# A New Stringy Postdiction

Staff Emeritus
Gold Member
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This new paper, http://www.arxiv.org/PS_cache/hep-ph/pdf/0506/0506190.pdf [Broken], contains a stringy explanation of the latest unexplained difference, of order 31X10^-10, in the anomalous muon magnetic moment. The explanation is based on the Randall-Sundrum brane-world model, using a particular ("ADD") specialization of it. The author, Konosuke Sawa, assumes the brane the standard model physics lies on can fluctuate, and therefore stretch, and that these fluctuations are stationary in time (this is his big extra assumption). Then he can calculate the contribution of the stretching to the AMM spread of the muon, and Lo! it matches pretty well. There is an undetermined parameter that he could tune to make it exact, but the parameter has cosmological consequences too, which constrain it. In any case he gets the 10^-10 right.

By itself this isn't falsifiable, since it's a proposed explanation, not a prediction. But in his conclusion Sawa proposes to apply the same method to Lorentz symmetry breaking, an unresolved question at this time. There is a possible chance for him to make a prediction that could later be checked at LHC.

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marcus
Gold Member
Dearly Missed
This new paper, http://www.arxiv.org/PS_cache/hep-ph/pdf/0506/0506190.pdf [Broken], contains a stringy explanation of the latest unexplained difference, of order 31X10^-10, in the anomalous muon magnetic moment...

could be worth some here looking into.
here is the abstract
http://arxiv.org/abs/hep-ph/0506190

Muon anomalous magnetic moment due to the brane stretching effect
Konosuke Sawa
16 pages, 1 figure

"We investigate the contribution of extra dimensions to the muon anomalous magnetic moment by using a 6-dimensional model. This approach analyzes the extent of the influence of small brane fluctuations on the magnetic moment. In particular, we assume that the fluctuations are static in time, and they add new potential terms to the schrödinger equation through the induced vierbein. This paper shows that the brane fluctuation is responsible for the brane stretching effect. This effect would be capable of reproducing the appropriate order for recent BNL measurements of the muon (g-2) deviation."

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