New physics in $$\text {b} \rightarrow \text {s}$$ b → s transitions in the MF331 model
Abstract There are two sources that help to explain the $$\text {R}_\text {K}$$ R K , $$\text {R}_{\text {K}^*}$$ R K ∗ anomalies in the MF331 model. The first is non-LFUV couplings of the new neutral gauge boson $$\text {Z}^{\prime }$$ Z ′ with leptons, $$\text {g}^{\text {Z}^\prime }(e)\ne \text {...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-10-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-022-10916-7 |
| _version_ | 1811335185284726784 |
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| author | N. T. Duy P. N. Thu D. T. Huong |
| author_facet | N. T. Duy P. N. Thu D. T. Huong |
| author_sort | N. T. Duy |
| collection | DOAJ |
| description | Abstract There are two sources that help to explain the $$\text {R}_\text {K}$$ R K , $$\text {R}_{\text {K}^*}$$ R K ∗ anomalies in the MF331 model. The first is non-LFUV couplings of the new neutral gauge boson $$\text {Z}^{\prime }$$ Z ′ with leptons, $$\text {g}^{\text {Z}^\prime }(e)\ne \text {g}^{\text {Z}^\prime }(\mu ,\tau )$$ g Z ′ ( e ) ≠ g Z ′ ( μ , τ ) , which causes the $$\text {R}_\text {K}$$ R K , $$\text {R}_{\text {K}^*}$$ R K ∗ anomalies via $$\text {Z}^\prime $$ Z ′ -penguin diagrams involving newly charged gauge bosons $$\text {X}^{\pm }_{\mu }$$ X μ ± , and exotic U-quarks. The second is the contribution from the box diagram only for the first generation of leptons. We show that the penguin diagrams can not explain $$\text {R}_\text {K}$$ R K , $$\text {R}_{\text {K}^*}$$ R K ∗ anomalies, and that the box diagram is required. The experimental constraints for $$\text {R}_\text {K}$$ R K and $$\text {R}_{\text {K}^*}$$ R K ∗ result in new particle mass degeneracy. The contributions of NP to the branching ratios $$\text {Br}(\text {B}_{\text {s}}\rightarrow \mu ^+ \mu ^-), \text {Br}(\text {b}\rightarrow s \gamma )$$ Br ( B s → μ + μ - ) , Br ( b → s γ ) predict results that agree with the experimental limits in the allowed region of the NP scale. |
| first_indexed | 2024-04-13T17:20:25Z |
| format | Article |
| id | doaj.art-6355f9c5075b4dcbadc7c6359cc73e7a |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-04-13T17:20:25Z |
| publishDate | 2022-10-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-6355f9c5075b4dcbadc7c6359cc73e7a2022-12-22T02:38:00ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522022-10-01821011510.1140/epjc/s10052-022-10916-7New physics in $$\text {b} \rightarrow \text {s}$$ b → s transitions in the MF331 modelN. T. Duy0P. N. Thu1D. T. Huong2Institute of Physics, VASTGraduate University of Science and Technology, Vietnam Academy of Science and TechnologyInstitute of Physics, VASTAbstract There are two sources that help to explain the $$\text {R}_\text {K}$$ R K , $$\text {R}_{\text {K}^*}$$ R K ∗ anomalies in the MF331 model. The first is non-LFUV couplings of the new neutral gauge boson $$\text {Z}^{\prime }$$ Z ′ with leptons, $$\text {g}^{\text {Z}^\prime }(e)\ne \text {g}^{\text {Z}^\prime }(\mu ,\tau )$$ g Z ′ ( e ) ≠ g Z ′ ( μ , τ ) , which causes the $$\text {R}_\text {K}$$ R K , $$\text {R}_{\text {K}^*}$$ R K ∗ anomalies via $$\text {Z}^\prime $$ Z ′ -penguin diagrams involving newly charged gauge bosons $$\text {X}^{\pm }_{\mu }$$ X μ ± , and exotic U-quarks. The second is the contribution from the box diagram only for the first generation of leptons. We show that the penguin diagrams can not explain $$\text {R}_\text {K}$$ R K , $$\text {R}_{\text {K}^*}$$ R K ∗ anomalies, and that the box diagram is required. The experimental constraints for $$\text {R}_\text {K}$$ R K and $$\text {R}_{\text {K}^*}$$ R K ∗ result in new particle mass degeneracy. The contributions of NP to the branching ratios $$\text {Br}(\text {B}_{\text {s}}\rightarrow \mu ^+ \mu ^-), \text {Br}(\text {b}\rightarrow s \gamma )$$ Br ( B s → μ + μ - ) , Br ( b → s γ ) predict results that agree with the experimental limits in the allowed region of the NP scale.https://doi.org/10.1140/epjc/s10052-022-10916-7 |
| spellingShingle | N. T. Duy P. N. Thu D. T. Huong New physics in $$\text {b} \rightarrow \text {s}$$ b → s transitions in the MF331 model European Physical Journal C: Particles and Fields |
| title | New physics in $$\text {b} \rightarrow \text {s}$$ b → s transitions in the MF331 model |
| title_full | New physics in $$\text {b} \rightarrow \text {s}$$ b → s transitions in the MF331 model |
| title_fullStr | New physics in $$\text {b} \rightarrow \text {s}$$ b → s transitions in the MF331 model |
| title_full_unstemmed | New physics in $$\text {b} \rightarrow \text {s}$$ b → s transitions in the MF331 model |
| title_short | New physics in $$\text {b} \rightarrow \text {s}$$ b → s transitions in the MF331 model |
| title_sort | new physics in text b rightarrow text s b s transitions in the mf331 model |
| url | https://doi.org/10.1140/epjc/s10052-022-10916-7 |
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