Efficient phase-space generation for hadron collider event simulation
Enrico Bothmann, J. T. Childers, Walter T. Giele, Florian Herren, Stefan Höche, Joshua Isaacson, Max Knobbe, R. Wang
Abstract
We present a simple yet efficient algorithm for phase-space integration at hadron colliders. Individual mappings consist of a single t-channel combined with any number of s-channel decays, and are constructed using diagrammatic information. The factorial growth in the number of channels is tamed by providing an option to limit the number of s-channel topologies. We provide a publicly available, parallelized code in C++ and test its performance in typical LHC scenarios.
Topics & Concepts
Large Hadron ColliderDiagrammatic reasoningChannel (broadcasting)Limit (mathematics)Particle physicsComputer scienceSimple (philosophy)Phase spaceNetwork topologyEvent (particle physics)FactorialPhysicsCode (set theory)Topology (electrical circuits)MathematicsSet (abstract data type)Programming languageOperating systemCombinatoricsTelecommunicationsPhilosophyThermodynamicsEpistemologyQuantum mechanicsMathematical analysisParticle physics theoretical and experimental studiesAdvanced Data Storage TechnologiesHigh-Energy Particle Collisions Research