Klaatu wrote:

New clue to dark matter
http://www.newscientist.com/news/news.jsp?id=ns99994214
..."By "light", the researchers mean one to 100 megaelectronvolts, which
is between 1000 and 10 times lighter than a proton. Such a light particle
is surprising because particle accelerators routinely create particles of
this mass, so the particle should have revealed itself.

"To have escaped detection, it must be very weakly interacting," says
Hooper. "A particle in [this] range could have been missed," agrees Nigel
Smith, head of the UK Dark Matter Collaboration Experiment."...

Propose the name WISP for the new particle. Weakly interacting small
particle