

A003677


Decimal expansion of proton mass (mass units).
(Formerly M4324)


6




OFFSET

1,4


COMMENTS

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, WZ 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


REFERENCES

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, SpringerVerlag, NY, 2nd ed., 1987.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).


LINKS

Table of n, a(n) for n=1..10.
NIST, CODATA value: proton mass in u


CROSSREFS

Cf. A005601.
Sequence in context: A177437 A242021 A096052 * A301864 A295421 A217172
Adjacent sequences: A003674 A003675 A003676 * A003678 A003679 A003680


KEYWORD

cons,nonn,nice,hard


AUTHOR

N. J. A. Sloane, Mira Bernstein


EXTENSIONS

Updated by Ivan Panchenko, May 30 2019


STATUS

approved



