There are many developers and people with programming skills hanging around on Steem and in particular around [**Utopian.io**](https://steemit.com/@utopian-io). Three months ago, I asked these people a very simple question. **Would they be interested in contributing to state-of-the-art research in particle physics**?

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This idea was received very positively, and about 10 people answered that they want to try and come on board. This was sufficient to me to start a project of [**allowing Steem contributions to my own research work**](https://madanalysis.irmp.ucl.ac.be/). The main topic is utilizing the results found by the [**Large Hadron Collider**](https://home.cern/topics/large-hadron-collider) (LHC) at [**CERN**](https://home.cern/) in the best possible way through the development of **an open source platform for the reinterpretation of LHC results**. We are now three months later and I'm here to summarize what has been accomplished so far. I will briefly review the grand goal of this project, the material on particle physics I provided (to help understanding the context) and how to tackle this with programming. The amazing fact is [**that a public platform that I am co-developing**](https://madanalysis.irmp.ucl.ac.be/), used by particle physicists from all over the world, now **includes contributions from Steem**. ___ ## UTILIZING THE RESULTS OF THE LARGE HADRON COLLIDER ___ This is an exciting time for particle physics. Its [**Standard Model**](https://steemit.com/steemstem/@lemouth/some-thoughts-about-stem-on-steem-bonus-a-complete-introduction-to-particle-physics) is now complete (in terms of particle discoveries), and data seems to confirm it very strongly.

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However, it is clear that the Standard Model is [**not the end of the story**](https://steemit.com/science/@lemouth/why-going-beyond-the-standard-model-of-particle-physics). There must be something behind it. The LHC experimental collaborations are therefore undertaking many searches for the new phenomena predicted by the various theories proposed to extend the Standard Model. The only problem is that there is a plethora of possible variants of a large number of theories, and not all of them can be tested experimentally due to limited human resources. For this reason, platforms on which anyone can test the model of physics of his/her dream are very important. Some collaborators and myself started to develop an open source platform (named [**MadAnalysis 5**](https://madanalysis.irmp.ucl.ac.be/)) to do just that several years ago. The problem is that, in order to use it for the reinterpretation of the results of the LHC, experimental analyses must be reimplemented one by one (at least for now). **This is where Steem and Utopian.io come into the game!** ___ ## PARTICLE PHYSICS ON STEEM AND UTOPIAN.IO ___

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Using Steem and Utopian to contribute to state-of-the-art research is not easy, for the simple reason that even if one is skilled in programming, **one needs to understand what to program**. This, of course, is where I can help. Through a series of posts accompanied by exercises (that have been rewarded when done), I reviewed the objects that are observed in a typical LHC detector, how analyses make use of them, and how this is implemented in the MadAnalysis 5 framework. In detail, we have: - [**Installation instructions**](https://steemit.com/utopian-io/@lemouth/towards-an-utopian-contribution-to-particle-physics-the-roadmap-and-how-to-get-started) with generalities on the MadAnalysis 5 framework and its installation procedure [**from GitHub**](https://github.com/BFuks/madanalysis-utopian). - Information on some of the objects observed in a detector ([**photons, electron and muons**](https://steemit.com/utopian-io/@lemouth/particle-physics-utopian-detecting-particles-at-colliders-and-implementing-this-on-a-computer)) along with a basic programming exercise in the MadAnalysis 5 framework. - Information on the [**properties of the reconstructed objects**](https://steemit.com/utopian-io/@lemouth/particle-physics-utopian-implementing-an-lhc-analysis-on-a-computer-the-physics-objects) and introduction of the concept of jets of strongly-interacting particles. All of this with an exercise addressing a real [**ATLAS search**](https://arxiv.org/abs/1711.11520) for a theory called [**supersymmetry**](https://steemit.com/science/@lemouth/new-phenomena-in-particle-physics-searching-for-our-dear-susy-aka-supersymmetry). - [**Histogramming and object isolation**](https://steemit.com/utopian-io/@lemouth/particle-physics-utopian-io-objects-isolation-histogramming-and-a-first-task-request). Or, in other words, how to focus solely on quality objects reconstructed in a detector and make useful plots. Here, the exercise focused on a real [**CMS search**](https://arxiv.org/abs/1706.03794) for [**dark matter**](https://steemit.com/science/@lemouth/a-hitchhiker-guide-to-the-quest-for-dark-matter). - Last but not least, I have focused on [**analysis strategies**](https://steemit.com/utopian-io/@lemouth/particle-physics-utopian-io-designing-an-lhc-search-strategy-for-unraveling-new-phenomena), and the concepts of selection cuts and signal regions. **Now, everyone is correctly equipped to tackle the real deal!** ___ ## CURRENT OUTCOME OF THE PROJECT ___ Although task requests have not been posted yet, five Steemians (**@crokkon, @effofex, @irelandscape** and **@mactro**) strongly contributed to the project so far and solved most of the exercises. Three **histogramming modules** ([**here**](https://steemit.com/utopian-io/@crokkon/visualizing-particle-physics-histograms-plotting-madanalysis5-saf-files-as-pngs), [**here**.](https://github.com/effofex/ma5-histo) and [**there**](https://steemit.com/utopian-io/@irelandscape/particle-physics-exercise-1c-solution)) have been developed as external tools to be used with MadAnalysis 5, by **@crokkon**, **@effofex** and **@irelandscape**. All of these modules are now [**officially endorsed by the MadAnalysis 5 team**](https://madanalysis.irmp.ucl.ac.be/wiki/WikiStart).

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One tutorial explaining [**how to run MadAnalysis 5 on windows 10**](https://steemit.com/utopian-io/@effofex/installing-and-testing-the-madanalysis-5-particle-physics-platform-on-win10-using-the-windows-subsystem-for-linux-wsl) has been released. This tutorial is now [**an official MadAnalysis 5 tutorial**](https://madanalysis.irmp.ucl.ac.be/wiki/tutorials). Moreover, **@irelandscape** wrote varied posts explaining his understanding of particle physics, which I took a lot of pleasure in reading (and clarifying where necessary). **Very importantly, it is not too late to join the project and get rewarded for it!** ___ ## THE FUTURE ___

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It is now time to make explicit **task requests for reimplementing varied ATLAS and CMS searches for new phenomena at the LHC**. In other words, it is time for Steemians to start contributing actively to particle physics research, and be rewarded for it. While more details will be posted in the next couple of weeks, please do not hesitate to re-read the posts mentioned above for help on how to do. Moreover, on Friday I released a freely available [**comprehensive and pedagogical introduction to MadAnalysis 5**](https://arxiv.org/abs/1808.00480). Appendix B should be useful, as well as sections 4.1, 4.2, 4.3 and 4.4. The rest will be important too, but for the next phases of this project. I am now about to leave for two weeks of offline life. I wish everyone a very nice summer break and thank everyone for **helping make use of Steem for scientific research**. See you all by the end of the month!