NLO Semi-inclusive Drell-Yan cross-section in Quantum ChromoDynamics as   a Factorization Analyzer
  We evaluate in perturbative QCD the semi-inclusive Drell-Yan cross-section for the production of a single hadron accompaining the lepton pair. We demonstrate to one loop level a collinear factorization formula within the fracture functions approach. We propose such a process as a factorization analyzer in hadronic collisions. Phenomenological implications at the hadron colliders are briefly discussed. 
Federico A. Ceccopieri, Luca Trentadue (Parma U. & INFN, Parma)