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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 http://dx.doi.org/10.1103/PhysRevD.49.2310 |
It is part of: | Physical Review D, 1994, vol. 49, núm. 5, p. 2310-2315 |
URI: | http://hdl.handle.net/2445/12491 |
Related resource: | http://dx.doi.org/10.1103/PhysRevD.49.2310 |
ISSN: | 0556-2821 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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551509.pdf | 1.09 MB | Adobe PDF | View/Open |
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