New constraints on composition-dependent interactions weaker than gravity

Details New constraints on composition-dependent interactions weaker than gravity New constraints on composition-dependent interactions weaker than gravity

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987phrvl..59..849a&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 59, Aug. 24, 1987, p. 849-852. DOE-supported research.

Other

75

Baryons, Weak Interactions (Field Theory), Aluminum, Amplitudes, Beryllium, Copper, Water, Other Topics In General Relativity And Gravitation

Scientific paper

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.

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