Global fits of third family hypercharge models to neutral current B-anomalies and electroweak precision observables
Allanach, B. C.
Camargo-Molina, J. Eliel
The European Physical Journal C
Springer Berlin Heidelberg
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Allanach, B. C., Camargo-Molina, J. E., & Davighi, J. (2021). Global fits of third family hypercharge models to neutral current B-anomalies and electroweak precision observables. The European Physical Journal C, 81 (8) https://doi.org/10.1140/epjc/s10052-021-09377-1
Funder: Carl Tryggers Stiftelse för Vetenskaplig Forskning; doi: http://dx.doi.org/10.13039/501100002805; Grant(s): CTS 17:139
Abstract: While it is known that third family hypercharge models can explain the neutral current B-anomalies, it was hitherto unclear whether the Z-Z′ mixing predicted by such models could simultaneously fit electroweak precision observables. Here, we perform global fits of several third family hypercharge models to a combination of electroweak data and those data pertinent to the neutral current B-anomalies. While the Standard Model is in tension with this combined data set with a p-value of .0007, simple versions of the models (fitting two additional parameters each) provide much improved fits. The original Third Family Hypercharge Model, for example, has a p-value of .065, with Δχ2=6.5σ.
Regular Article - Theoretical Physics
Science and Technology Facilities Council (ST/P000681/1, ST/T000694/1)
External DOI: https://doi.org/10.1140/epjc/s10052-021-09377-1
This record's URL: https://www.repository.cam.ac.uk/handle/1810/329085