Abstract
We reexamine anomaly free U(1) extensions of the standard model in the light of LHC Drell-Yan data, constraints from unitarity, and neutrino-electron scattering to put model-independent bounds in the parameter space populated by \(M_{Z^\prime }\), the Z-\(Z^\prime \) mixing angle (\(\alpha _z\)), and the extra U(1) effective gauge coupling (\(g_x^\prime \)). We propose a formalism where any model dependence is absorbed into these three parameters.
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Notes
- 1.
See [3] for a similar analysis using the di-\(\tau \) final state.
- 2.
What constitutes an acceptable width of a heavy particle, or how far the narrow width approximation holds good can be a matter of discussion and hence we choose to veer on the conservative side, to illustrate what role the consideration of width might play in restricting the parameter space.
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Bandyopadhyay, T., Bhattacharyya, G., Das, D., Raychaudhuri, A. (2021). Notes on a \(Z'\). In: Behera, P.K., Bhatnagar, V., Shukla, P., Sinha, R. (eds) XXIII DAE High Energy Physics Symposium. DAEBRNS HEPS 2018 2018. Springer Proceedings in Physics, vol 261. Springer, Singapore. https://doi.org/10.1007/978-981-33-4408-2_25
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DOI: https://doi.org/10.1007/978-981-33-4408-2_25
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