The proton shrinks in size
Tiny change in radius has huge implications.
The proton seems to be 0.00000000000003 millimetres smaller than researchers previously thought, according to work published in today's issue of Nature1.
http://www.nature.com/news/2010/100707/full/news.2010.337.html
The Incredible Shrinking Proton? - ScienceNOW
"The most precise measurement ever made of the proton's radius shows that the subatomic particle is 4% smaller than previously thought.
http://news.sciencemag.org/sciencenow/2010/07/smaller-proton.html
How small is the proton?
http://www.mpq.mpg.de/cms/mpq/en/news/press/10_07_08.html
Proton Smaller Than Thought—May Rewrite Laws of Physics
Smaller Proton Size Revealed by Lasers
In a ten-year experiment, a team led by Randolf Pohl of the Max-Planck Institute of Quantum Optics in Garching, Germany, used a specialized particle accelerator to alter hydrogen atoms, which are each made of a single proton orbited by an electron."
http://news.nationalgeographic.com/news/2010/07/100707-science-proton-smaller-standard-model-quantum-physics/
Proton is smaller than we thought - physicsworld.com
http://physicsworld.com/cws/article/news/43128
For a Proton, a Little Off the Top (or Side) Could Be Big Trouble - NYTimes.com
"Putting these techniques together gave an answer of about 0.8768 femtometer for the proton’s radius, just less than a quadrillionth of a meter."
http://www.nytimes.com/2010/07/13/science/space/13proton.html
Proton Smaller Than Thought—May Rewrite Laws of Physics
http://news.nationalgeographic.com/news/2010/07/100707-science-proton-smaller-standard-model-quantum-physics/
陽子は通説より小さいと示す実験結果- ナショナルジオグラフィック
http://www.nationalgeographic.co.jp/news/news_article.php?file_id=20100708001&expand
