【爆炸新闻】超光速中微子咋来的？很可能是意大利人没接 ...

信息来源：@拟南芥 今早发了个微博说这个事情。这个事是由sciencemag报道的，它是一个国际科学周刊的网站，由美国科学促进会（AAAS）主办。泥马这就是大名鼎鼎的science！
http://news.sciencemag.org/scien ... -undoes-faster.html

It appears that the faster-than-light neutrino results, announced last September by the OPERA collaboration in Italy, was due to a mistake after all. A bad connection between a GPS unit and a computer may be to blame.

去年9月意大利的OPERA实验宣布的中微子超光速，似乎是由一个错误导致的。GPS模块和一台电脑之间的错误连接，或许是导致这一惊人结果的罪魁祸首。


Physicists had detected neutrinos travelling from the CERN laboratory in Geneva to the Gran Sasso laboratory near L'Aquila that appeared to make the trip in about 60 nanoseconds less than light speed. Many other physicists suspected that the result was due to some kind of error, given that it seems at odds with Einstein's special theory of relativity, which says nothing can travel faster than the speed of light. That theory has been vindicated by many experiments over the decades.

那些物理学家测量了中微子从日内瓦欧洲核子研究中心的实验室（发出端）到拉奎拉附近格朗萨索实验室（接收端）所花的时间，发现中微子完成这段旅程的时间比光速飞行所需时间还短了大约60纳秒。许多其他物理学家怀疑，这个结果是由某种错误导致的，因为它似乎违背了爱因斯坦的狭义相对论。这个理论已经经受住了过去几十年来许多实验的检验。

According to sources familiar with the experiment, the 60 nanoseconds discrepancy appears to come from a bad connection between a fiber optic cable that connects to the GPS receiver used to correct the timing of the neutrinos' flight and an electronic card in a computer. After tightening the connection and then measuring the time it takes data to travel the length of the fiber, researchers found that the data arrive 60 nanoseconds earlier than assumed. Since this time is subtracted from the overall time of flight, it appears to explain the early arrival of the neutrinos. New data, however, will be needed to confirm this hypothesis.

据熟悉这一实验的消息人士透露，60纳秒的偏差似乎来自于GPS接收器与一台电脑上的板卡之间一根光纤的连接失败，这个GPS接收器是用来校准中微子飞行时间的。在拧紧这根连接线之后，重新测量数据通过这么长一段光纤所需的时间，研究人员发现数据抵达的时间比之前假设的提前了60纳秒。由于这段时间是要从中微子总的飞行时间中扣除的，这似乎解释了中微子的“提前抵达”。

不过，还必须有新的数据来验证这一假说才行。


粗略翻译了一下，大家知道意思就好了……
总之这个新闻中的信息要被证实，那OPERA就糗大了，众多指望靠中微子超光速吃饭的理论物理学家也要失望了……

PS:关于中微子超光速当时的报道，具体请见：意大利科学家发现超光速粒子，爱因斯坦狭义相对论或许错了？甚至连《生活大爆炸》里的谢耳朵也拿这个消息吐过槽，详见：TBBT.S05E08：不靠谱的“中微子超光速”。

科学松鼠会也曾经邀请过中科院理论物理所的@李淼 老师和高能所曹俊老师，就中微子有没有超光速这个话题做过一期科学讲座，有兴趣的朋友可以看看@桔子帮小帮主 写的科学讲座回顾：中微子，你今天超光速了吗？


信息来源：@拟南芥 今早发了个微博说这个事情。这个事是由sciencemag报道的，它是一个国际科学周刊的网站，由美国科学促进会（AAAS）主办。泥马这就是大名鼎鼎的science！
http://news.sciencemag.org/scien ... -undoes-faster.html

It appears that the faster-than-light neutrino results, announced last September by the OPERA collaboration in Italy, was due to a mistake after all. A bad connection between a GPS unit and a computer may be to blame.

去年9月意大利的OPERA实验宣布的中微子超光速，似乎是由一个错误导致的。GPS模块和一台电脑之间的错误连接，或许是导致这一惊人结果的罪魁祸首。


Physicists had detected neutrinos travelling from the CERN laboratory in Geneva to the Gran Sasso laboratory near L'Aquila that appeared to make the trip in about 60 nanoseconds less than light speed. Many other physicists suspected that the result was due to some kind of error, given that it seems at odds with Einstein's special theory of relativity, which says nothing can travel faster than the speed of light. That theory has been vindicated by many experiments over the decades.

那些物理学家测量了中微子从日内瓦欧洲核子研究中心的实验室（发出端）到拉奎拉附近格朗萨索实验室（接收端）所花的时间，发现中微子完成这段旅程的时间比光速飞行所需时间还短了大约60纳秒。许多其他物理学家怀疑，这个结果是由某种错误导致的，因为它似乎违背了爱因斯坦的狭义相对论。这个理论已经经受住了过去几十年来许多实验的检验。

According to sources familiar with the experiment, the 60 nanoseconds discrepancy appears to come from a bad connection between a fiber optic cable that connects to the GPS receiver used to correct the timing of the neutrinos' flight and an electronic card in a computer. After tightening the connection and then measuring the time it takes data to travel the length of the fiber, researchers found that the data arrive 60 nanoseconds earlier than assumed. Since this time is subtracted from the overall time of flight, it appears to explain the early arrival of the neutrinos. New data, however, will be needed to confirm this hypothesis.

据熟悉这一实验的消息人士透露，60纳秒的偏差似乎来自于GPS接收器与一台电脑上的板卡之间一根光纤的连接失败，这个GPS接收器是用来校准中微子飞行时间的。在拧紧这根连接线之后，重新测量数据通过这么长一段光纤所需的时间，研究人员发现数据抵达的时间比之前假设的提前了60纳秒。由于这段时间是要从中微子总的飞行时间中扣除的，这似乎解释了中微子的“提前抵达”。

不过，还必须有新的数据来验证这一假说才行。


粗略翻译了一下，大家知道意思就好了……
总之这个新闻中的信息要被证实，那OPERA就糗大了，众多指望靠中微子超光速吃饭的理论物理学家也要失望了……

PS:关于中微子超光速当时的报道，具体请见：意大利科学家发现超光速粒子，爱因斯坦狭义相对论或许错了？甚至连《生活大爆炸》里的谢耳朵也拿这个消息吐过槽，详见：TBBT.S05E08：不靠谱的“中微子超光速”。

科学松鼠会也曾经邀请过中科院理论物理所的@李淼 老师和高能所曹俊老师，就中微子有没有超光速这个话题做过一期科学讲座，有兴趣的朋友可以看看@桔子帮小帮主 写的科学讲座回顾：中微子，你今天超光速了吗？