## What Happens When Things Go Near the Speed
of Light?

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Does your graph of the
computer-simulated data (red) and the values you calculated look like
this one?
(A note about the computer-simulated data) Our calculations (purple) were **based on D
= vt**. The data show that as velocity increases the decay length
increases, but the increase is larger than we expected! Obviously, our
calculated points do match the Fermilab data. In addition, the red data
points do not fit any obvious curve. They form neither a line nor a
parabola nor an inverse.

Disagreements this far from expectation **and** this
uniform in
appearance bear further investigation. Why do faster moving particles
go even farther than you expect? Do particles live longer if they are moving
very fast?

**What's going on?**

Project team

Program Contact: Tom Jordan - jordant@fnal.gov

Web Maintainer: ed-webmaster@fnal.gov
Last Updated: February 9, 2000

http://www-ed.fnal.gov/data/phy_sci/relativity/resultsleft.shtml