Spin identification of the mono-Z$^{\prime}$ resonance in muon-pair production at the ILC with simulated electron-positron collisions at $\sqrt{s}$ = 500 GeV
| Autor: | Elgammal, S. |
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| Rok vydání: | 2024 |
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| Druh dokumentu: | Working Paper |
| Popis: | In this analysis, we investigate the angular distribution of low-mass dimuon pairs produced in simulated electron-positron collisions at the proposed International Linear Collider (ILC), which operates at a center of mass energy of 500 GeV and an integrated luminosity of 1000 fb\(^{-1}\). We focus on the cos\(\theta_{\text{CS}}\) variable, defined in the Collins-Soper frame. In the Standard Model, the production of low-mass dimuon pairs is primarily driven by the Drell-Yan process, which exhibits a pronounced forward-backward asymmetry. However, many scenarios beyond the Standard Model predict different shapes for the cos\(\theta_{\text{CS}}\) distribution. This angular distribution can be instrumental in distinguishing between these models in the event of excess observations beyond the Standard Model. We have used the mono-Z\(^{\prime}\) model to interpret the simulated data for our analysis. In the absence of any discoveries of new physics, we establish upper limits at the 95\% confidence level on the masses of various particles in the model, including the spin-1 \(Z^{\prime}\) boson, as well as fermionic dark matter. Comment: arXiv admin note: text overlap with arXiv:2311.13924 |
| Databáze: | arXiv |
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