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Physics Event Generators computational Complexity

Physics Asked by Alangri on December 14, 2020

The computational core of physics event generator is the code that numerically calculates,from first principles, the fully differential cross section $e$.

In general terms, a cross section $e$ represents events $N$_exp=$e$$L$,(collision event with a given ‘final state’) that are expected per unit "integrated luminosity "$L$ of the colliding beams (parameter that depends on their intensities and geometries,
and overall duration of data-taking time [1]).

Question 1. According to this description (… duration of data-taking time ), could we say that,the physics event generator is equivalent to a concurrent temporal planning problem [2]?.

A. If so,what is its Computational complexity?. I mean the current working Physics Event Generators; in large hadron collider LHC or in the future international linear collider.

B. If not so,what is the computational problem out there that could be equivalent to the Physics Event generator?.

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[1]. Challenges in Monte Carlo event generator software for High-Luminosity LHC. Report by The HSF Physics Event Generator WG · Andrea Valassi (editor)1 …

[2]. Complexity of Concurrent Temporal Planning.
Jussi Rintanen NICTA Ltd and the Australian National University Canberra, Australia

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