A new calibration of the Large Underground Xenon dark matter detector brought a 10-fold increase in calibration accuracy, confirming findings announced last October from the instrument’s first 90-day run. If low-mass ‘WIMP’ particles had passed through the detector, Large Underground Xenon would have found them. Dark matter is thought to account for about 80 percent of the mass of the universe. Though it has not yet been detected directly, its existence is a near certainty among physicists.
from Physics News — ScienceDaily http://ift.tt/OioTWk