Production-decay interferences at next-to-leading order in QCD for t-channel single-top-quark production

作者: P. Falgari , P. Mellor , A. Signer

DOI: 10.1103/PHYSREVD.82.054028

关键词:

摘要: We present a calculation of $\mathcal{O}({\ensuremath{\alpha}}_{s})$ contributions to the process $t$-channel single-top production and decay, which include virtual real corrections arising from interference decay subprocesses. The is organized as simultaneous expansion matrix elements in couplings ${\ensuremath{\alpha}}_{\mathrm{ew}}$, ${\ensuremath{\alpha}}_{s}$ virtuality intermediate top quark, $({p}_{t}^{2}\ensuremath{-}{m}_{t}^{2})/{m}_{t}^{2}\ensuremath{\sim}{\ensuremath{\Gamma}}_{t}/{m}_{t}$, extends earlier results beyond narrow-width approximation.

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