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arXiv · 2010.01920

Low-energy constant $L_{10}$ in a two-representation lattice theory

Maarten Golterman·William I. Jay·Ethan T. Neil·Yigal Shamir·Benjamin Svetitsky
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Abstract

We calculate the low-energy constant $L_{10}$ in a two-representation SU(4) lattice gauge theory that is close to a composite-Higgs model. From this we obtain the contribution of the new strong sector to the $S$ parameter. This leads to an upper bound on the vacuum misalignment parameter $ξ$ which is similar to current estimates of this bound. Our result agrees with large-$N_c$ scaling expectations, within large systematic uncertainties.

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Maarten Golterman, William I. Jay, Ethan T. Neil, Yigal Shamir, Benjamin Svetitsky. 2021-04-01. Low-energy constant $L_{10}$ in a two-representation lattice theory. https://doi.org/10.1103/physrevd.103.074509

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