Probing a left-right symmetric model from a displaced shower at the CMS muon system
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| Format: | Preprint |
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2025
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| _version_ | 1866916945472782336 |
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| author | Liu, Wei Chen, Zixiang |
| author_facet | Liu, Wei Chen, Zixiang |
| contents | We study the potential collider discovery for the right-handed neutrinos (RHNs) in the minimal left-right symmetric model (LRSM). In this model, the RHNs can be either produced from the right-handed gauge boson $W_R^\pm$, or the scalar triplet $Δ$ decays. The RHNs can subsequently decay via the heavy $W_R^\pm$, making them potentially long-lived. In looking for such long-lived RHNs, a search for displaced shower at CMS muon system is reinterpreted for either the processes, $pp \rightarrow W_R^\pm \rightarrow \ell^\pm N$ or $pp \rightarrow Δ\rightarrow N N$. From the former process, we exclude $M_{W_R} \lesssim 3.6$ TeV using current CMS data, or $\lesssim 8.0$ TeV at the future HL-LHC. For the $pp \rightarrow Δ\rightarrow N N$ process, HL-LHC is able to probe much larger parameter space as long as the proper decay length of the RHNs, 0.01 m $ \lesssim L_0 \lesssim$ 1 m. This implies that the displaced shower searches are able to explore the parameter space of the LRSM which have not been excluded yet. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2503_22112 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Probing a left-right symmetric model from a displaced shower at the CMS muon system Liu, Wei Chen, Zixiang High Energy Physics - Phenomenology We study the potential collider discovery for the right-handed neutrinos (RHNs) in the minimal left-right symmetric model (LRSM). In this model, the RHNs can be either produced from the right-handed gauge boson $W_R^\pm$, or the scalar triplet $Δ$ decays. The RHNs can subsequently decay via the heavy $W_R^\pm$, making them potentially long-lived. In looking for such long-lived RHNs, a search for displaced shower at CMS muon system is reinterpreted for either the processes, $pp \rightarrow W_R^\pm \rightarrow \ell^\pm N$ or $pp \rightarrow Δ\rightarrow N N$. From the former process, we exclude $M_{W_R} \lesssim 3.6$ TeV using current CMS data, or $\lesssim 8.0$ TeV at the future HL-LHC. For the $pp \rightarrow Δ\rightarrow N N$ process, HL-LHC is able to probe much larger parameter space as long as the proper decay length of the RHNs, 0.01 m $ \lesssim L_0 \lesssim$ 1 m. This implies that the displaced shower searches are able to explore the parameter space of the LRSM which have not been excluded yet. |
| title | Probing a left-right symmetric model from a displaced shower at the CMS muon system |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2503.22112 |