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 Plus annual

Presents the access of premium content as premium feature

Premium Content

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 annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We study the fusion processes $W^-W^+\to t\bar t$ and $ZZ\to t\bar t$observable at a future $e^-e^+$ collider and we discuss their sensitivity to an$Htt$ form factor which may be due to compositeness, in particular when the $H$and the top quark have common constituents. We make an amplitude analysis andillustrate which helicity amplitudes and cross sections for specific final$t\bar t$ polarizations are especially sensitive to this form factor.

Higgs boson form factor effects in $t\bar t$ production by $W^-W^+$ and $ZZ$ fusion