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FastSim: Fast simulation of the SuperB detector

Abstract : We have developed a parameterized (fast) simulation for detector optimization and physics reach studies of the proposed SuperB Flavor Factory at Frascati. A fast simulation allows studying rare signals and their backgrounds in the large data sample of about 10^11 B meson pair events anticipated over the lifetime of SuperB. Our simulation is fully compatible with the event generators and analysis framework of BaBar, allowing physics signal significance to be used as a metric when evaluating detector options. Detector components are modeled as thin sections of planes, cylinders, or cones. Thick objects are built by layering thin sections. Overall cylindrical symmetry is enforced by design, allowing closed-form stepping of linear and helical particle paths in most cases. Particle-material interactions are modeled using simplified cross-sections and formulas. Unstable particles are allowed to decay within the detector volume. Active detectors are modeled using parameterized response functions. Geometry and response parameters are configured using xml files with a custom-designed schema. Reconstruction algorithms adapted from BaBar are used to build tracks and clusters. Multiple sources of background signals can be merged with primary signals statistically using estimated spatial and temporal multi-hit resolutions. Pattern recognition errors are modeled statistically by randomly mis-assigning nearby tracking hits. Standard BaBar analysis tuples are used as an event output. Hadronic B meson pair events can be simulated at roughly 10Hz.
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Contributor : Sabine Starita <>
Submitted on : Thursday, November 18, 2010 - 4:06:13 PM
Last modification on : Wednesday, October 14, 2020 - 3:42:27 AM





R. Andreassen, N. Arnaud, D. Brown, L. Burmistrov, J. Carlson, et al.. FastSim: Fast simulation of the SuperB detector. 2010 Nuclear Science Symposium and Medical Imaging Conference, Oct 2010, Knoxville, United States. pp.322-326, ⟨10.1109/NSSMIC.2010.5873773⟩. ⟨in2p3-00537561⟩



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