English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

The question whether the Higgs boson is connected to additional CP violationis one of the driving forces behind precision studies at the Large HadronCollider. In this work, we investigate the CP structure of the top quark Yukawainteraction-one of the most prominent places for searching for NewPhysics-through Higgs boson loops in top quark pair production. We calculatethe electroweak corrections including arbitrary CP mixtures atnext-to-leading-order in the Standard Model Effective Field Theory. Thisapproach of probing Higgs boson degrees of freedom relies on the large$t\bar{t}$ cross section and the excellent perturbative control. In addition,we consider all direct probes with on-shell Higgs boson production inassociation with a single top quark or top quark pair. This allows us tocontrast loop sensitivity versus on-shell sensitivity in these fundamentallydifferent process dynamics. We find that loop sensitivity in $t\bar{t}$production and on-shell sensitivity in $t\bar{t}H$ and $tH$ providecomplementary handles over a wide range of parameter space.

Probing the CP structure of the top quark Yukawa coupling: Loop sensitivity vs. on-shell sensitivity