Speaker
Description
In this presentation, I will talk about the Multi-scale improved NLO (MINLO) method as an alternative to the standard fixed-order NLO approach. The MINLO method, which is now implemented in the HELAC-NLO framework, depends on an arbitrary choice of renormalization and factorization scales. This approach dynamically determines these scales based on the most probable branching histories and incorporates Sudakov form factors to resum large double logarithms that arise in processes with widely separated energy scales. I will present the differences between the two approaches through a comparative study of the full off-shell $pp \to t\bar{t}W^+ + \rm jets$ processes at NLO in QCD. Merging of the $pp \to t\bar{t}W^+ + \rm jets$ samples with up to 2 jets, that can improve the overall accuracy of the full off-shell $pp \to t\bar{t}W^+ + X$ predictions, will also be discussed.
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