If the deuteron were an elementary particle then the triplet n - p effective range would be approximately - ZR / ( I - Z ); where R =4.31 F is the usual deuteron radius and Z is the probability of finding the deuteron in a bare elementary-particle state. This formula is model-independent; but has an error of the order of the range m π -1 =1.41 F of the n - p force; so it becomes exact only in the limit of small deuteron binding energy; i.e.; R ≫ m π -1 . The experimental value of the effective range is not of order R and negative; but rather of order m π -1 and positive; so Z is small or zero and the deuteron is mostly or wholly composite.
%0 Journal Article
%1 Weinberg1965Evidence
%A Weinberg, Steven
%D 1965
%I American Physical Society
%J Physical Review Online Archive (Prola)
%K scattering, spectroscopy
%N 3B
%P B672--B678
%R 10.1103/physrev.137.b672
%T Evidence That the Deuteron Is Not an Elementary Particle
%U http://dx.doi.org/10.1103/physrev.137.b672
%V 137
%X If the deuteron were an elementary particle then the triplet n - p effective range would be approximately - ZR / ( I - Z ); where R =4.31 F is the usual deuteron radius and Z is the probability of finding the deuteron in a bare elementary-particle state. This formula is model-independent; but has an error of the order of the range m π -1 =1.41 F of the n - p force; so it becomes exact only in the limit of small deuteron binding energy; i.e.; R ≫ m π -1 . The experimental value of the effective range is not of order R and negative; but rather of order m π -1 and positive; so Z is small or zero and the deuteron is mostly or wholly composite.
@article{Weinberg1965Evidence,
abstract = {{If the deuteron were an elementary particle then the triplet n - p effective range would be approximately - ZR / ( I - Z ); where R =4.31 F is the usual deuteron radius and Z is the probability of finding the deuteron in a bare elementary-particle state. This formula is model-independent; but has an error of the order of the range m π -1 =1.41 F of the n - p force; so it becomes exact only in the limit of small deuteron binding energy; i.e.; R ≫ m π -1 . The experimental value of the effective range is not of order R and negative; but rather of order m π -1 and positive; so Z is small or zero and the deuteron is mostly or wholly composite.}},
added-at = {2019-02-23T22:09:48.000+0100},
author = {Weinberg, Steven},
biburl = {https://www.bibsonomy.org/bibtex/2b3faba37de26d8af379bcfb5ad75acc4/cmcneile},
citeulike-article-id = {5489204},
citeulike-linkout-0 = {http://dx.doi.org/10.1103/physrev.137.b672},
citeulike-linkout-1 = {http://link.aps.org/abstract/PR/v137/i3B/pB672\_1},
citeulike-linkout-2 = {http://link.aps.org/pdf/PR/v137/i3B/pB672\_1},
doi = {10.1103/physrev.137.b672},
interhash = {1dc7fa54cc104d02cbd1a9fe0b6bf1c6},
intrahash = {b3faba37de26d8af379bcfb5ad75acc4},
journal = {Physical Review Online Archive (Prola)},
keywords = {scattering, spectroscopy},
month = feb,
number = {3B},
pages = {B672--B678},
posted-at = {2009-08-20 08:42:21},
priority = {2},
publisher = {American Physical Society},
timestamp = {2019-02-23T22:15:27.000+0100},
title = {{Evidence That the Deuteron Is Not an Elementary Particle}},
url = {http://dx.doi.org/10.1103/physrev.137.b672},
volume = 137,
year = 1965
}