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 present the extension of two general algorithms for the treatment ofinfrared singularities arising in electroweak corrections to decay processes atnext-to-leading order: the dipole subtraction formalism and the one-cutoffslicing method. The former is extended to the case of decay kinematics whichhas not been considered in the literature so far. The latter is generalized toproduction and decay processes with more than two charged particles, where new"surface" terms arise. Arbitrary patterns of massive and massless externalparticles are considered, including the treatment of infrared singularities indimensional or mass regularization. As an application of the two techniques wepresent the calculation of the next-to-leading-order QCD and electroweakcorrections to the top-quark decay width including all off-shell and decayeffects of intermediate W bosons. The result, e.g., represents a building blockof a future calculation of NLO electroweak effects to off-shell top-quark pair(WWbb) production. Moreover, this calculation can serve as the first steptowards an event generator for top-quark decays at next-to-leading orderaccuracy, which can be used to attach top-quark decays to complicatedmany-particle top-quark processes, such as for tt+H or tt+jets.

Techniques for the treatment of IR divergences in decay processes at NLO and application to the top-quark decay