New constraints on composition-dependent interactions weaker than gravity

Published data from two recent experiments testing the fifth-force hypothesis are analyzed theoretically, and new results are reported. It is suggested that both (1) the positive result of Thieberger (1987) using a hollow Cu sphere floating in water and (2) the negative result of Stubbs et al. (1987...

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Bibliographic Details
Published in:Physical review letters 1987-08, Vol.59 (8), p.849-852
Main Authors: ADELBERGER, E. G, STUBBS, C. W, ROGERS, W. F, RAAB, F. J, HECKEL, B. R, GUNDLACH, J. H, SWANSON, H. E, WATANABE, R
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Other techniques and industries
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Summary:Published data from two recent experiments testing the fifth-force hypothesis are analyzed theoretically, and new results are reported. It is suggested that both (1) the positive result of Thieberger (1987) using a hollow Cu sphere floating in water and (2) the negative result of Stubbs et al. (1987) using Cu and Be test bodies in a torsion balance operated on a hillside could be explained in terms of a single Yukawa interaction with a nonzero value of the mixing angle theta5. However, the results of a new torsion-balance experiment with Al and Be test bodies appear to rule out such an interaction, the only possible exception being an interaction coupled to q5 and limited to a narrow region with theta5 near -63 deg. (T.K.)
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.59.849