BROOKHAVEN, N.Y., May 9 (UPI) -- U.S. physicists say they're planning a new experiment in particle physics -- but first there's the small matter of moving a 50-foot-diameter magnet 3,200 miles. Along with colleagues from 26 institutions around the world, they are planning an experiment to study the properties of muons, tiny subatomic particles that exist for only 2.2 millionths of a second. But first the core of the experimental equipment, a complex electromagnet 50 feet in diameter, needs to be moved from the U.S. Department of Energy's Brookhaven National Laboratory in New York to the department's Fermi National Accelerator...