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ATLAS Cheat Sheets

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Discover the ATLAS Cheat Sheets

Explore educational physics "cheat sheets" developed by researchers at the ATLAS Collaboration, ideal to help with all those physics terms you want to know more about. With these sheets, you'll explore concepts from the Standard Model to conservation laws.

Conservation Laws

Conservation Laws

These laws govern the reactions we observe in particle physics! Their violation would be a sign of new physics.

Keywords: standard model
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Cross Section and Luminosity

Cross Section and Luminosity

This sheet defines cross section and luminosity, presents examples of LHC cross sections, and introduces the method used to determine number of events.

Keywords: cross section, luminosity
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Feynman Diagrams

Feynman Diagrams

A powerful tool to visually represent particle interactions, as well as to conduct elaborate calculations! Learn the basics on how to read Feynman diagrams.

Keywords: higgs boson, LHC
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Signal and Background

Signal and Background

This sheet defines signal and background and presents some common strategies for increasing the signal-to-background ratio.

Keywords: standard model, photon, lepton
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Statistical Significance

Statistical Significance

When physicists make statements about whether or not a given process has been observed in the LHC data, they must back up their claim with strong statistical evidence. This is often expressed in terms of standard deviations or the p-value.

Keywords: standard deviation, p-value
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Standard Model

The Standard Model

All fundamental particles classified based on their properties! Deviations to the Standard Model can point the way to new physics.

Keywords: dark matter, standard model, higgs boson, fermion
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Credits and Terms of Use

ATLAS Experiment cheat sheets are free to download for personal and educational use. Content Copyright: ATLAS Experiment © CERN

  • Text and project development: Elise Le Boulicaut and Valerie Buxbaum on behalf of the ATLAS Collaboration
  • Translations: Elise Le Boulicaut (French), Daniel Trujillo (French, Spanish), Rebeca Gonzalez Suarez (Spanish), Lukas Kretschmann (German), Giada Mancini and Giuseppe Carratta (Italian), Dave Van Wijk (Dutch)
  • Background image: Ana María Rodríguez Vera on behalf of the ATLAS Collaboration