Renormalization group running effects in $p$ $p$ $\rightarrow t \bar th$ in the SMEFT

We analyze the effects of renormalization group running of the Wilson coefficients in the SMEFT in the context of single Higgs production in association with a top-antitop pair, following the work presented in [Di Noi, Gröber, '23]. In particular, we analyze the differential cross section with respect to the Higgs trasnverse momentum. We extend the usual ${O}({\alpha_s})$ analysis including also the top Yukawa running effects, whose impact can be significant when large Wilson coefficients are considered. We employ a dynamical and a fixed renormalization scale with different set-ups for the Wilson coefficients, defined at the TeV scale. Additionally, we comment on the accuracy of the widely-used first leading-logarithm approximation.

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Publication Details

Published
2024-12-20
DOI
https://doi.org/10.22323/1.478.0324
Primary Topic
Quantum Chromodynamics and Particle Interactions
Type
article
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article

Renormalization group running effects in $p$ $p$ $\rightarrow t \bar th$ in the SMEFT

Stefano Di Noi
Quantum Chromodynamics and Particle Interactions
article

Renormalization group running effects in $p$ $p$ $\rightarrow t \bar th$ in the SMEFT

Stefano Di Noi
article en

Abstract

We analyze the effects of renormalization group running of the Wilson coefficients in the SMEFT in the context of single Higgs production in association with a top-antitop pair, following the work presented in [Di Noi, Gröber, '23]. In particular, we analyze the differential cross section with respect to the Higgs trasnverse momentum. We extend the usual ${O}({\alpha_s})$ analysis including also the top Yukawa running effects, whose impact can be significant when large Wilson coefficients are considered. We employ a dynamical and a fixed renormalization scale with different set-ups for the Wilson coefficients, defined at the TeV scale. Additionally, we comment on the accuracy of the widely-used first leading-logarithm approximation.

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Quantum Chromodynamics and Particle Interactions
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Renormalization group running effects in $p$ $p$ $\rightarrow t \bar th$ in the SMEFT — Stefano Di Noi · (2024) | TGRS Research Map | TGRS