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主题:大亚湾中微子实验国际合作组宣布发现新的中微子振荡 -- foursea

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大亚湾中微子实验发现电子反中微子消失:一种新的中微子振荡

Physicists in China Nail a Key Neutrino Measurement

"It's not just a parameter, it's a gateway," says Robert Plunkett, a physicist at Fermi National Accelerator Laboratory in Batavia, Illinois, who works on an accelerator-based neutrino experiment called MINOS.

这个参数非常重要,你翻阅任何一本中微子方面的书都会详细讨论这个参数的大小及其意义,竞争非常激烈。大亚湾从只取数了55天,就获得了确定性的结果。

听说建设阶段,遇到不少人为地困难,比如,个别地方政府的干扰,所以实际建设时间比预期的长,还好没有太晚。

In making a definitive measurement, the Daya Bay researchers edged out four other teams that were vying for the prize. Last June, physicists working with an accelerator-based neutrino experiment in Japan called T2K came close with measurements using a slightly different technique . Ten days later, MINOS released a similar result. In November, researchers working with the Double Chooz reactor experiment in northeastern France reported a result with large uncertainty. The RENO experiment in South Korea is also measuring the angle.

The result is significant for another reason, says Jefferson lab's McKeown. "This is arguably the most important physics result ever to come out of China," he says. Chinese particle physics has arrived, it seems.

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