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A003677
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Decimal expansion of proton mass (mass units).
(Formerly M4324)
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2
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OFFSET
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1,4
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COMMENTS
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In the current theory of strong and electroweak interactions, this is not a mathematical constant but an experimental summary of (virtual) quark rests masses plus contributions from gluon (meson) and electroweak (photon, W-Z boson) exchange energies (in the scope of general relativity). [I've changed the last two digits to the current "best" estimates, 7,0->6,7] - R. J. Mathar, Aug 09 2007
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REFERENCES
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J. Borwein and P. Borwein, A Dictionary of Real Numbers, Wadsworth, Pacific Grove, Calif., 1990, p. v.
H. J. Fischbeck and K. Fischbeck, Formulas. Facts and Constants, Springer-Verlag, NY, 2nd ed., 1987.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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Table of n, a(n) for n=1..10.
CODATA, Proton mass.
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CROSSREFS
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Cf. A005601.
Sequence in context: A021583 A177437 A096052 * A217172 A010506 A197845
Adjacent sequences: A003674 A003675 A003676 * A003678 A003679 A003680
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KEYWORD
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cons,nonn,nice,hard
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AUTHOR
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N. J. A. Sloane, Mira Bernstein
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STATUS
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approved
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