Muon decay in the atomic matrix

A muon is a heavy, short-lived cousin of the electron. Fast muons live longer than slow ones, an effect called time dilation. Standard Relativity holds that this stretching of the lifespan depends only on velocity.

RSI explains ordinary time dilation by the helical path of the knot's circulating wave, which gives exactly relativity's velocity factor (Chapter VIII). The open question is whether dense matter adds anything further. RSI proposes that a dense lattice shades the muon from the full background vibration of the medium, reducing the friction on each internal step, so the clamp holds the knot slightly longer.

If so, muons traveling through a dense shield should persist slightly longer than muons in a vacuum at the same velocity. The test compares lifespans in open and shielded conditions and has not yet been done at the required precision. Existing data set a limit: positive muons stopped in materials whose densities differ by about a factor of three show the same lifetime within about two parts per million. The predicted size of the effect for a given shield remains to be calculated.