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ROOT enables statistically sound scientific analyses and visualization of large amounts of data: today, more than 1 exabyte (1,000,000,000 gigabyte) are stored in ROOT files. The Higgs was found with ROOT!

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As high-performance software, ROOT is written mainly in C++. You can use it on Linux, macOS, or Windows; it works out of the box. ROOT is open source: use it freely, modify it, contribute to it!

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ROOT comes with an incredible C++ interpreter, ideal for fast prototyping. Don’t like C++? ROOT integrates super-smoothly with Python thanks to its unique dynamic and powerful Python ⇄ C++ binding. Or what about using ROOT in a Jupyter notebook?

ROOT at CHEP 2024 (04 Nov 2024)

In October 2024, the software and computing community in high-energy and nuclear physics met in Krakow at the CHEP24 conference. The event featured a rich scientific program in a great location.

 New color schemes (08 Oct 2024)

Choosing an appropriate color scheme is essential for making results easy to understand and interpret. Factors like colorblindness and converting colors to grayscale for publications can impact accessibility. Furthermore, results should be aesthetically pleasing. The following three color schemes, recommended by M. Petroff in arXiv:2107.02270v2 and available on GitHub under the MIT License, meet these criteria.

 New ROOT student course for self-study (28 Aug 2024)

The academic year is about to start, so why not learn ROOT with us?

During the summer, the ROOT team has organized a number of ROOT Summer Student courses at CERN and two HSF/IRIS-HEP Python for Analysis Trainings online, meaning the ROOT community has expanded by around 200 new students! And that is only the beginning; we think more students should have an opportunity to acquire the course material, this time in a self-study manner.

 RNTuple: Where are we now and what's next? (26 Jan 2024)

Hello, this is Florine from the ROOT team! Over the past year, I’ve been working as a technical student funded by ATLAS to evaluate and help further develop RNTuple. As you may already be aware, RNTuple [1] is currently being developed as the successor to TTree, and is projected to be used in Run 4. I imagine you might be wondering why there is a need for a completely new (TTree-incompatible) system, and what this looks like. That’s why in this blog post, I will try to answer this question, as well as give you an overview of the current status of RNTuple, what we’re still working on before its first production release (and what we will work on beyond this), and finally how you can already try it out!

 Interactive, web-based canvas is now the default in ROOT (05 Jun 2023)

After a long period of development and testing we decided to switch to the web-based TCanvas implementation by default in the ROOT master version. It has been present in the ROOT for a while (since 2017) and used already in the web-based TBrowser, which you have probably seen already.

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