset, EulogiWe study theoretically the decay τ-→ντP-A, with P- a π- or K- and A an axial-vector resonance b1(1235), h1(1170), h1(1380), a1(1260), f1(1285) or any of the two poles of the K1(1270). The process proceeds through a triangle mechanism where a vector meson pair is first produced from the weak current and then one of the vectors produces two pseudoscalars, one of which reinteracts with the other vector to produce the axial resonance. For the initial weak hadronic production we use a recent formalism to account for the hadronization after the initial quark-antiquark pair produced from the weak current, which explicitly filters G-parity states and obtain easy analytic formulas after working out the angular momentum algebra. The model also takes advantage of the chiral unitary theories to evaluate the vector-pseudoscalar (VP) amplitudes, where the axial-vector resonances were obtained as dynamically generated from the vector-pseudoscalar interaction. We make predictions for invariant mass distribution and branching ratios for the channels considered.Peer ReviewedAmerican Physical SocietyMinisterio de Economía y Competitividad (España)Agencia Estatal de Investigación (España)Agencia Estatal de Investigación (España)Ministerio de Ciencia, Innovación y Universidades (España)Generalitat ValencianaConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2019201920192019info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/195284reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#FIS2017-84038-C2-2-P/AEI/10.13039/501100011033FIS2017-84038-C2-1-P/AEI/10.13039/501100011033info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/FIS2017-84038-C2-1-Pinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/FIS2017-84038-C2-2-Pinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/SEV-2014-0398Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1952842026-05-22T06:33:51Z
dc.title.none.fl_str_mv τ decay into a pseudoscalar and an axial-vector meson
title τ decay into a pseudoscalar and an axial-vector meson
spellingShingle τ decay into a pseudoscalar and an axial-vector meson
Dai, L.R.
title_short τ decay into a pseudoscalar and an axial-vector meson
title_full τ decay into a pseudoscalar and an axial-vector meson
title_fullStr τ decay into a pseudoscalar and an axial-vector meson
title_full_unstemmed τ decay into a pseudoscalar and an axial-vector meson
title_sort τ decay into a pseudoscalar and an axial-vector meson
dc.creator.none.fl_str_mv Dai, L.R.
Roca, Luis
Oset, Eulogi
author Dai, L.R.
author_facet Dai, L.R.
Roca, Luis
Oset, Eulogi
author_role author
author2 Roca, Luis
Oset, Eulogi
author2_role author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
Agencia Estatal de Investigación (España)
Agencia Estatal de Investigación (España)
Ministerio de Ciencia, Innovación y Universidades (España)
Generalitat Valenciana
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
description We study theoretically the decay τ-→ντP-A, with P- a π- or K- and A an axial-vector resonance b1(1235), h1(1170), h1(1380), a1(1260), f1(1285) or any of the two poles of the K1(1270). The process proceeds through a triangle mechanism where a vector meson pair is first produced from the weak current and then one of the vectors produces two pseudoscalars, one of which reinteracts with the other vector to produce the axial resonance. For the initial weak hadronic production we use a recent formalism to account for the hadronization after the initial quark-antiquark pair produced from the weak current, which explicitly filters G-parity states and obtain easy analytic formulas after working out the angular momentum algebra. The model also takes advantage of the chiral unitary theories to evaluate the vector-pseudoscalar (VP) amplitudes, where the axial-vector resonances were obtained as dynamically generated from the vector-pseudoscalar interaction. We make predictions for invariant mass distribution and branching ratios for the channels considered.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/195284
url http://hdl.handle.net/10261/195284
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
FIS2017-84038-C2-2-P/AEI/10.13039/501100011033
FIS2017-84038-C2-1-P/AEI/10.13039/501100011033
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/FIS2017-84038-C2-1-P
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/FIS2017-84038-C2-2-P
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/SEV-2014-0398
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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
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score 15,812429

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