Experimental Bounds on the Coupling Strength of Torsion Potentials
Jan, 198019 pages
Published in:
- Phys.Rev.D 21 (1980) 2075
Report number:
- Print-80-0023 (TEMPLE)
Citations per year
Abstract: (APS)
We examine the experimental implications of a recent suggestion by Kaempffer that the coupling strength G′ for a propagating torsion potential need not be the same as the Newtonian gravitational coupling strength G. We allow the torsion potential to transform either as a six-tensor, or as a pseudoscalar. In neutrino-electron and neutrino-nucleon scattering, we find that pseudoscalar exchange does not contribute, while exchange of the six-tensor closely simulates exchange of a Z0. Agreement of data with Weinberg-Salam neutral current theory is preserved if 4πG′<0.14GFc2ℏ2, where GF is the Fermi μ decay constant. If we demand that emission of torsion quanta not destroy the energy balance in helium-burning stars, we get a much stronger bound 4πG′<5×10−19GFc2ℏ2. This bound applies to both cases, pseudoscalar as well as six-tensor. It may be rewritten G′<1(1.5×1012 GeV)2 in natural units. For comparison, G=1(1.2×1019 GeV)2.- MODEL: GRAVITATION
- POTENTIAL: COUPLING CONSTANT
- COUPLING CONSTANT: POTENTIAL
- GRAVITATION: COUPLING CONSTANT
- COUPLING CONSTANT: GRAVITATION
- TRANSFORMATION: GAUGE
- NEUTRINO ELECTRON: INTERACTION
- INTERACTION: NEUTRINO ELECTRON
- NEUTRINO NUCLEON: INTERACTION
- INTERACTION: NEUTRINO NUCLEON
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