ROOT

ROOT
OC · CC BY-SA 3.0 · source
Name	ROOT
Developer	CERN
Initial release	1995
Latest release	6.28/00
Programming language	C++
Operating system	Linux, macOS, Microsoft Windows
License	LGPL

ROOT ROOT is a data analysis framework and set of tools widely used in experimental particle physics and related fields. It provides histogramming, fitting, statistical analysis, visualization, and I/O services tailored for large-scale datasets generated by detectors and simulations. Originating at a European laboratory for particle research, it integrates with compiled languages and interactive scripting to support research workflows in collider experiments, astrophysics, and nuclear physics.

Etymology and terminology

The name derives from computing jargon and mathematical terminology used by developers at CERN in the mid-1990s. Early documentation and talks at conferences such as the International Conference on Computing in High Energy and Nuclear Physics and workshops associated with the Large Hadron Collider framed the project in relation to existing toolkits like PAW (Physics Analysis Workstation) and procedural libraries developed at institutes including Fermilab and DESY. Key figures in the initial design discussed naming at meetings involving contributors from University of Geneva and Imperial College London.

Mathematical concepts

The framework implements classes and algorithms for numerical linear algebra, probability distributions, and statistical inference used in research at collaborations like ATLAS, CMS, ALICE, and LHCb. It provides interfaces to optimization engines used in likelihood maximization and curve fitting, analogous to routines from MINUIT and numerical libraries employed at Brookhaven National Laboratory and SLAC National Accelerator Laboratory. Visualization modules support representations of functions, transforms, and multidimensional histograms often used in analyses for publications in journals such as Physical Review Letters and Journal of High Energy Physics.

Biology and botany

Adopted metaphorically in taxonomy and morphology studies, the term appears in nomenclatural discussions at institutions like the Royal Botanic Gardens, Kew and research groups associated with Smithsonian Institution publications. Root systems in plant physiology are subjects of fieldwork coordinated with universities such as University of Cambridge and University of California, Berkeley, and feature in collaborative projects funded by agencies like the National Science Foundation and the European Research Council. Comparative studies cite datasets deposited in repositories managed by organizations like Dryad and collections curated by the Natural History Museum, London.

Computing and software

As an analysis toolkit, the project integrates with C++ compilers used at computing centers such as the CERN OpenLab and grid infrastructures linked to EGI and Open Science Grid. It supports file formats and persistence mechanisms compatible with storage systems at facilities including Tier-0 centers and national computing centers like INFN CNAF. The software interfaces with collaborative code platforms and issue trackers typically hosted by organizations like GitHub and development workflows coordinated with working groups from experiments such as Belle II and DUNE. Training courses are offered in partnership with schools affiliated to European XFEL and summer programs at Brookhaven National Laboratory.

Cultural and symbolic uses

The concept of roots figures in art exhibitions at institutions such as the Tate Modern and installations commissioned by cultural councils like the British Council. Literary treatments appear in works shortlisted for prizes such as the Man Booker Prize and academic monographs from university presses including Oxford University Press and Cambridge University Press. Public science outreach events at venues like the Science Museum, London and festivals such as the Edinburgh Festival Fringe sometimes use botanical and genealogical metaphors to communicate concepts to audiences.

● See also

== CERN C++ MINUIT ATLAS CMS ALICE LHCb Fermilab DESY Brookhaven National Laboratory SLAC National Accelerator Laboratory Imperial College London University of Geneva University of Cambridge University of California, Berkeley Royal Botanic Gardens, Kew Smithsonian Institution Natural History Museum, London Dryad National Science Foundation European Research Council CERN OpenLab EGI Open Science Grid INFN CNAF GitHub Belle II DUNE European XFEL Tier-0 Tate Modern British Council Man Booker Prize Oxford University Press Cambridge University Press Science Museum, London Edinburgh Festival Fringe International Conference on Computing in High Energy and Nuclear Physics PAW (Physics Analysis Workstation