2018/10/31 by D. Müller, M. Clemencic, G. Corti +1 · 76 citations
Mathematics · Physics and Astronomy · #Computer science #Detector #Event (particle physics) #High-Energy Particle Collisions Research #Large Hadron Collider #Mathematics #Multiplicity (mathematics) #Nuclear physics #Optics #Particle Detector Development and Performance #Particle physics #Particle physics theoretical and experimental studies #Physics #SIGNAL (programming language) #Simulation software #Software #hep-ex
paper · pdf · doi:10.1140/epjc/s10052-018-6469-6
published in The European Physical Journal C 78(12), 1009 (Springer Science+Business Media)
openalex created_date 2018/10/26 · openalex publication_date 2018/12/01 · arxiv created 2018/12/18 · arxiv updated 2018/12/19 · openalex updated_date 2026/08/05
With the steady increase in the precision of flavour physics measurements collected during LHC Run 2, the LHCb experiment requires simulated data samples of larger and larger sizes to study the detector response in detail. The simulation of the detector response is the main contribution to the time needed to simulate full events. This time scales linearly with the particle multiplicity. Of the dozens of particles present in the simulation only the few participating in the signal decay under study are of interest, while all remaining particles mainly affect the resolutions and efficiencies of the detector. This paper presents a novel development for the LHCb simulation software which re-uses the rest of the event from previously simulated events. This approach achieves an order of magnitude increase in speed and the same quality compared to the nominal simulation.