Papers › Phase Space Sampling and Inference from Weighted Events with Autoregressive Flows
Phase Space Sampling and Inference from Weighted Events with Autoregressive Flows
Bob Stienen, Rob Verheyen
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We explore the use of autoregressive flows, a type of generative model with tractable likelihood, as a means of efficient generation of physical particle collider events. The usual maximum likelihood loss function is supplemented by an event weight, allowing for inference from event samples with variable, and even negative event weights. To illustrate the efficacy of the model, we perform experiments with leading-order top pair production events at an electron collider with importance sampling weights, and with next-to-leading-order top pair production events at the LHC that involve negative weights.
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