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dc.contributor.authorGonzález García, Ma. Concepcióncat
dc.contributor.authorHalzen, Franciscat
dc.contributor.authorVázquez, R.
dc.description.abstractTo 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.eng
dc.publisherThe American Physical Societyeng
dc.relation.isformatofReproducció digital del document publicat en format paper, proporcionada per PROLA i
dc.relation.ispartofPhysical Review D, 1994, vol. 49, núm. 5, p. 2310-2315cat
dc.rights(c) The American Physical Society, 1994eng
dc.sourceArticles publicats en revistes (Física Quàntica i Astrofísica)-
dc.subject.classificationFenomenologia (Física)cat
dc.subject.classificationRaigs còsmicscat
dc.subject.classificationPartícules (Física nuclear)cat
dc.subject.classificationPertorbació (Dinàmica quàntica)cat
dc.subject.otherPhenomenological theory (Physics)eng
dc.subject.otherCosmic rayseng
dc.subject.otherParticles (Nuclear physics)eng
dc.subject.otherPerturbation (Quantum dynamics)eng
dc.titleEmpirical determination of the very high energy heavy quark cross section from nonaccelerator dataeng
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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