The physics anomaly no one talks about: What's up with those neutrinos?

20 years ago the LSND experiment at Los Alamos detected a strange anomaly in neutrino oscillations. In 2018 the Fermilab experiment MiniBooNE that was checking on this observation saw it too. The anomaly is above the discovery threshold. What does this mean for the standard model of particle physics?

Correction to what I say at 1 mins 55 seconds: "lepton" should have been "charged lepton" (in both instances).

Correction to what I say at 3 mins 33 seconds: It was the Nobel Prize for Physics in 2015 (as you see on the screenshot) not (as I mistakenly said) in 2011.

0:00 Intro
1:34 Reasons to like neutrinos
6:00 The LSND and MiniBooNe anomaly
8:45 What does it mean?
10:53 Sponsor Message

[SabineHossenfelder]

Hi Everybody 🙂🙂🙂 I can't be online on Saturday when this video goes live, but I'll check in later in the evening to reply to comments. Watch out for our second video today at 6pm!

[tenminuteretreat]

Sabine, please keep making these videos about what's NOT KNOWN in physics. It's these types of things that can really drive a person to want to study the field. I also appreciate you talking about situations where physics may be on the wrong track. Physics shouldn't be about jumping on the bandwagon of what's popular.

[jonathancamp]

Everybody, please join me in wishing Sabine Hossenfelder a Happy Birthday!
❤ 🎉🎊🎶 Happy Birthday, Sabine. 🎶🎊🎉 ❤

[jefbryant]

I remember reading about neutrinos 40 years ago. They had just built neutrino detectors and had calculated the predicted number of events from solar neutrinos. The estimates were off by 1/3. They had not hypothesized the neutrino mixing at that time.

[domainofscience]

Neutrinos are what got me into physics when I was 18 years old, and the more I learn about them the more fascinating they become!

[slowercuber]

"glaciers move faster than particle physics" -- love that turn of phrase, and wonderful video. Thank you.

[jcomm]

Thanks so much for making current science topics accessible to those who don’t have Phd’s! Your confidence in the public's abilities is truly heartwarming♡

[sheevys]

3:30 For anyone wondering, 2015 from the slide is correct. 2011 was a slip of tongue.

[informationinformation]

Thank you Sabine! I love when you go into this level of detail or more.

[kartikjoshi]

Happy birthday, Sabine, As a graduate student in theoretical physics, I find your videos are clear and precise,

[roberthcampbelljr]

I really enjoy many of Sabine's videos. Very informative; it's great to have critical thinkers for these complex issues. She can be a great "debunker" as well. She seems very objective and unafraid to step on anyone's "toes".

[TiagoMorbusSa]

Sabine's actual science is always great to hear about, but her animations and graphics are hilarious. Chef's kiss!!!

[oregondude]

Just started reading your book "Lost In Math". Love it so far. I like your dry "academic" sense of humor and wit in the book. Thanks for everything!

[KennyT]

3:52 A small correction: as far as I know, elementary particles don't get their masses by coupling to the Higgs boson. They get their masses by coupling to the Higgs field by exchanging the weak hyper charge. Higgs boson is the excitation of the Higgs field but it does not give the mass.

[johnlary]

Happy Birthday Sabine. You are the most interesting physics presenter on YouTube. Everybody else tries to explain what is right with physics. You, Sweet Sabine, try to explain what is wrong with physics.

[MedlifeCrisis]

Aha so this is what you were referring to!

[erolbakkalbasi]

The single best physics, or maybe even science channel, on Youtube. Thank you for not talking down to us.

[itsmootdamnitnotmute]

I really enjoy your videos. Your choice of content and presentation of it are "sticky". Being seriously attention-deficit heavy ADHD (clinically diagnosed at 54), I'm like a dog chasing squirrels all day in an open field while on YouTube - I've only got 1 set of jaws and there are just too many to catch and chew properly before dropping it for the next.

Watching your stuff is like taking a detour through heavy underbrush. I come away from it without a squirrel in my jaws and instead covered in burrs. I COULD still run around the field but if I don't sit down and tease them out of my fur right away, they're going to become more and more irritating until I do.

It's a weird-ass analogy, but apt. and the best I could put together without coming off as a gushing sapiophile.

Happy Birthday Sabine :-)

[alexgagnon]

It really has to come from the heart for me to take time commenting about this: I love this channel so much ❤It's as unbiased as can be, truthful and integrated. Gotta love these little puns as well 😂. I want this channel to never end 😏🙏

[doogleticker]

I have nothing but respect for your lucid and fascinating videos. May you live long and please keep up your impeccable work. With love from a secret admirer in France.