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Global fits of third family hypercharge models to neutral current B-anomalies and electroweak precision observables

Published version
Peer-reviewed

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Authors

Allanach, BC 
Camargo-Molina, JE 

Abstract

While it is known that third family hypercharge models can explain the neutral current Banomalies, it was hitherto unclear whether the ZZ 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 Banomalies. While the Standard Model is in tension with this combined data set with a pvalue of .00068, simple versions of the models (fitting two additional parameters each) provide much improved fits. The original Third Family Hypercharge Model, for example, has a pvalue of .065, i.e. Δχ2=6.5σ.

Description

Funder: Carl Tryggers Stiftelse för Vetenskaplig Forskning; doi: http://dx.doi.org/10.13039/501100002805; Grant(s): CTS 17:139

Keywords

hep-ph, hep-ph, hep-ex

Journal Title

European Physical Journal C

Conference Name

Journal ISSN

1434-6044
1434-6052

Volume Title

81

Publisher

Springer Science and Business Media LLC
Sponsorship
STFC (ST/T000694/1)
Science and Technology Facilities Council (ST/P000681/1)