/r/neutrinos

Photograph via snooOG

A place for learning about and discussing neutrino physics, one of the most active areas of research within particle physics.

A place for learning about and discussing neutrino physics, one of the most active areas of research within particle physics.


Related subreddits:

/r/neutrinos

512 Subscribers

3

Tour a particle accelerator, ask real scientists questions and more at Jefferson Lab.

The Thomas Jefferson National Accelerator Facility in Newport News, VA is having its biennial open house tomorrow Saturday June 8 from 9am-3pm, admission and parking is free. Learn about superconducting materials, supercomputers, particle accelerators, particle detectors, nuclear physics research and much more. See our web page for more information.

0 Comments
2024/06/07
13:07 UTC

4

Tour a particle accelerator, ask real scientists questions and more at Jefferson Lab.

The Thomas Jefferson National Accelerator Facility in Newport News, VA is having its biennial open house on Saturday June 8 from 9am-3pm, admission and parking is free. Learn about superconducting materials, supercomputers, particle accelerators, particle detectors, nuclear physics research and much more. See our web page for more information.

0 Comments
2024/03/04
17:04 UTC

4

Question: how did we confirm experimentally that there are there flavors of neutrinos?

Lepton flavor is conserved at the weak vertex, I assume this gives us a way to tune an experiment to one of the neutrino flavors, but I since there are more electrons around than muons or tau, doesn't this mean that the vast majority of what we detect will be electron neutrinos? How did we confirm the existence of muon or tau neutrinos?

5 Comments
2023/11/30
20:31 UTC

5

Is this correct? Meon number is not conserved as I think

9 Comments
2023/05/11
18:06 UTC

0

Is it true that there is no such thing as a neutron star?

I heard that, and I'm both disappointed and concerned.

4 Comments
2023/02/07
16:55 UTC

3

[Question] I'm currently looking into applications for detecting reactor neutrinos and the main one is seeing if some of the reactor fuel is being enriched for nuclear weapons

A lot of the papers I've read suggest this application is possible but I haven't seen anything definitive saying it's happened already. So my question is, has it? Is there anything currently in place today or is this application still in R&D?

1 Comment
2022/12/04
14:20 UTC

4

OC: Galactic Neutrinos discovered in IceCube for the first time!

0 Comments
2022/11/11
15:06 UTC

2

Neutrino questions and discussion weekly thread

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

2 Comments
2022/09/21
09:00 UTC

2

Some neutrino questions...

If a neutrino is produced and detected in effectively vacuum, AND the state oscillates completely adiabatically at all points in between, AND the baseline isn't known precisely so you can't know say how many oscillations any individual neutrino has gone through, then can there be any observed matter effects in the mixing? Or do you only observe matter effects if the matter potential at the production/detections points differ, or if some non-adiabatic transition happens?

I'm thinking specifically about the day-night effect for solar neutrinos, where you don't know the baseline distance well enough to discern individual oscillations, so you just get averaged survival/transition probability. Basically my question is does the day-night effect being observable require some non-adiabatic transition in the Earth? If the Earth didn't have abrupt transitions would there be no significant day-night effect?

What are some good resources for learning about the cosmological constraints on the number of neutrinos, and on the neutrino mass and any other common neutrino constraints from cosmology. I know there's some info about neutrinos to be gleaned by looking at the CMB b/c the CNB was produced just before the CMB and that left some variety of imprint. But I don't think I've ever had a good explain-it-like-I'm-5 explanation and I think that's what I need b/c my understanding of the subject is pretty bad. So if anyone has anyone knows any good resources on that subject I'd be appreciative.

3 Comments
2022/09/18
19:30 UTC

3

How do we know neutrinos aren’t “Dark Matter”?

1 Comment
2022/09/15
09:28 UTC

3

How often do neutrinos collide with one another?

3 Comments
2022/09/14
12:17 UTC

2

Neutrino questions and discussion weekly thread

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

0 Comments
2022/09/14
09:00 UTC

2

Neutrino questions and discussion weekly thread

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

0 Comments
2022/09/07
09:00 UTC

2

Neutrino questions and discussion weekly thread

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

0 Comments
2022/08/31
09:00 UTC

2

Neutrino questions and discussion weekly thread

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

0 Comments
2022/08/24
09:00 UTC

2

Neutrino questions and discussion weekly thread

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

0 Comments
2022/08/17
09:00 UTC

2

Neutrino questions and discussion weekly thread

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

4 Comments
2022/08/10
09:00 UTC

3

Neutrino questions and discussion weekly thread

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

0 Comments
2022/08/03
09:00 UTC

2

Neutrino questions and discussion weekly thread

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

0 Comments
2022/07/27
09:00 UTC

2

Neutrino questions and discussion weekly thread

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

7 Comments
2022/07/20
09:00 UTC

4

The history of the limit on the number of light active neutrinos on the electroweak side: from N<6000 to N=2.98+-0.01 [twitter thread]

0 Comments
2022/07/15
21:27 UTC

2

Neutrino questions and discussion weekly thread

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

0 Comments
2022/07/13
09:00 UTC

3

Neutrino questions and discussion weekly thread

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

0 Comments
2022/07/06
09:00 UTC

2

Neutrino questions and discussion weekly thread

Ask your neutrino related questions and discuss recent neuws in this thread.

Please read the sidebar and remember to follow reddiquette.

0 Comments
2022/06/29
09:00 UTC

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