Three-loop soft anomalous dimensions for top-quark production

Abstract

I present results for soft anomalous dimensions through three loops for several processes involving the production of top quarks. In particular, I discuss single-top and top-pair production. I also present some numerical results for double-differential distributions in tt production through approximate N 3 LO.

Three-loop soft anomalous dimensions in QCD

“…For associated tW production the soft anomalous dimension is a simple function [15,17,19]. At one loop…”

Three-loop soft anomalous dimensions for top-quark processes

“…The soft anomalous dimension for tW production has only one element (not a matrix). It is known at one loop [7,9], two-loops [9], and three loops [11]. The three-loop result is [11]…”

“…A recent review of calculations of cusp and soft anomalous dimensions for many processes can be found in Ref. [3] (see also [4][5][6] for the cusp, [7][8][9][10][11] for single top, and [1,12] for t t).…”

Search for charginos and neutralinos in final states with two boosted hadronically decaying bosons and missing transverse momentum in pp collisions at s=13 TeV with

“…The cross sections of singletop-quark t-and s-channel production are calculated using the HATHOR 2.1 program [108,109], while the Wt-channel calculation followed the prescriptions from Refs. [110,111]. The VV and t t þ W=Z samples are normalized to the cross sections calculated at NLO [112][113][114].…”