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arXiv · 1610.03723

Measuring Charged Particle Multiplicity with Early ATLAS Public Data

Gözde Üstün·Erol Barut·Erhan Bektaş·V. Erkcan Özcan
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Abstract

We study 100 images of early LHC collisions that were recorded by the ATLAS experiment and made public for outreach purposes, and extract the charged particle multiplicity as a function of momentum for proton-proton collisions at sqrt(s) = 7 TeV. As the collisions we study have already been pre-processed by the ATLAS Collaboration, the tracks are visible, but are available to the public only in the form of low-resolution bitmaps. We employ two separate image processing methods, one based on the industry-standard OpenCV library and C++, another based on self-developed algorithms in Python. We present the transverse momentum and azimuthal angle distributions of the particles obtained through both methods, in agreement with the literature.

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Gözde Üstün, Erol Barut, Erhan Bektaş, V. Erkcan Özcan. 2016-10-08. Measuring Charged Particle Multiplicity with Early ATLAS Public Data. https://doi.org/10.1088/1361-6404%2Faa7471

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