LHCf and high-energy cosmic rays

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SUMMARY

The analysis of data from the LHCf calorimeters at CERN in 2010 revealed that high-energy cosmic rays interact with the atmosphere differently than previously predicted by theoretical models. This unexpected finding indicates that physicists specializing in cosmic ray research must reassess their results to align with the new experimental data. While some participants in the discussion argue that the data does not contradict existing theories, the significant variations in theoretical predictions (ranging from a factor of 2 to 4) suggest a need for further investigation.

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  • Knowledge of LHCf calorimeter functionality
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http://cdsweb.cern.ch/journal/CERNBulletin/2011/17/News Articles/1345733?ln=en

It took physicists by surprise when analysis of the data collected by the two LHCf calorimeters in 2010 showed that high-energy cosmic rays don't interact with the atmosphere in the manner predicted by theory.

Graphe_complet_image.jpg

"Given the significant disparities between the theoretical predictions and our experimental data, I believe that physicists specialising in this research field will be obliged to re-visit their results in the light of this new information."*
 
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I don't see a disagreement between data and theory. I see a range of theories with a factor of 2-4 average variation and the data lying inside this range.
 

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