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

Subtraction schemes provide a systematic way to compute fully-differentialcross sections beyond the leading order in the strong coupling constant. Thesemethods make singular real-emission corrections integrable in phase space bythe addition of suitable counterterms. Such counterterms may be defined usingmomentum mappings, which are parametrisations of the phase space that factorisethe variables that describe the particles becoming unresolved in some infraredor collinear limit from the variables that describe an on-shell phase space forthe resolved particles. In this work, we review existing momentum mappings in aunified framework and introduce new ones for final-collinear and softcounterterms. The new mappings work in the presence of massive particles andwith an arbitrary number of soft particles or of clusters of collinearparticles, making them fit for subtraction methods at any order in perturbationtheory. The new mapping for final-collinear counterterms is also used toelucidate relations among existing final-collinear mappings.

Momentum mappings for subtractions at higher orders in QCD