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| Main Authors: | , |
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| Format: | Preprint |
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2024
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| Online Access: | https://arxiv.org/abs/2408.10025 |
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| _version_ | 1866914302028414976 |
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| author | Giang, Bui Thi Ha Van Soa, Dang |
| author_facet | Giang, Bui Thi Ha Van Soa, Dang |
| contents | An attempt is made to present the effect of new physics in the exclusive decays of W boson at high energy colliders in the Randall-Sundrum (RS) model. By using Feynman diagram techniques we have evaluated the influence of the scalar unparticle, polarization and anomalous couplings on the exclusive W boson hadronic decays of $W^{\pm} \rightarrow π^{\pm}γ$, $W^{\pm} \rightarrow K^{\pm}γ$ and $W^{\pm} \rightarrow ρ^{\pm}γ$ at the high energy muon colliders in the RS model. The result shows that with fixed collision energies, the total cross-section for hadronic productions in the final state depends strongly on the parameters of the unparticle physics, muon beam polarizes and also anomalous couplings. With a center-of-mass energy of 10 TeV, the total cross-sections achieve the maximum value when the benchmark signal point as $(Λ_{U}, d_{U})$ $= (1 \text{TeV}, 1.9)$ and the polarization coefficient as $(P_{μ^{-}}, P_{μ^{+}} )= (1,1)$. The numerical evaluation shows that with the contribution of new physics in the RS model, the effect is greatly enhanced at high energy colliders. The statistical significance can reach $1σ- 7σ$ in case of using the W branching ratio at the experimental bounds of $\mathcal{O} (10^{-6})$. To clarify the contribution of new physics, we use a $χ^{2}$ analysis with systematic errors to determine the sensitivities of the new contributions. The result indicates that the sensitivities on the anomalous coupling $WWγ$ are much larger than that on the anomalous coupling $WW Z$ under the same conditions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_10025 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The contribution of new physics on the exclusive W boson hadronic decays in the final state at muon colliders in the Randall-Sundrum model Giang, Bui Thi Ha Van Soa, Dang High Energy Physics - Phenomenology An attempt is made to present the effect of new physics in the exclusive decays of W boson at high energy colliders in the Randall-Sundrum (RS) model. By using Feynman diagram techniques we have evaluated the influence of the scalar unparticle, polarization and anomalous couplings on the exclusive W boson hadronic decays of $W^{\pm} \rightarrow π^{\pm}γ$, $W^{\pm} \rightarrow K^{\pm}γ$ and $W^{\pm} \rightarrow ρ^{\pm}γ$ at the high energy muon colliders in the RS model. The result shows that with fixed collision energies, the total cross-section for hadronic productions in the final state depends strongly on the parameters of the unparticle physics, muon beam polarizes and also anomalous couplings. With a center-of-mass energy of 10 TeV, the total cross-sections achieve the maximum value when the benchmark signal point as $(Λ_{U}, d_{U})$ $= (1 \text{TeV}, 1.9)$ and the polarization coefficient as $(P_{μ^{-}}, P_{μ^{+}} )= (1,1)$. The numerical evaluation shows that with the contribution of new physics in the RS model, the effect is greatly enhanced at high energy colliders. The statistical significance can reach $1σ- 7σ$ in case of using the W branching ratio at the experimental bounds of $\mathcal{O} (10^{-6})$. To clarify the contribution of new physics, we use a $χ^{2}$ analysis with systematic errors to determine the sensitivities of the new contributions. The result indicates that the sensitivities on the anomalous coupling $WWγ$ are much larger than that on the anomalous coupling $WW Z$ under the same conditions. |
| title | The contribution of new physics on the exclusive W boson hadronic decays in the final state at muon colliders in the Randall-Sundrum model |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2408.10025 |