Electroweak limits on general new vector bosons

By F. Águila, J. Blas, M. Pérez-Victoria. 2010

184 citations recorded by the source corpus.

We study extensions of the Standard Model with general new vector bosons. The full Standard Model gauge symmetry is used to classify the extra vectors and constrain their couplings. We derive the corresponding effective Lagrangian, valid at energies lower than the mass of the extra vectors, and use it to extract limits from electroweak precision observables, including LEP 2 data. We consider both universal and nonuniversal couplings to fermions. We study the interplay of several extra vectors, which can have the effect of opening new regions in parameter space. In particular, it allows to explain the anomaly in the bottom forward-backward asymmetry with perturbative couplings. Finally, we analyze quantitatively the implications for the Higgs mass.

Subfields: Artificial Intelligence, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/f119dbc959e10b7667afbb9d80ea7e586c3e02fa

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In Nuclear and High Energy Physics

1. J. Barry
2. W. Rodejohann
3. Z. Xing
4. J. Suhonen
5. P. S. Bhupal Dev
6. F. Deppisch

Citations in the corpus

• Lepton number and flavour violation in TeV-scale left-right symmetric theories with large left-right mixing (2013, background): “The current limits [45, 48] on the neutral gauge boson parameters are mZ′ > 1.”