منابع مشابه
Cosmic Rays I . The cosmic ray spectrum between 10 4 GeV and 3 10 9 GeV
Based on a conjecture about the diffusion tensor of relativistic particles perpendicular to the magnetic field at a shock, and considering particle drifts, I develop a theory to account for the Cosmic Ray spectrum between 10 GeV and 3 10 GeV. The essential assumption is that the free mean path perpendicular to the magnetic field is independent of energy and has the scale of the thickness of the...
متن کامل5-10 GeV neutrinos from gamma-Ray burst fireballs
A gamma-ray burst fireball is likely to contain an admixture of neutrons. Inelastic collisions between differentially streaming protons and neutrons in the fireball produce nu(&mgr;) (nu;(&mgr;)) of approximately 10 GeV as well as nu(e) (nu;(e)) of approximately 5 GeV, which could produce approximately 7 events/year in km(3) detectors, if the neutron abundance is comparable to that of protons. ...
متن کاملExtracting α s from Electron – Positron Annihilation around 10 GeV
The total cross section for electron–positron annihilation into hadrons is calculated in the region just below the B meson threshold. QCD corrections up to third order, quark mass effects, initial state radiation, the running of α QED and the tails of the Υ resonances are included in the prediction. For given α s the prediction is accurate to 0.5 percent. An experimental measurement with the co...
متن کاملComparison of particle production in quark and gluon fragmentation at root s similar to 10 GeV
R. A. Briere, T. Ferguson, G. Tatishvili, H. Vogel, M. E. Watkins, J. L. Rosner, N. E. Adam, J. P. Alexander, D. G. Cassel, J. E. Duboscq, R. Ehrlich, L. Fields, R. S. Galik, L. Gibbons, R. Gray, S. W. Gray, D. L. Hartill, B. K. Heltsley, D. Hertz, C. D. Jones, J. Kandaswamy, D. L. Kreinick, V. E. Kuznetsov, H. Mahlke-Kruger, P. U. E. Onyisi, J. R. Patterson, D. Peterson, J. Pivarski, D. Riley,...
متن کاملFrom 3k to 10
The problem of predicting the upper cut-off of the cosmic ray spectrum is re-examined. Some aspects of extremely high energy interactions and their implications for the interpretation of giant air showers are also discussed.
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ژورنال
عنوان ژورنال: Radiation Physics and Chemistry
سال: 2006
ISSN: 0969-806X
DOI: 10.1016/j.radphyschem.2005.09.005