Actions for Big Bang nucleosynthesis [electronic resource] : Accelerator tests and can. cap omega.

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Big Bang nucleosynthesis [electronic resource] : Accelerator tests and can. cap omega. /sub B/ really be large

Published
Batavia, Ill. : Fermi National Accelerator Laboratory, 1987.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 10 : digital, PDF file
Additional Creators
Fermi National Accelerator Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The first collider tests of cosmological theory are now underway. The number of neutrino families in nature, N/sub nu/, plays a key role in elementary particle physics as well as in the synthesis of the light elements during the early evolution of the Universe. Standard Big Bang Nucleosynthesis argues for N/sub nu/ = 3 +- 1. Current limits on N/sub nu/ from the CERN anti pp collider and e/sup +/e/sup -/ colliders are presented and compared to the cosmological bound. Supernova SN 1987A is also shown to give a limit on N/sub nu/ comparable to current accelerator bounds. All numbers are found to be small thus verifying the Big Bang model at an earlier epoch than is possible by traditional astronomical observations. Future measurements at SLC and LEP will further tighten this argument. Another key prediction of the standard Big Bang Nucleosynthesis is that the baryon density must be small (..cap omega../sub B/ less than or equal to 0.1). Recent attempts to try to subvert this argument using homogeneities of various types are shown to run afoul of the /sup 7/Li abundance which has now become a rather firm constraint. 18 refs., 2 figs.
Report Numbers
E 1.99:fnal/c-87/166-a
E 1.99: conf-8708165-6
conf-8708165-6
fnal/c-87/166-a
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Note
Published through SciTech Connect.
10/01/1987.
"fnal/c-87/166-a"
" conf-8708165-6"
"DE88003405"
Symposium on the origin and distribution of elements, New Orleans, LA, USA, 31 Aug 1987.
Schramm, D.N.
Funding Information
AC02-76CH03000
View MARC record | catkey: 13828419