Dark matter particle discovered?


	Dark matter particle discovered?

Silkweaver

4-18-2008 8:28 PM

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tags:

physics, particle physics, dark matter

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/c4086367-1e37-49ae-bd96-a19574614578/38F52191-E6FB-425C-AE3F-0FE3A67D5213/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.sciam.com/article.cfm?id=dark-matter-particle-discovered" href="http://www.sciam.com/article.cfm?id=dark-matter-particle-discovered" style="font-size: 11px;">www.sciam.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.sciam.com/article.cfm?id=dark-matter-particle-discovered">Researchers from Italy stirred up controversy eight years ago when they announced they had discovered the identity of dark matter, the invisible stuff that's thought to make up 23 percent of the universe. Now, after a long period of silence, the DAMA (DArk MAtter) collaboration at the University of Rome is about to reinforce its claim with fresh data. That's the rumor at the American Physical Society meeting here in St. Louis, anyway.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.sciam.com/article.cfm?id=dark-matter-particle-discovered">Researchers haven't seen the new results, but they say it would take a lot to convince them that the DAMA team is really onto something.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.sciam.com/article.cfm?id=dark-matter-particle-discovered">
In 2000 the DAMA group reported that it had found a small seasonal uptick in the number of particles smacking into sodium iodide <A href="http://people.roma2.infn.it/%7Edama/web/ind_nai.html">detectors</A>, after looking at three years' worth of data. They attributed the fluctuation to passing neutralinos, supersymmetry's counterpart to neutrinos, each one about 50 times the size of a proton.</blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/38F52191-E6FB-425C-AE3F-0FE3A67D5213/blog/" title="blog or email this clip"><img src="http://content6.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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