Flavor-changing top quark rare decays in the Bestest Little Higgs Model
Abstract This paper investigates rare flavor-changing decays of the top quark in the Bestest Little Higgs Model (BLHM). As a result, flavor-changing phenomena are introduced in the BLHM for the first time. In this study, we incorporate new flavor mixing terms between the light quarks of the Standard...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-11-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-023-12264-6 |
| _version_ | 1797233367128735744 |
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| author | T. Cisneros-Pérez M. A. Hernández-Ruíz A. Gutiérrez-Rodríguez E. Cruz-Albaro |
| author_facet | T. Cisneros-Pérez M. A. Hernández-Ruíz A. Gutiérrez-Rodríguez E. Cruz-Albaro |
| author_sort | T. Cisneros-Pérez |
| collection | DOAJ |
| description | Abstract This paper investigates rare flavor-changing decays of the top quark in the Bestest Little Higgs Model (BLHM). As a result, flavor-changing phenomena are introduced in the BLHM for the first time. In this study, we incorporate new flavor mixing terms between the light quarks of the Standard Model (SM) and the fermions and bosons of the BLHM. We compute the one-loop contributions from the heavy quark (B) and the heavy bosons $$(W^{\prime \pm }, \phi ^{\pm }, \eta ^{\pm },H^{\pm })$$ ( W ′ ± , ϕ ± , η ± , H ± ) . Our findings demonstrate that the branching ratios of decays $$t\rightarrow qV$$ t → q V and $$t\rightarrow qh^0$$ t → q h 0 , where $$q=u,c$$ q = u , c and $$V=Z, \gamma , g $$ V = Z , γ , g , can reach larger branching ratios compared to their counterparts in the SM, except for the gluon case. Moreover, we observe that the processes with the highest sensitivity are $$Br(t\rightarrow cZ)\sim 10^{-5}$$ B r ( t → c Z ) ∼ 10 - 5 , $$Br(t\rightarrow c\gamma )\sim 10^{-6}$$ B r ( t → c γ ) ∼ 10 - 6 and $$Br(t \rightarrow ch^0) \sim 10^{-8}$$ B r ( t → c h 0 ) ∼ 10 - 8 within the appropriate parameter space. |
| first_indexed | 2024-03-09T05:28:55Z |
| format | Article |
| id | doaj.art-0678f095ca244a9eb1fa1387168a1733 |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-04-24T16:15:02Z |
| publishDate | 2023-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-0678f095ca244a9eb1fa1387168a17332024-03-31T11:29:54ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522023-11-01831111310.1140/epjc/s10052-023-12264-6Flavor-changing top quark rare decays in the Bestest Little Higgs ModelT. Cisneros-Pérez0M. A. Hernández-Ruíz1A. Gutiérrez-Rodríguez2E. Cruz-Albaro3Unidad Académica de Ciencias Químicas, Universidad Autónoma de ZacatecasUnidad Académica de Ciencias Químicas, Universidad Autónoma de ZacatecasFacultad de Física, Universidad Autónoma de ZacatecasFacultad de Física, Universidad Autónoma de ZacatecasAbstract This paper investigates rare flavor-changing decays of the top quark in the Bestest Little Higgs Model (BLHM). As a result, flavor-changing phenomena are introduced in the BLHM for the first time. In this study, we incorporate new flavor mixing terms between the light quarks of the Standard Model (SM) and the fermions and bosons of the BLHM. We compute the one-loop contributions from the heavy quark (B) and the heavy bosons $$(W^{\prime \pm }, \phi ^{\pm }, \eta ^{\pm },H^{\pm })$$ ( W ′ ± , ϕ ± , η ± , H ± ) . Our findings demonstrate that the branching ratios of decays $$t\rightarrow qV$$ t → q V and $$t\rightarrow qh^0$$ t → q h 0 , where $$q=u,c$$ q = u , c and $$V=Z, \gamma , g $$ V = Z , γ , g , can reach larger branching ratios compared to their counterparts in the SM, except for the gluon case. Moreover, we observe that the processes with the highest sensitivity are $$Br(t\rightarrow cZ)\sim 10^{-5}$$ B r ( t → c Z ) ∼ 10 - 5 , $$Br(t\rightarrow c\gamma )\sim 10^{-6}$$ B r ( t → c γ ) ∼ 10 - 6 and $$Br(t \rightarrow ch^0) \sim 10^{-8}$$ B r ( t → c h 0 ) ∼ 10 - 8 within the appropriate parameter space.https://doi.org/10.1140/epjc/s10052-023-12264-6 |
| spellingShingle | T. Cisneros-Pérez M. A. Hernández-Ruíz A. Gutiérrez-Rodríguez E. Cruz-Albaro Flavor-changing top quark rare decays in the Bestest Little Higgs Model European Physical Journal C: Particles and Fields |
| title | Flavor-changing top quark rare decays in the Bestest Little Higgs Model |
| title_full | Flavor-changing top quark rare decays in the Bestest Little Higgs Model |
| title_fullStr | Flavor-changing top quark rare decays in the Bestest Little Higgs Model |
| title_full_unstemmed | Flavor-changing top quark rare decays in the Bestest Little Higgs Model |
| title_short | Flavor-changing top quark rare decays in the Bestest Little Higgs Model |
| title_sort | flavor changing top quark rare decays in the bestest little higgs model |
| url | https://doi.org/10.1140/epjc/s10052-023-12264-6 |
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