Effective interaction scale of large $p_{T}$ hadron production beyond leading order in QCD

The scale dependance of large $p_{T}$ hadron production is investigated and analyzed in terms of double moments for qq $\to$ qX and qq $\to$ gX partonic subprocesses in the next-to-leading order. Calculated here qq $\to$ gX cross-section turns out to be small in comparison with quark fragmentation contribution and is shown not to influence the interaction scale extracted according to the fastest apparent convergence criterion