Why? According to what we “know” about the universe, there should be roughly the same amount of matter and antimatter in the universe, but since the two destroy each other that would mean the universe should be a massive radioactive mess. Instead, the universe is obviously populated with an abundance of matter; we’re not sure why, but physicists speculate that there must be some law of physics operating at the subatomic level that is different for matter and antimatter.
The “T2K” experiment — short for Tokai-to-Kamioka — is beaming high-powered streams of neutrinos from a particle accelerator in Tokai village to the Super-Kamiokande detector nearly 300 miles away. Neutrinos don’t engage with matter for the most part, but every now and again one smashes into an atomic nucleus in the detector. Researchers at the receiving end can then measure how many muon neutrinos in the beam are changing into electron neutrinos, hoping that observing these oscillations will shed some light on that discrepancy in physical laws.
By comparing what they find out about neutrinos to anti-neutrinos, researchers might be able to figure out why anti-matter has received the short end of the stick in the cosmos, and hence why the universe is — fortunately for us — so full of sweet, sweet matter.
Popular Science has been a leading source of science, technology and gadget news since 1872. With up-to-the minute latest space news, insightful commentary on the new innovations and concept cars ...if it's new or future technology you'll find it at popsci.com.au.
WW Media - Popular Science © 2010
Gadgets - Cars - Science