Short-range tests of the equivalence principle (original) (raw)

ADS

;

• Hoyle, C. D. ;
• Gundlach, J. H. ;
• Adelberger, E. G. ;
• Heckel, B. R. ;
• Swanson, H. E.

Abstract

We tested the equivalence principle at short length scales by rotating a 3 ton 238U attractor around a compact torsion balance containing Cu and Pb test bodies. The observed differential acceleration of the test bodies toward the attractor, aCu-aPb=(1.0+/-2.8)×10-13 cm/s2, should be compared to the corresponding gravitational acceleration of 9.2×10-5 cm/s2. Our results set new constraints on equivalence-principle violating interactions with Yukawa ranges down to 1 cm, and improve by substantial factors existing limits for ranges between 10 km and 1000 km. Our data also set strong constraints on certain power-law potentials that can arise from two-boson exchange processes.

Publication:

Physical Review D

Pub Date:

December 1999

DOI:

10.1103/PhysRevD.61.022001

10.48550/arXiv.2405.10982

arXiv:

arXiv:2405.10982

Bibcode:

1999PhRvD..61b2001S

Keywords:

• 04.80.-y;
• 04.90.+e;
• 14.80.-j;
• Experimental studies of gravity;
• Other topics in general relativity and gravitation;
• Other particles;
• General Relativity and Quantum Cosmology;
• High Energy Physics - Phenomenology

E-Print:

Copyright: American Physical Society (APS), 20 pages, 22 figures