Sunday, 20 October 2013

US experiment to vote on dark matter 16 Oct 2013 | 01:10 BST | Posted by Eugenie Samuel Reich | NATURE NEWS BLOG

A US experiment is poised to resolve confusion over whether dark matter has already been detected. The Large Underground Xenon Experiment (LUX) at Sanford Underground Laboratory in Lead, South Dakota — announced on 15 October that it will release its first results on 30 October.
LUX began taking data earlier this year, promising to rival or even surpass limits on dark-matter detection set by a competitor, XENON-100, which is located at Gran Sasso National Laboratory near L’Aquila, Italy. In 2011, XENON-100 ruled out many heavier and more strongly interacting dark matter particles, but its result is in tension with tantalizing data hinting at the existence of light dark-matter particles from two other US experiments, the Cryogenic Dark Matter Search (CDMS) at the University of California, Berkeley, and the CoGeNT experiment at Soudan Underground Laboratory in Minnesota. With more than 350 kilograms of liquid xenon held underground to snare dark-matter particles as they pass through the Earth, LUX might become the deciding vote. “I’m cautiously optimistic this could be the final word on the situation,” says dark-matter theorist Dan Hooper of Fermi National Accelerator Laboratory in Batavia, Illinois.

Of course the final word on whether CDMS and CoGeNT’s dark-matter particles are real is far from the final word on whether dark matter is detectable on Earth; more weakly interacting particles could still be out there, and plans exist to scale up both XENON-100 and LUX to try to find them.

1 comment:

  1. Dark Matter present everywhere, even in our surrounding but only sizes are different [depending on size & number of dark atom constituting it]. It follows the super-symmetry. To find the dark matter we have to search it either near its originating place or near its favorite destination. Since we can not reach originating position or more favorite destination like stars, at present we are compelled to search it near earth. For more impact we have to do the experiment at more depth inside the earth [if possible-next time] than our present or previous experiment. The dark matter interact white matter very weakly but continuously. It is not static it can move very fast depending on ….. It formed regularly at…. It play a very important role in all the phenomenon of our surrounding too.

    If we think that by using the knowledge [property] of 4-6%[White (Baryonic) Matter], we have correctly explained or going to explain the 100%, then we are in ‘confusion’.

    The knowledge of 76-74% [Dark Atom, Matter & Energy] may not change the process, effects & formula, but certainly changes the basic theory behind it.