Measuring | V t d | at the LHC
- Autores
- Alvarez, Ezequiel; Da Rold, Leandro; Estevez, Mariel; Kamenik, Jernej F.
- Año de publicación
- 2018
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We propose a direct measurement of the Cabibbo-Kobayashi-Maskawa element Vtd at the LHC. Making use of the imbalance between d and d quark content in the proton, we show that a nonzero Vtd induces a charge asymmetry in the tW associated production. The main backgrounds to this process - tt production, and tW-associated production mediated by Vtb - give charge-symmetric contributions at leading order in QCD. Therefore, using specific kinematic features of the signal, we construct a charge asymmetry in the dilepton final state which - due also to a reduction of systematic uncertainties in the asymmetry - is potentially sensitive to Vtd suppressed effects. In particular, using signal and background simulations up to the detector level, we show that this new observable could already improve the current direct upper bound on |Vtd| with existing LHC data. We also project that |Vtd| values down to ∼10 times the standard model prediction could be probed at the high-luminosity LHC.
Fil: Alvarez, Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín; Argentina
Fil: Da Rold, Leandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Estevez, Mariel. Universidad Nacional de San Martín; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Kamenik, Jernej F.. University of Ljubljana; Eslovenia. Jožef Stefan Institute; Eslovenia - Materia
-
Particle interactions
W & Z bosons - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/93068
Ver los metadatos del registro completo
id |
CONICETDig_94250ca267987fa2fd9cc581193b7620 |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/93068 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
Measuring | V t d | at the LHCAlvarez, EzequielDa Rold, LeandroEstevez, MarielKamenik, Jernej F.Particle interactionsW & Z bosonshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We propose a direct measurement of the Cabibbo-Kobayashi-Maskawa element Vtd at the LHC. Making use of the imbalance between d and d quark content in the proton, we show that a nonzero Vtd induces a charge asymmetry in the tW associated production. The main backgrounds to this process - tt production, and tW-associated production mediated by Vtb - give charge-symmetric contributions at leading order in QCD. Therefore, using specific kinematic features of the signal, we construct a charge asymmetry in the dilepton final state which - due also to a reduction of systematic uncertainties in the asymmetry - is potentially sensitive to Vtd suppressed effects. In particular, using signal and background simulations up to the detector level, we show that this new observable could already improve the current direct upper bound on |Vtd| with existing LHC data. We also project that |Vtd| values down to ∼10 times the standard model prediction could be probed at the high-luminosity LHC.Fil: Alvarez, Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín; ArgentinaFil: Da Rold, Leandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; ArgentinaFil: Estevez, Mariel. Universidad Nacional de San Martín; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Kamenik, Jernej F.. University of Ljubljana; Eslovenia. Jožef Stefan Institute; EsloveniaAmerican Physical Society2018-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/93068Alvarez, Ezequiel; Da Rold, Leandro; Estevez, Mariel; Kamenik, Jernej F.; Measuring | V t d | at the LHC; American Physical Society; Physical Review D; 97; 3; 2-2018; 1-102470-00102470-0029CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://link.aps.org/doi/10.1103/PhysRevD.97.033002info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.97.033002info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:05:00Zoai:ri.conicet.gov.ar:11336/93068instacron: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 10:05:00.774CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Measuring | V t d | at the LHC |
title |
Measuring | V t d | at the LHC |
spellingShingle |
Measuring | V t d | at the LHC Alvarez, Ezequiel Particle interactions W & Z bosons |
title_short |
Measuring | V t d | at the LHC |
title_full |
Measuring | V t d | at the LHC |
title_fullStr |
Measuring | V t d | at the LHC |
title_full_unstemmed |
Measuring | V t d | at the LHC |
title_sort |
Measuring | V t d | at the LHC |
dc.creator.none.fl_str_mv |
Alvarez, Ezequiel Da Rold, Leandro Estevez, Mariel Kamenik, Jernej F. |
author |
Alvarez, Ezequiel |
author_facet |
Alvarez, Ezequiel Da Rold, Leandro Estevez, Mariel Kamenik, Jernej F. |
author_role |
author |
author2 |
Da Rold, Leandro Estevez, Mariel Kamenik, Jernej F. |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Particle interactions W & Z bosons |
topic |
Particle interactions W & Z bosons |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
We propose a direct measurement of the Cabibbo-Kobayashi-Maskawa element Vtd at the LHC. Making use of the imbalance between d and d quark content in the proton, we show that a nonzero Vtd induces a charge asymmetry in the tW associated production. The main backgrounds to this process - tt production, and tW-associated production mediated by Vtb - give charge-symmetric contributions at leading order in QCD. Therefore, using specific kinematic features of the signal, we construct a charge asymmetry in the dilepton final state which - due also to a reduction of systematic uncertainties in the asymmetry - is potentially sensitive to Vtd suppressed effects. In particular, using signal and background simulations up to the detector level, we show that this new observable could already improve the current direct upper bound on |Vtd| with existing LHC data. We also project that |Vtd| values down to ∼10 times the standard model prediction could be probed at the high-luminosity LHC. Fil: Alvarez, Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín; Argentina Fil: Da Rold, Leandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina Fil: Estevez, Mariel. Universidad Nacional de San Martín; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Kamenik, Jernej F.. University of Ljubljana; Eslovenia. Jožef Stefan Institute; Eslovenia |
description |
We propose a direct measurement of the Cabibbo-Kobayashi-Maskawa element Vtd at the LHC. Making use of the imbalance between d and d quark content in the proton, we show that a nonzero Vtd induces a charge asymmetry in the tW associated production. The main backgrounds to this process - tt production, and tW-associated production mediated by Vtb - give charge-symmetric contributions at leading order in QCD. Therefore, using specific kinematic features of the signal, we construct a charge asymmetry in the dilepton final state which - due also to a reduction of systematic uncertainties in the asymmetry - is potentially sensitive to Vtd suppressed effects. In particular, using signal and background simulations up to the detector level, we show that this new observable could already improve the current direct upper bound on |Vtd| with existing LHC data. We also project that |Vtd| values down to ∼10 times the standard model prediction could be probed at the high-luminosity LHC. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-02 |
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/11336/93068 Alvarez, Ezequiel; Da Rold, Leandro; Estevez, Mariel; Kamenik, Jernej F.; Measuring | V t d | at the LHC; American Physical Society; Physical Review D; 97; 3; 2-2018; 1-10 2470-0010 2470-0029 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/93068 |
identifier_str_mv |
Alvarez, Ezequiel; Da Rold, Leandro; Estevez, Mariel; Kamenik, Jernej F.; Measuring | V t d | at the LHC; American Physical Society; Physical Review D; 97; 3; 2-2018; 1-10 2470-0010 2470-0029 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://link.aps.org/doi/10.1103/PhysRevD.97.033002 info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.97.033002 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf 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: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 |
_version_ |
1844613880951603200 |
score |
13.070432 |