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Title: Empirical determination of the very high energy heavy quark cross section from nonaccelerator data
Author: González García, Ma. Concepción
Halzen, Francis
Vázquez, R. A.
Keywords: Fenomenologia (Física)
Raigs còsmics
Partícules (Física nuclear)
Pertorbació (Dinàmica quàntica)
Phenomenological theory (Physics)
Cosmic rays
Particles (Nuclear physics)
Perturbation (Quantum dynamics)
Issue Date: 1994
Publisher: The American Physical Society
Abstract: To cosmic rays incident near the horizon the Earth's atmosphere represents a beam dump with a slant depth reaching 36 000 g cm-2 at 90. The prompt decay of a heavy quark produced by very high energy cosmic ray showers will leave an unmistakable signature in this dump. We translate the failure of experiments to detect such a signal into an upper limit on the heavy quark hadroproduction cross section in the energy region beyond existing accelerators. Our results disfavor any rapid growth of the cross section or the gluon structure function beyond conservative estimates based on perturbative QCD.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review D, 1994, vol. 49, núm. 5, p. 2310-2315
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ISSN: 0556-2821
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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