أعرض في EDS

Data-driven precision determination of the material budget in ALICE

التفاصيل البيبلوغرافية
العنوان: Data-driven precision determination of the material budget in ALICE
المؤلفون: Acharya, S., Basu, S., Christiansen, P., Hansen, J., Iversen, K.E., Matonoha, O., Nassirpour, A.F., Ohlson, A., Silvermyr, D., Staa, J., Vislavicius, V., Zugravel, S.C., Zurlo, N.
المصدر: Journal of Instrumentation eSSENCE: The e-Science Collaboration. 18(11)
مصطلحات موضوعية: Analysis and statistical methods, Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc), Large detector systems for particle and astroparticle physics, Particle tracking detectors, Budget control, Charged particles, Computer software, Hadrons, Uncertainty analysis, Analyse and statistical method, Astroparticle physics, Detector modeling, Detector modeling and simulation I (interaction of radiation with matter, interaction of photon with matter, interaction of hadron with matter, Detector simulations, Detector systems, Interaction of radiation with matter, Large detector system for particle and astroparticle physic, Large detectors, Model and simulation, Particle tracking, Particle tracking detector, Tracking detectors, Photons, Naturvetenskap, Fysik, Subatomär fysik, Natural Sciences, Physical Sciences, Subatomic Physics
الوصف: The knowledge of the material budget with a high precision is fundamental for measurements of direct photon production using the photon conversion method due to its direct impact on the total systematic uncertainty. Moreover, it influences many aspects of the charged-particle reconstruction performance. In this article, two procedures to determine data-driven corrections to the material-budget description in ALICE simulation software are developed. One is based on the precise knowledge of the gas composition in the Time Projection Chamber. The other is based on the robustness of the ratio between the produced number of photons and charged particles, to a large extent due to the approximate isospin symmetry in the number of produced neutral and charged pions. Both methods are applied to ALICE data allowing for a reduction of the overall material budget systematic uncertainty from 4.5% down to 2.5%. Using these methods, a locally correct material budget is also achieved. The two proposed methods are generic and can be applied to any experiment in a similar fashion. © 2023 CERN for the benefit of the Alice collaboration.
الوصول الحر: https://lup.lub.lu.se/record/36b42b87-c2e6-4cb0-8144-ac7cc5f24540Test
http://dx.doi.org/10.1088/1748-0221/18/11/P11032Test
قاعدة البيانات: SwePub
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