Constraints on Light Pseudoscalars Implied by Tests of the Gravitational Inverse-Square Law

Abstract

The exchange of light pseudoscalars between fermions leads to a spin-independent potential in order g^4, where g is the Yukawa pseudoscalar-fermion coupling constant. This potential gives rise to detectable violations of both the weak equivalence principle (WEP) and the gravitational inverse-square law (ISL), even if g is quite small. We show that when previously derived WEP constraints are combined with those arisingfrom ISL tests, a direct experimental limit on the Yukawa coupling of light pseudoscalars to neutrons can be inferred for the first time (g_n^2/4pi < 1.6 \times 10^-7), along with a new (and significantly improved) limit on the coupling of light pseudoscalars to protons.

12 pages, Revtex, with 1 Postscript figure (submitted to Physical Review Letters)

References in corpus (2)

• Long Range Forces from Pseudoscalar Exchange
• New Limits on the Couplings of Light Pseudoscalars from Equivalence Experiments

Cited by in corpus (19)

• Search for New Physics with Atoms and Molecules
• New Developments in the Casimir Effect
• Sub-millimeter Tests of the Gravitational Inverse-square Law
• Particle Physics Implications of a Recent Test of the Gravitational Inverse Square Law
• Spin-Dependent Macroscopic Forces from New Particle Exchange
• Short-range tests of the equivalence principle
• New constraints on ultrashort-ranged Yukawa interactions from atomic force microscopy
• Constraints on non-Newtonian gravity from the Casimir force measurements between two crossed cylinders
• Observational Constraints on the Regularized 4D Einstein-Gauss-Bonnet Theory of Gravity
• Searching for solar axions using data from the Sudbury Neutrino Observatory
• Spin-dependent exotic interactions
• Bose-Einstein Condensation, Dark Matter and Acoustic Peaks
• Constraints on the parameters of axion from measurements of thermal Casimir-Polder force
• Constraining axion-nucleon coupling constants from measurements of effective Casimir pressure by means of micromachined oscillator
• Stronger constraints on axion from measuring the Casimir interaction by means of dynamic atomic force microscope
• Calculations of the dominant long-range, spin-independent contributions to the interaction energy between two nonrelativistic Dirac fermions from double-boson exchange of spin-0 and spin-1 bosons with spin-dependent couplings
• Scalar Dark Matter and Cold Stars
• Bounds on the Coupling of Light Pseudoscalars to Nucleons from Optical Laser Experiments
• Constraints on Non-Newtonian Gravity from Recent Casimir Force Measurements