Probing Anomalous Top-Quark Couplings Induced by Dim.6 Operators at Photon Colliders

Possible anomalous top-quark couplings induced by SU(2) x U(1) gauge-invariant dimension-6 effective operators were studied in the process of t t-bar productions and decays at polarized gamma gamma colliders. Two CP-violating asymmetries, a linear-polarization asymmetry and a circular-polarization a...

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Detalles Bibliográficos
Autores principales: Grzadkowski, Bohdan, Hioki, Zenro, Ohkuma, Kazumasa, Wudka, Jose
Lenguaje:eng
Publicado: 2003
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/j.nuclphysb.2004.04.006
http://cds.cern.ch/record/676843
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author Grzadkowski, Bohdan
Hioki, Zenro
Ohkuma, Kazumasa
Wudka, Jose
author_facet Grzadkowski, Bohdan
Hioki, Zenro
Ohkuma, Kazumasa
Wudka, Jose
author_sort Grzadkowski, Bohdan
collection CERN
description Possible anomalous top-quark couplings induced by SU(2) x U(1) gauge-invariant dimension-6 effective operators were studied in the process of t t-bar productions and decays at polarized gamma gamma colliders. Two CP-violating asymmetries, a linear-polarization asymmetry and a circular-polarization asymmetry, were computed including both non-standard [t t-bar gamma] and [gamma gamma H] couplings. An optimal-observable analysis for the process gamma gamma --> t t-bar --> l^{+-} ... was performed in order to estimate the precision for determination of all relevant non-standard couplings, including the anomalous tbW coupling.
id cern-676843
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2003
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spelling cern-6768432023-03-20T10:34:58Zdoi:10.1016/j.nuclphysb.2004.04.006http://cds.cern.ch/record/676843engGrzadkowski, BohdanHioki, ZenroOhkuma, KazumasaWudka, JoseProbing Anomalous Top-Quark Couplings Induced by Dim.6 Operators at Photon CollidersParticle Physics - PhenomenologyPossible anomalous top-quark couplings induced by SU(2) x U(1) gauge-invariant dimension-6 effective operators were studied in the process of t t-bar productions and decays at polarized gamma gamma colliders. Two CP-violating asymmetries, a linear-polarization asymmetry and a circular-polarization asymmetry, were computed including both non-standard [t t-bar gamma] and [gamma gamma H] couplings. An optimal-observable analysis for the process gamma gamma --> t t-bar --> l^{+-} ... was performed in order to estimate the precision for determination of all relevant non-standard couplings, including the anomalous tbW coupling.Possible anomalous top-quark couplings induced by SU (2)× U (1) gauge-invariant dimension-6 effective operators were studied in the process of t t ̄ productions and decays at polarized γγ colliders. Two CP -violating asymmetries, a linear-polarization asymmetry and a circular-polarization asymmetry, were computed including both non-standard t t ̄ γ and γγH couplings. An optimal-observable analysis for the process γγ→t t ̄ →l ± ⋯ was performed in order to estimate the precision for determination of all relevant non-standard couplings, including the anomalous tbW coupling.Possible anomalous top-quark couplings induced by SU(2) x U(1) gauge-invariant dimension-6 effective operators were studied in the process of t t-bar productions and decays at polarized gamma gamma colliders. Two CP-violating asymmetries, a linear-polarization asymmetry and a circular-polarization asymmetry, were computed including both non-standard [t t-bar gamma] and [gamma gamma H] couplings. An optimal-observable analysis for the process gamma gamma --> t t-bar --> l^{+-} ... was performed in order to estimate the precision for determination of all relevant non-standard couplings, including the anomalous tbW coupling.hep-ph/0310159IFT-25-03FUT-03-02UCRHEP-T364FUT-2003-02IFT-2003-25UCRHEP-T-364oai:cds.cern.ch:6768432003-10-14
spellingShingle Particle Physics - Phenomenology
Grzadkowski, Bohdan
Hioki, Zenro
Ohkuma, Kazumasa
Wudka, Jose
Probing Anomalous Top-Quark Couplings Induced by Dim.6 Operators at Photon Colliders
title Probing Anomalous Top-Quark Couplings Induced by Dim.6 Operators at Photon Colliders
title_full Probing Anomalous Top-Quark Couplings Induced by Dim.6 Operators at Photon Colliders
title_fullStr Probing Anomalous Top-Quark Couplings Induced by Dim.6 Operators at Photon Colliders
title_full_unstemmed Probing Anomalous Top-Quark Couplings Induced by Dim.6 Operators at Photon Colliders
title_short Probing Anomalous Top-Quark Couplings Induced by Dim.6 Operators at Photon Colliders
title_sort probing anomalous top-quark couplings induced by dim.6 operators at photon colliders
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/j.nuclphysb.2004.04.006
http://cds.cern.ch/record/676843
work_keys_str_mv AT grzadkowskibohdan probinganomaloustopquarkcouplingsinducedbydim6operatorsatphotoncolliders
AT hiokizenro probinganomaloustopquarkcouplingsinducedbydim6operatorsatphotoncolliders
AT ohkumakazumasa probinganomaloustopquarkcouplingsinducedbydim6operatorsatphotoncolliders
AT wudkajose probinganomaloustopquarkcouplingsinducedbydim6operatorsatphotoncolliders

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