Neutrinos are light, uncharged leptons. The neutrino tag should be applied to question relating to neutrino properties or interactions involving neutrinos.
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1answer
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Do neutrinos 'become' other types of particles between oscillations?
In light of the recent kurfuffle of FTL neutrinos I wonder, do neutrinos 'become' other particles between their oscillations between the different flavors of neutrino? I'm slightly familiar with ...
2
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1answer
201 views
Spacetime assumptions at OPERA
I would like to know what are the assumptions about the spacetime metric between the neutrinos emiter and detector, I mean, perhaps (just a stab in the dark) could be a mistake to asume the metric of ...
2
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3answers
364 views
If it turns out that neutrinos do travel at faster than lightspeed, how will the success of special relativity be explained?
As per in the title. If it turns out that neutrinos do travel faster than the speed of light, how will the success of special relativity be explained? My apologies if this has been asked before; I've ...
4
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2answers
312 views
Where did the idea of a neutrino come from?
Exactly what paper by W. Pauli introduced the idea for the existence of a neutrino and how was its existence confirmed experimentally (who did that and in what paper)?
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3answers
257 views
How to take into account the reference frames with the revolution and rotation of the Earth in OPERA's superluminal neutrinos?
Since the Earth is moving around the Sun, which is moving around Milky Way, etc... What reference frame is used for the complete motion of the begin/end points (which are non-inertial right?)?
6
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2answers
202 views
How is the distance between Geneva detector and the Gran Sasso one measured?
Does anyone know how is the distance between detectors in the now famous neutrino experiment measured? Also, how was the time of flight measured?
10
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2answers
370 views
Reproducing the OPERA result
Are there any other facilities that would be capable of independantly verifying the opera result? In other words, a completely different source/detector for $\nu_{\mu}$ beams?
Alternatively, there ...
4
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2answers
392 views
The Opera Neutrino Experiment and the Supernova 1987
So this probably stems from my massive ignorance about post-Newtonian physics but the supernova results of 1987 which measured neutrinos arriving 3 hours before the light from the supernova have been ...
3
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0answers
477 views
Can neutrinos travel faster than the speed of light? [duplicate]
Possible Duplicate:
Superluminal neutrinos
What would be the immediate effects if light does not go at the maximum speed possible?
This is a hot topic right now, so I thought we should ...
4
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1answer
706 views
What do “tachionic” neutrinos mean for QG?
Reading about the spectacular Opera claim, I`m (again ;-P) wondering if a confirmation of superliminous neutrinos could help settle some still open quantum gravity issues ...?
In this post, Lumo ...
12
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1answer
303 views
How are neutrino beams emitted at CERN?
As far I know they come from accelerator collisions, but I have read confusing things like magnetically focused. How could neutrinos be guided magnetically if they aren't affected by
the ...
1
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0answers
296 views
What are the implications of superliminal neutrinos? [duplicate]
Possible Duplicates:
What would be the immediate effects if light does not go at the maximum speed possible?
Superluminal neutrinos
Do we re-write physics? Or can it be fitted in current ...
12
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3answers
91 views
If neutrinos travel faster than light, how much lead time would we have over detecting supernovas?
In light of the recent story that neutrinos travel faster than photons, I realize the news about this is sensationalistic and many tests still remain, but let's ASSUME neutrinos are eventually proven ...
31
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5answers
146 views
Models of neutrinos consistent with OPERA's results
I guess by now most people have heard about the new paper (arXiv:1109.4897) by the OPERA collaboration which claims to have observed superluminal neutrinos with 6$\sigma$ significance. Obviously this ...
15
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2answers
1k views
What happened to the idea of tachyonic or other superluminal neutrinos?
While hunting around for information about the recent OPERA measurement that hints at superluminal neutrinos, I discovered that this idea was actually considered back in the 1980s. Wikipedia lists as ...
15
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6answers
4k views
What would be the effects on theoretical physics if neutrinos go faster than light?
Earlier today, I saw this link on Facebook about neutrinos going faster than the speed of light, and of course, re-posted. Since then, a couple of my friends have gotten into a discussion about what ...
59
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13answers
6k views
Superluminal neutrinos
I was quite surprised to read this all over the news today:
Elusive, nearly massive subatomic particles called neutrinos appear to travel just faster than light, a team of physicists in Europe ...
1
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1answer
123 views
Elastic collisions with neutrinos
1: Do neutrinos undergo elastic collisions with fermions?
2: Would this imply a variable speed for neutrinos?
3: Can neutrinos transfer momenta in interactions?
3
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1answer
298 views
Microsecond trading with neutrinos
The Spread Networks corporation recently laid down 825 miles of fiberoptic cable between New York and Chicago, stretching across Pennsylvania, for the sole purpose of reducing the latency of ...
-1
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1answer
148 views
muon neutrino momentum distribution
muon neutrino momentum distribution
I have read the public data of T2K ,KEK to find this subject, I'm curiously that it's coincides with my prediction perfectly: The neutrino get its momemtum by its ...
4
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2answers
238 views
Sterile Neutrinos as Dark Matter
There has been recent activity by astrophysicists to determine whether a fourth flavor of neutrino, a sterile neutrino, exists. It would likely be more massive than electron, muon or tau neutrinos. ...
4
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1answer
328 views
Neutrino Speed in Supernova
I've read that neutrinos in supernova can be affected by "neutrino refraction." Is this analagous to the refraction of light, and if so, is the speed of these neutrinos similarly reduced from their ...
8
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4answers
409 views
strange modulation of radiactive decay rates with solar activity
Recently i found out this uber strange article about nuclear decay rates being somehow showing seasonal variations with a high correlation with sun activity. Two very precise questions:
1) has this ...
4
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4answers
412 views
Neutrino versus Anti-neutrino Detection
Is there a that detection method in use that can distinguish between a neutrino from its anti-neutrino?
3
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1answer
152 views
Solar neutrino predictions
The solar neutrino problem has been "solved" by discovering that neutrinos have mass and they oscillate. So how accurate are now our predictions about the number and types of solar neutrinos that ...
11
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4answers
1k views
Are neutrinos Majorana particles?
That is, are they identical to their anti-particles? (Any results of double beta decay experiments?)
4
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4answers
544 views
Why are neutrino oscillations considered to be “beyond the Standard Model”?
Is this just a historical artifact - that the particle physics community decided at some point to call all of the pre-oscillation physics by the name the "Standard Model"? The reason I ask is because ...
3
votes
1answer
330 views
neutrinos by formation of “neutron pairs”
Here :
http://www.newscientist.com/article/dn20084-neutron-star-seen-forming-exotic-new-state-of-matter.html
are news on superfluidity in a neutron star. The necessary bosons they say are pairs of ...
1
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1answer
371 views
How to calculate the density of relic neutrinos?
May be not neutrinos, but antineutrinos? Or both types?
In the last case, why they didn't annihilate and what is the ratio of relic neutrinos to relic antineutrinos? Is that ratio somehow related to ...
8
votes
2answers
633 views
How can neutrinos oscillate though the lepton flavors have differing masses?
Since the total mass-energy for the neutrino presumably does not change when a neutrino changes lepton flavor, though the mass is different, what compensates for the gain or loss of mass? Does the ...
9
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5answers
647 views
