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dc.date.accessioned 2019-11-04T13:34:17Z
dc.date.available 2019-11-04T13:34:17Z
dc.date.issued 2011-10-13
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/84731
dc.description.abstract 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. en
dc.language en es
dc.subject flavor changing neutral current es
dc.subject New physics es
dc.subject Nueva física es
dc.title Using t→bb̄c to search for new physics en
dc.type Articulo es
sedici.identifier.other https://doi.org/10.1103/PhysRevD.84.074018 es
sedici.identifier.issn 1550-7998 es
sedici.creator.person Kiers, Ken es
sedici.creator.person Knighton, Tal es
sedici.creator.person London, David es
sedici.creator.person Russell, Matthew es
sedici.creator.person Szynkman, Alejandro Andrés es
sedici.creator.person Webster, Kari es
sedici.subject.materias Física es
sedici.subject.materias Ciencias Exactas es
sedici.description.fulltext true es
mods.originInfo.place Facultad de Ciencias Exactas es
sedici.subtype Articulo es
sedici.rights.license Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
sedici.rights.uri http://creativecommons.org/licenses/by-nc-sa/4.0/
sedici.description.peerReview peer-review es
sedici.relation.journalTitle Physical Review D - Particles, Fields, Gravitation and Cosmology es
sedici.relation.journalVolumeAndIssue vol. 84, no. 7 es
sedici.rights.sherpa * Color: verde* Pre-print del autor: si* Post-print del autor: si* Versión de editor/PDF:si* Condiciones:>>On author's personal website, employer's website or institutional repository>>Institutional repository must not be shared with other institutions>>La versión de editor/PDF puede utilizarse>>Se requiere enlace a la versión de editor>>El copyright del editor y la fuente de publicación deben reconocerse con la cita* Link a Sherpa: http://sherpa.ac.uk/romeo/issn/1550-7998/es/


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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) Excepto donde se diga explícitamente, este item se publica bajo la siguiente licencia Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)