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"Everything should be as simple as it is, but not simpler", Albert Einstein
Browsing All posts tagged under »Opera experiment«
ICARUS: Neutrinos Travel At Light Speed. Period.
By Tommaso Dorigo Little less than one year ago the world of fundamental physics was shaken by the bold claim of the OPERA collaboration, which produced a measurement of the time of flight of neutrinos traveling underground from Geneva to the Gran Sasso mine in central Italy. The beam of neutrinos, produced by the CERN SpS […]
Error Undoes Faster-Than-Light Neutrino Results
February 22, 2012
by Edwin Cartlidge 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. Physicists had detected neutrinos travelling from the CERN laboratory in Geneva to the Gran Sasso […]
Are OPERA neutrinos faster than light because of non-inertial reference frames?
January 22, 2012
Claudio Germana ABSTRACT Recent results from the OPERA experiment reported a neutrino beam traveling faster than light. The experiment measured the neutrino time of flight (TOF) over a baseline from the CERN to the Gran Sasso site. The neutrino beam arrives 60 ns earlier than a light ray would do. Because the result has an […]
Neutrinos still faster than light in latest version of experiment
November 18, 2011
OPERA experiment reports anomaly in flight time of neutrinos from CERN to Gran Sasso UPDATE 18 November 2011 Following the OPERA collaboration’s presentation at CERN on 23 September, inviting scrutiny of their neutrino time-of-flight measurement from the broader particle physics community, the collaboration has rechecked many aspects of its analysis and taken into account valuable […]
Testing the Special Relativity Theory with Neutrino interactions
November 4, 2011
P.W. Cattaneo Abstract A recent report of superluminal neutrinos from the OPERA experiment appears in contradiction with prediction of energy loss of superluminal neutrino via the pair creation process ν → νe+e−. The same process should result in isolated e+e− pairs in detectors with good tracking capability traversed by a large flux of high energy neutrino like NOMAD. […]
Faster-than-light neutrino experiment to be run again
October 28, 2011
Scientists who announced that sub-atomic particles might be able to travel faster than light are to rerun their experiment in a different way. This will address criticisms and allow the physicists to shore up their analysis as much as possible before submitting it for publication. Dr Sergio Bertolucci said it was vital not to “fool […]
Neutrino watch
October 19, 2011
… Speed claim baffles CERN theoryfest Even a meeting of elite minds at Europe’s top particle physics lab couldn’t do it: reconciling neutrinos that appear to break the cosmic speed limit with the laws of physics is still beyond us. However, a paper on the speeding neutrinos has been accepted for publication and the first […]
ICARUS Refutes Opera’s Superluminal Neutrinos
October 18, 2011
The saga of the superluminal neutrinos took a dramatic turn today, with the publication of a very simple yet definitive study by ICARUS, another neutrino experiment at the Gran Sasso Laboratories, who has looked at the neutrinos shot from CERN since 2010. The ICARUS team jumped on the chance to test the Opera result based on […]
Two exercises about neutrino departure times at CERN
October 15, 2011
Bernd A. Berg, Peter Hoeflich Two simple exercises are solved, which educators can use to awake interest of their students in subtleties of the CERN Neutrino beam to Grand Sasso (CNGS) experiment. The first one is about the statistical error of the average departure time of neutrinos from CERN. The second one about a hypothetical […]
Faster-Than-Light Neutrino Puzzle Claimed Solved by Special Relativity
October 14, 2011
The relativistic motion of clocks on board GPS satellites exactly accounts for the superluminal effect, says physicist It’s now been three weeks since the extraordinary news that neutrinos travelling between France and Italy had been clocked moving faster than light. The experiment, known as OPERA, found that the particles produced at CERN near Geneva arrived […]
The neutrino song
October 12, 2011
“Toor a loo, toor a loo, toor a loo, toor-a-lino, is light now slower than a neutrino?” is the question of Corrigan Brothers…. http://youtu.be/vpMY84T8WY0
New theories emerge to disprove OPERA faster-than-light neutrinos claim
October 6, 2011
– It’s been just two weeks since the Oscillation Project with Emulsion-tRacking Apparatus (OPERA) team released its announcement claiming that they have been measuring muon neutrinos moving faster than the speed of light, causing an uproar in the physics community. Since that time, many papers (perhaps as many as 30 to the preprint server arXiv […]
Live Chat: Have Neutrinos Broken the Speed Limit of Light?
September 28, 2011
Nothing can go faster than light, right? Einstein said so. But last week a group of researchers in Italy announced that they’d measured the speed of thousands of neutrinos (tiny, almost massless particles that were fired at their detector from the CERN particle physics lab 730 kilometers away) and found they were traveling slightly faster […]
Saving both super-luminal and SN1987A neutrinos?
September 27, 2011
Inconsistence of super-luminal Opera neutrino speed with SN1987A neutrinos burst and with flavor neutrino mixing Recent news from Cern Opera experiment seem to hint for a muon neutrino faster than light, maybe tachyon in nature. If all neutrino are just tachyon their arrival (at 17 MeV) will be even much faster than 17 GeV Opera […]
Apparent Lorentz violation with superluminal Majorana neutrinos at OPERA?
September 27, 2011
F. Tamburini , Μ. Laveder From the data release of OPERA – CNGS experiment, and publicly announced on 23 Septem- ber 2011, we cast a phenomenological toy model based on a Majorana neutrino state carrying an imaginary mass term, already discussed by Majorana in 1932. This imaginary term can be a fictious term induced by […]
Superluminal neutrinos from String Theory
September 25, 2011
1. Crete Center for Theoretical Physics A remarkable claim has been made by the OPERA experiment, that takes a neutrino beam from CERN and studies its interactions inside the Gran Sasso laboratory in central Italy. As described in their paper http://fr.arxiv.org/abs/1109.4897 submitted to the ArXiV, they have measured the velocity of the neutrinos and found […]
Stephen Hawking for the OPERA experiment
September 24, 2011
A British physicist even promised to eat his boxer shorts on live television if it turned out to be correct. Scientists at CERN, the world’s largest physics lab near Geneva, stunned the world of science on Thursday night by announcing they had observed tiny particles known as neutrinos travelling slightly faster than light. The claim […]
Potential mistakes in the Opera research
September 24, 2011
Almost all theoretical oriented physicists including myself seem to feel almost certain that there is a mistake in the Opera paper and the claimed violation of the relativistic speed limit will go away. On the other hand, I think that many people who like technology etc. were impressed by the precision work that the Opera […]
The Phantom of OPERA
September 24, 2011
Those working in science are accustomed to receiving emails starting with “dear sir/madam, please look at the attached file where I’m proving einstein theory wrong”. This time it’s a tad more serious because the message comes from a genuine scientific collaboration… As everyone knows by now, the OPERA collaboration announced that muon neutrinos produced at […]
Some Comments on the Faster Than Light Neutrinos
September 23, 2011
Matt Strassler The OPERA experiment has now presented its results, suggesting that a high-energy neutrino beam has traveled 730 kilometers at a speed just a bit faster than the speed of light. It is clear the experiment was done very carefully. Many cross-checks were performed. No questions were asked for which the speaker did not […]
Conclusions from OPERA experiment
September 23, 2011
EP Seminar “New results from OPERA on neutrino properties“ by Dario Autiero (Institut de Physique Nucleaire de Lyon) Friday, September 23, 2011 from 16:00 to 18:00 (Europe/Zurich)
Dimension-hop may allow neutrinos to cheat light speed
September 23, 2011
A CERN experiment claims to have caught neutrinos breaking the universe’s most fundamental speed limit. The ghostly subatomic particles seem to have zipped faster than light from the particle physics laboratory near Geneva, Switzerland, to a detector in Italy. Fish that physics textbook back out of the wastebasket, though: the new result contradicts previous measurements […]
Measurement of the neutrino velocity with the OPERA detector in the CNGS beam
September 23, 2011
The OPERA neutrino experiment at the underground Gran Sasso Laboratory has measured the velocity of neutrinos from the CERN CNGS beam over a baseline of about 730 km with much higher accuracy than previous studies conducted with accelerator neutrinos. The measurement is based on high-statistics data taken by OPERA in the years 2009, 2010 and […]
Neutrinos Travel Faster Than Light, According to One Experiment
September 22, 2011
Read also: A Six-Sigma Signal Of Superluminal Neutrinos From Opera! If it’s true, it will mark the biggest discovery in physics in the past half-century: Elusive, nearly massless subatomic particles called neutrinos appear to travel just faster than light, a team of physicists in Europe reports. If so, the observation would wreck Einstein’s theory of […]
A Six-Sigma Signal Of Superluminal Neutrinos From Opera!
September 19, 2011
By Tommaso Dorigo The news is all in the title. A unconfirmed rumor from the Opera experiment (see picture below), the neutrino underground detector in the Gran Sasso cavern in central Italy, tells that a measurement has been performed on the time that muon neutrinos take to travel from their production point at CERN to […]
August 14, 2012
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