Quark compositeness, new physics, and ultrahigh-energy cosmic-ray double-core γ-family events

Details Quark compositeness, new physics, and ultrahigh-energy cosmic-ray double-core γ-family events Quark compositeness, new physics, and ultrahigh-energy cosmic-ray double-core γ-family events

Mar 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994phrvl..72.1794c&link_type=abstract

Physical Review Letters, Volume 72, Issue 12, March 21, 1994, pp.1794-1797

Physics

9

Cosmic-Ray Interactions, Experimental Tests, Composite Models

Scientific paper

We find a significant excess of ultrahigh-energy cosmic-ray events at large transverse momenta with respect to the prediction by standard perturbative QCD at Elab~104-105 TeV, an energy regime beyond the reach of existing colliders but within the range of future hadron colliders. Such a large deviation cannot be accounted for by a compositeness model of quarks with a characteristic energy scale Λc>1.4 TeV allowed by current collider experiments, pointing towards new physics.

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