OPERA experiment reports anomaly in flight time of neutrinos

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Odgovori
Zoro
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Pridružen: 17.9.2011 18:00

OPERA experiment reports anomaly in flight time of neutrinos

Odgovor Napisal/-a Zoro » 27.9.2011 17:47

OPERA experiment reports anomaly in flight time of neutrinos from CERN to Gran Sasso

Geneva, 23 September 2011. The OPERA1 experiment, which observes a neutrino beam from CERN2 730 km away at Italy’s INFN Gran Sasso Laboratory, will present new results in a seminar at CERN this afternoon at 16:00 CEST. The seminar will be webcast at http://webcast.cern.ch. Journalists wishing to ask questions may do so via twitter using the hash tag #nuquestions, or via the usual CERN press office channels.

The OPERA result is based on the observation of over 15000 neutrino events measured at Gran Sasso, and appears to indicate that the neutrinos travel at a velocity 20 parts per million above the speed of light, nature’s cosmic speed limit. Given the potential far-reaching consequences of such a result, independent measurements are needed before the effect can either be refuted or firmly established. This is why the OPERA collaboration has decided to open the result to broader scrutiny. The collaboration’s result is available on the preprint server arxiv.org: http://arxiv.org/abs/1109.4897.
“This result comes as a complete surprise,” said OPERA spokesperson, Antonio Ereditato of the University of Bern. “After many months of studies and cross checks we have not found any instrumental effect that could explain the result of the measurement. While OPERA researchers will continue their studies, we are also looking forward to independent measurements to fully assess the nature of this observation.”
“The potential impact on science is too large to draw immediate conclusions or attempt physics interpretations. My first reaction is that the neutrino is still surprising us with its mysteries.” said Ereditato. “Today’s seminar is intended to invite scrutiny from the broader particle physics community.”
vir: http://press.web.cern.ch/press/PressRel ... 9.11E.html

Kaj menite o rezultatih eksperimenta, ki potrjujejo da nevtrini potujejo hitreje od svetlobne hitrosti?
Kakšne so posledice za fiziko in Teorijo relativnosti, če zgornja trditev bi bila uradno potrjena?
Gre za napako pri eksperimentiranju ali čisto resnico?


NIKKI
Prispevkov: 743
Pridružen: 24.3.2006 20:22

Re: OPERA experiment reports anomaly in flight time of neutr

Odgovor Napisal/-a NIKKI » 29.9.2011 12:32

Debata o tem eksperimentu je na:
viewtopic.php?f=21&t=3754&start=180

Zoro
Prispevkov: 9
Pridružen: 17.9.2011 18:00

Re: OPERA experiment reports anomaly in flight time of neutr

Odgovor Napisal/-a Zoro » 29.9.2011 16:21

Se opravičujem za prezvezno odprtje nove teme.
Hvala za informacije.

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shrink
Prispevkov: 14098
Pridružen: 4.9.2004 18:45

Re: OPERA experiment reports anomaly in flight time of neutr

Odgovor Napisal/-a shrink » 16.6.2012 1:39

Kot je tudi že Jure poročal na blogu, je tudi kolaboracija OPERA (pred tem ICARUS - sicer je bilo o tem govora v temi, ki je sedaj med izgubljenimi) z zadnjimi meritvami dokončno potrdila (kot tudi Borexino in LVD), da je šlo lani za napako in da nevtrini spoštujejo zgornjo mejo svetlobne hitrosti:

UPDATE 8 June 2012: Neutrinos sent from CERN to Gran Sasso respect the cosmic speed limit

Zgodba o nadsvetlobnih nevtrinih je s tem zaključena.

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