Using t→bb̄c to search for new physics
- Autores
- Kiers, Ken; Knighton, Tal; London, David; Russell, Matthew; Szynkman, Alejandro Andrés; Webster, Kari
- Año de publicación
- 2011
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We consider new-physics (NP) contributions to the decay t→bb̄c. We parametrize the NP couplings by an effective Lagrangian consisting of 10 Lorentz structures. We show that the presence of NP can be detected through the measurement of the partial width. A partial identification of the NP can be achieved through the measurements of a forward-backward-like asymmetry, a top-quark-spin-dependent asymmetry, the partial-rate asymmetry, and a triple-product asymmetry. These observables, which vanish in the standard model, can all take values in the 10%-20% range in the presence of NP. Since |V tbVcb|VtsVcs|, most of our results also hold, with small changes, for t→ss̄c.
Facultad de Ciencias Exactas - Materia
-
Física
Ciencias Exactas
flavor changing neutral current
New physics
Nueva física - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/84731
Ver los metadatos del registro completo
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Using t→bb̄c to search for new physicsKiers, KenKnighton, TalLondon, DavidRussell, MatthewSzynkman, Alejandro AndrésWebster, KariFísicaCiencias Exactasflavor changing neutral currentNew physicsNueva físicaWe consider new-physics (NP) contributions to the decay t→bb̄c. We parametrize the NP couplings by an effective Lagrangian consisting of 10 Lorentz structures. We show that the presence of NP can be detected through the measurement of the partial width. A partial identification of the NP can be achieved through the measurements of a forward-backward-like asymmetry, a top-quark-spin-dependent asymmetry, the partial-rate asymmetry, and a triple-product asymmetry. These observables, which vanish in the standard model, can all take values in the 10%-20% range in the presence of NP. Since |V tbVcb|VtsVcs|, most of our results also hold, with small changes, for t→ss̄c.Facultad de Ciencias Exactas2011-10-13info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/84731enginfo:eu-repo/semantics/altIdentifier/issn/1550-7998info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.84.074018info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:16:06Zoai:sedici.unlp.edu.ar:10915/84731Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:06.377SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Using t→bb̄c to search for new physics |
| title |
Using t→bb̄c to search for new physics |
| spellingShingle |
Using t→bb̄c to search for new physics Kiers, Ken Física Ciencias Exactas flavor changing neutral current New physics Nueva física |
| title_short |
Using t→bb̄c to search for new physics |
| title_full |
Using t→bb̄c to search for new physics |
| title_fullStr |
Using t→bb̄c to search for new physics |
| title_full_unstemmed |
Using t→bb̄c to search for new physics |
| title_sort |
Using t→bb̄c to search for new physics |
| dc.creator.none.fl_str_mv |
Kiers, Ken Knighton, Tal London, David Russell, Matthew Szynkman, Alejandro Andrés Webster, Kari |
| author |
Kiers, Ken |
| author_facet |
Kiers, Ken Knighton, Tal London, David Russell, Matthew Szynkman, Alejandro Andrés Webster, Kari |
| author_role |
author |
| author2 |
Knighton, Tal London, David Russell, Matthew Szynkman, Alejandro Andrés Webster, Kari |
| author2_role |
author author author author author |
| dc.subject.none.fl_str_mv |
Física Ciencias Exactas flavor changing neutral current New physics Nueva física |
| topic |
Física Ciencias Exactas flavor changing neutral current New physics Nueva física |
| dc.description.none.fl_txt_mv |
We consider new-physics (NP) contributions to the decay t→bb̄c. We parametrize the NP couplings by an effective Lagrangian consisting of 10 Lorentz structures. We show that the presence of NP can be detected through the measurement of the partial width. A partial identification of the NP can be achieved through the measurements of a forward-backward-like asymmetry, a top-quark-spin-dependent asymmetry, the partial-rate asymmetry, and a triple-product asymmetry. These observables, which vanish in the standard model, can all take values in the 10%-20% range in the presence of NP. Since |V tbVcb|VtsVcs|, most of our results also hold, with small changes, for t→ss̄c. Facultad de Ciencias Exactas |
| description |
We consider new-physics (NP) contributions to the decay t→bb̄c. We parametrize the NP couplings by an effective Lagrangian consisting of 10 Lorentz structures. We show that the presence of NP can be detected through the measurement of the partial width. A partial identification of the NP can be achieved through the measurements of a forward-backward-like asymmetry, a top-quark-spin-dependent asymmetry, the partial-rate asymmetry, and a triple-product asymmetry. These observables, which vanish in the standard model, can all take values in the 10%-20% range in the presence of NP. Since |V tbVcb|VtsVcs|, most of our results also hold, with small changes, for t→ss̄c. |
| publishDate |
2011 |
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2011-10-13 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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eng |
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