PDA

Archiv verlassen und diese Seite im Standarddesign anzeigen : Neutrinos doch nicht schneller als das Licht?


Timm
24.02.12, 10:09
Hi,

das Thema hat ja eine Weile für Aufregung gesorgt. Nun werden ziemlich triviale Ursachen (lockeres Kabel!) diskutiert.

http://www.astronews.com/news/artikel/2012/02/1202-034.shtml

Gruß, Timm

Hawkwind
24.02.12, 10:15
Hi,

das Thema hat ja eine Weile für Aufregung gesorgt. Nun werden ziemlich triviale Ursachen (lockeres Kabel!) diskutiert.

http://www.astronews.com/news/artikel/2012/02/1202-034.shtml

Gruß, Timm


Allerdings kann von einer Klärung noch lange nicht die Rede sein:
Neutrinos may still have broken light barrier - or not (http://www.reuters.com/article/2012/02/23/us-science-cern-idUSTRE81M0LN20120223)


...
"Last September, the OPERA researchers said clearly the reading of the speed was an experimental result that had to be cross-checked," said Heuer, from whose centre the neutrinos are pumped underground to Italy.

"They have continued to check and check and check, and now they have found these two possible effects, one going in one direction and the other going in another," said the CERN chief. "This is how science should be done."
...

"At this point it is not clear how their newly-discovered effects will influence the final result, and we should wait for their announcements," he said.

"Just as it would have been unwise to jump to the conclusion that the initial results were the result of an anomaly, it would be unwise to make any assumptions now," said David Wark, a particle physics professor also at the Rutherford.

One of what their statement called "possible effects" - or influences leading to an incorrect reading - concerned an oscillator used to provide the time stamps for GPS (global positioning system) synchronizations, the OPERA scientists said.

This could have caused the neutrinos' speed to be registered as faster - a fraction over the speed of light - than it actually was.

The other "effect" related to an optical fiber connector that brought the external GPS signal to the master clock at Gran Sasso "which may not have been functioning correctly when the measurements were taken," the OPERA team added.


Ist also auch nicht ausgeschlossen, dass sie noch schneller waren als ursprünglich publiziert.

Gruß ...

Timm
24.02.12, 11:07
Ist also auch nicht ausgeschlossen, dass sie noch schneller waren als ursprünglich publiziert.

Interessante Info, es bleibt also spannend!

Gruß, Timm

Timm
18.03.12, 14:31
http://www.tagesschau.sf.tv/Nachrichten/Archiv/2012/03/16/Vermischtes/Einstein-ungeschlagen-Cern-kapituliert?WT.zugang=front_top4

Damit scheint das Thema vom Tisch. Eigentlich schade, doch kein Tor in neue Physik.

Gruß, Timm