Low-energy constant L10 in a two-representation lattice theory

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

doi:10.1103/PhysRevD.103.074509

Low-energy constant L10 in a two-representation lattice theory

Maarten Golterman, William I. Jay, Ethan T. Neil, Yigal Shamir^*, Benjamin Svetitsky

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We calculate the low-energy constant L10 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 ζ which is similar to current estimates of this bound. Our result agrees with large-Nc scaling expectations, within large systematic uncertainties.

Original language	English
Article number	074509
Journal	Physical Review D
Volume	103
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevD.103.074509
State	Published - 21 Apr 2021

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10.1103/PhysRevD.103.074509

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abstract = "We calculate the low-energy constant L10 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 ζ which is similar to current estimates of this bound. Our result agrees with large-Nc scaling expectations, within large systematic uncertainties.",

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AU - Svetitsky, Benjamin

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AB - We calculate the low-energy constant L10 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 ζ which is similar to current estimates of this bound. Our result agrees with large-Nc scaling expectations, within large systematic uncertainties.

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Low-energy constant L10 in a two-representation lattice theory

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