Investigation of neutrino electromagnetic properties at muon antimuon collider
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, cilt.880, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 880
- Basım Tarihi: 2026
- Doi Numarası: 10.1016/j.physletb.2026.140870
- Dergi Adı: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, INSPEC, MathSciNet, zbMATH, Directory of Open Access Journals, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO)
- Anahtar Kelimeler: Anomalous neutrino couplings, Muon collider, Neutrino-two-photon interactions, Physics beyond the standard model
- Ankara Üniversitesi Adresli: Evet
Özet
In this study, non-standard νν¯γγ interactions in future high-energy muon colliders have been investigated within the framework of a model-independent effective field theory approach via μ−γ→μ−νν¯ process where the initial photon is considered as the Weizsäcker–Williams equivalent photon. The anomalous neutrino-two-photon interaction was parametrically defined using dimension-7 effective operators. To simulate the signal and background events, the effective Lagrangian was converted into a UFO model using FeynRules and imported into MadGraph5_aMC@NLO, where the parton-level calculations were performed. Parton showering and hadronization were simulated using PYTHIA 8. For the detector effects and the reconstruction of the final state particles, the Delphes3 fast simulation program and the Madanalysis5 analysis framework were employed. Optimized selection criteria were implemented for muon colliders operating at center-of-mass energies of 3, 10, and 30 TeV. Sensitivity limits on the anomalous coupling parameter were derived using the Asimov significance formalism, including the effects of systematic uncertainties. Assuming a 10 % systematic uncertainty, the best projected 5 σ discovery limit is obtained at s=30 TeV with an integrated luminosity of 90 ab−1, corresponding to an improvement of about 15 orders of magnitude over the existing LEP bound from the rare Z→νν¯γγ decay. These results demonstrate the exceptional potential of future muon colliders to probe anomalous neutrino-two-photon interactions.