Search for violation of leptonic universality in semileptonic decays of strange particles in LHCb

Theoretical studies have demonstrated that Semileptonic Hyperon Decays (SHD) can be sensitive to Beyond the Standard Model dynamics that break leptonic flavour universality (LFU). The LFU test observable defined as the ratio between muon and electron modes is sensitive to non standard scalar and ten...

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Autor: Brea Rodríguez, Alexandre
Tipo de recurso: tesis doctoral
Fecha de publicación:2024
País:España
Institución:Universidad de Santiago de Compostela (USC)
Repositorio:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
Idioma:inglés
OAI Identifier:oai:minerva.usc.gal:10347/32902
Acceso en línea:http://hdl.handle.net/10347/32902
Access Level:acceso abierto
Palabra clave:2212 Física teórica
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spelling Search for violation of leptonic universality in semileptonic decays of strange particles in LHCbBrea Rodríguez, Alexandre2212 Física teóricaTheoretical studies have demonstrated that Semileptonic Hyperon Decays (SHD) can be sensitive to Beyond the Standard Model dynamics that break leptonic flavour universality (LFU). The LFU test observable defined as the ratio between muon and electron modes is sensitive to non standard scalar and tensor contributions. Moreover there is a precise SM theoretical prediction. Λ -> p μ ν was proposed as one of the most promising SHD to be studied at LHCb, due to its high acceptance efficiency and abundance in LHCb events. In addition, the electron mode has already been measured precisely and an improvement in the measurement of the BR directly translates into tighter bounds in LFU in s-u quark transitions. In this thesis is presented the blinded measurement of the branching fraction and its consequences.Martínez Santos, DiegoCid Vidal, XabierUniversidade de Santiago de Compostela. Escola de Doutoramento Internacional (EDIUS)20242024-01-0120242024-01-01doctoral thesishttp://purl.org/coar/resource_type/c_db06info:eu-repo/semantics/doctoralThesisapplication/pdfhttp://hdl.handle.net/10347/32902reponame:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostelainstname:Universidad de Santiago de Compostela (USC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:minerva.usc.gal:10347/329022026-06-15T12:47:27Z
dc.title.none.fl_str_mv Search for violation of leptonic universality in semileptonic decays of strange particles in LHCb
title Search for violation of leptonic universality in semileptonic decays of strange particles in LHCb
spellingShingle Search for violation of leptonic universality in semileptonic decays of strange particles in LHCb
Brea Rodríguez, Alexandre
2212 Física teórica
title_short Search for violation of leptonic universality in semileptonic decays of strange particles in LHCb
title_full Search for violation of leptonic universality in semileptonic decays of strange particles in LHCb
title_fullStr Search for violation of leptonic universality in semileptonic decays of strange particles in LHCb
title_full_unstemmed Search for violation of leptonic universality in semileptonic decays of strange particles in LHCb
title_sort Search for violation of leptonic universality in semileptonic decays of strange particles in LHCb
dc.creator.none.fl_str_mv Brea Rodríguez, Alexandre
author Brea Rodríguez, Alexandre
author_facet Brea Rodríguez, Alexandre
author_role author
dc.contributor.none.fl_str_mv Martínez Santos, Diego
Cid Vidal, Xabier
Universidade de Santiago de Compostela. Escola de Doutoramento Internacional (EDIUS)
dc.subject.none.fl_str_mv 2212 Física teórica
topic 2212 Física teórica
description Theoretical studies have demonstrated that Semileptonic Hyperon Decays (SHD) can be sensitive to Beyond the Standard Model dynamics that break leptonic flavour universality (LFU). The LFU test observable defined as the ratio between muon and electron modes is sensitive to non standard scalar and tensor contributions. Moreover there is a precise SM theoretical prediction. Λ -> p μ ν was proposed as one of the most promising SHD to be studied at LHCb, due to its high acceptance efficiency and abundance in LHCb events. In addition, the electron mode has already been measured precisely and an improvement in the measurement of the BR directly translates into tighter bounds in LFU in s-u quark transitions. In this thesis is presented the blinded measurement of the branching fraction and its consequences.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024-01-01
2024
2024-01-01
dc.type.none.fl_str_mv doctoral thesis
http://purl.org/coar/resource_type/c_db06
dc.type.openaire.fl_str_mv info:eu-repo/semantics/doctoralThesis
format doctoralThesis
dc.identifier.none.fl_str_mv http://hdl.handle.net/10347/32902
url http://hdl.handle.net/10347/32902
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
instname:Universidad de Santiago de Compostela (USC)
instname_str Universidad de Santiago de Compostela (USC)
reponame_str Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
collection Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
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