What does the Muon g-2 experiment tell us?

Рет қаралды 188,094

3 жыл бұрын

The Muon g-2 experiment announced one of the most tantalizing physics measurements in over a decade. It is possible that the measurement tells us that our theoretical calculation is missing some new physical phenomena. It is also possible that a new theoretical prediction points to the possibility that measurement and prediction basically agree. In this exciting video, Fermilab’s Dr. Don Lincoln gives you an insider’s perspective.
Playlist describing the Fermilab Muon g-2 experiment
• Muon g-2
Videos about Quantum Electrodynamics
Quantum Field Theory
• Quantum Field Theory
Feynman Diagrams
• Feynman diagrams
Theoretical Physics: Insider’s Tricks
• Theoretical physics: i...
Quantum electrodynamics: Theory
• Quantum electrodynamic...
QED: experimental evidence
• QED: experimental evid...
The physics of g-2
• The physics of g-2
Nature papers on lattice QCD
Leading hadronic contribution to the muon magnetic moment from lattice QCD
www.nature.com/articles/s4158... (subscription required)
Is the standard model broken? Physicists cheer major muon result
www.nature.com/articles/d4158... (commentary, no subscription required)
Fermilab experimental paper on the muon magnetic moment
Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm
journals.aps.org/prl/abstract... (technical paper)
Muon’s Escalating Challenge to the Standard Model
physics.aps.org/articles/v14/54 (popular science article)
Fermilab press release:
news.fnal.gov/2021/04/first-r...
Fermilab physics 101:
www.fnal.gov/pub/science/part...
Fermilab home page:
fnal.gov

Пікірлер: 549

@oreokid101v2 3 жыл бұрын

You've been explaining the recent happenings in the world of physics to me since I was a 12 year old boy. I'm now a 23 year old man with a bachelor's in physics and I feel even further from my dreams of contributing to experimental or theoretical physics in any significant capacity. I'll see you in a few years, hopefully with a PhD. :)

@oreokid101v2 3 жыл бұрын

@@jeffallen3382 Yeah, I'm not very active in the comments section 😅

@valentinmalinov8424 3 жыл бұрын

If is too difficult to make a contribution to experimental physics, why you do not try theoretical physics? The fact is that in the last 100 years there is no significant advance in the understanding of the fundamental elements as - What Energy is; What Electromagnetism is; What Time is; What Space is...Anyway, they are looking for a new physics, which can unify QM and TOR. Why you have not read my book - "Theory of Everything in Physics and The Universe"? It is possible that there you can find an idea for your great theoretical discovery, which will make you a great scientist. You will never succeed if you never try!

@kumar-qb2pe 3 жыл бұрын

@@valentinmalinov8424 yeah I'm also fascinated to think about these fundamentals from childhood and now I'm working in that way

@jansenart0 3 жыл бұрын

Learn controls engineering. There's no money in physics.

@valentinmalinov8424 3 жыл бұрын

@@kumar-qb2pe Very good! Keep going questioning the proposed scenarios with facts and logic and one day inevitably you will succeed to produce something unique and valuable. I will suggest you tackle this problem - What is this force, which is bending Einstein's space? Where is its origin and where it is going after bending Space?

@SlowToe 3 жыл бұрын

After all the hype I was waiting for Don's take on it. I'm not disappointed. Clearly explained with a pinch of charm.

@user-ex1fq6oz4p 3 жыл бұрын

He is the best!

@hajorm.a3474 3 жыл бұрын

Charismaaa

@franksavage1499 3 жыл бұрын

Yeah, I really can't understand why there is not millions of subscribers to this channel, this is so good, fun and easy to understand content :)

@drdon5205 3 жыл бұрын

@@franksavage1499 Tell all your friends to subscribe!

@franksavage1499 3 жыл бұрын

@@drdon5205 I will, I have shared a few videos and know that some of my friends have watched them :)

@tommylakindasorta3068 3 жыл бұрын

This is masterful science communication. I don't know who at the Fermilab office asked you to do the KZfaq channel, Dr. Don, but you have truly found your calling. You and everyone behind the scenes who's involved.

@beeheart6529 Жыл бұрын

I agree! I’ve tried for years to learn about subatomic particles with no success until I found this teacher!

@fikretonderbudakin2643 3 ай бұрын

Earth's gravitational waves contribute positively to the spin and kinetic energy of fermions. For this reason, since the muon is heavier than the electron, the muon has more magnetic power than the electron. Different laboratories around the world produce different results due to the different 'gravitational acceleration'. If the experiment were carried out in space, it would probably give the same result as the theory.

@_vicary 3 жыл бұрын

Finally, Don has spoken.

@davio14 3 жыл бұрын

The thing I love about Don's videos is how he stresses that in science, finding new questions can be as exciting as finding answers. A result which tells us "we don't know, we need to do more research" is actually a great result.

@theeniwetoksymphonyorchest7580 Ай бұрын

In some ways science is about finding better questions.

@MitzvosGolem1 3 жыл бұрын

Former BNL employee worked on that magnet on Long island NY . Proud 🤗

@AnotherGlenn 3 жыл бұрын

This channel is a gem. I have been repeatedly impressed by the content. It seems as though it would be digestible by a wide audience, despite the complexity of the subject matter. This video was particularly well made.

@AmbivalentMind 3 жыл бұрын

I could listen to him lecturing for hours. ☺️

@fantasia55 3 жыл бұрын

and I do!

@sudeeptaghosh 2 жыл бұрын

until my small brain overload..😥

@SuperStingray 3 жыл бұрын

Professor Frink: "g is exactly 2!" Audience: *gasps* Frink: "Very sorry that it had to come to that."

@turkfiles Ай бұрын

Dr. Lincoln is such a great teacher. His delivery is always enjoyable and very informative. The G-2 uncertainty has been cycling through my mind since first becoming aware of it.

@lk9650 3 жыл бұрын

Finally, a video we've all been waiting for.

@stephenaustin3026 3 жыл бұрын

I'd been looking forward to this! Back in April, I watched the live seminar when the results were first announced. It was incredibly well put together, and was the most compelling and informative scientific presentation I'd ever seen. Truly an outstanding model for scientific communication that should be studied by others.

@gardenlizard1586 3 жыл бұрын

Congrats to Fermi Lab on achievement

@RME76048 3 жыл бұрын

Excellent presentation, Dr. Don. Lots more info than you usually provide which is appreciated, but as always, presented in ways that allow most anybody with an interest in physics to follow along.

@KonekoEalain 3 жыл бұрын

Thank you for a digestible explanation of cutting edge science, love your videos Dr. Don!

@plexiglasscorn 3 жыл бұрын

This is the video I have been waiting for, best PR from Fermilab

@AnexoRialto 3 жыл бұрын

Best explanation I've heard/watched on the Muon g-2 experiment. As usual, Dr. Limon knows how to cut to the chase.

@chriszachtian 3 жыл бұрын

Thanks Dr. Don, this was great - and long expected!

@paulmace7910 3 жыл бұрын

It is amazing that there are human scientists that have the intelligence to understand stuff like this. Research like this is important, not because it has any immediate practical application, but because it furthers our understanding of our universe. Great work Femilab.

@TerranIV 3 жыл бұрын

Wow, thank you so much for such an in-depth quality explanation of the g-2 results!!! This is very exciting. Can't wait to find out what the different groups find over the next year or two!

@Isometrix116 2 жыл бұрын

I love that being wrong is the best and most exciting thing for a physicist

@joshuaadamstithakayoutubel2490 3 жыл бұрын

Thank you for explaining this

@guilleteru 3 жыл бұрын

Beautifully explained. You can sense his love for physics each team he explains something as fascinating as this. Thanks for explaining so well that even someone like me can understand

@liamcjbeistle3274 Жыл бұрын

In all, I would assume Feynman would be pleased if not jealous lol. I am thankful in your approach and inspiring a new generation of brilliance.

@darimshamsi2329 3 жыл бұрын

Hello Sir. Hope you are well. Take care!

@leshommesdupilly 2 ай бұрын

Wow, this level of precision is mind boggling !! This is remarkably amazing !! Ok, lets go back to ignore friction...

@EspritBerlin 3 жыл бұрын

Thanks for the video! A very exciting experiment!

@georgH 3 жыл бұрын

Excellent video, it's nice to have the long format again :)

@visavou 3 жыл бұрын

Thank you for making this video. Great explanation!

@beeheart6529 Жыл бұрын

You are such a good teacher! I am so happy to find it’s possible for me to understand what scientists say about subatomic particles, at least partially.

@abelgerli 3 жыл бұрын

Thank you so much. For a clear explanation of the facts so far.

@tj71520 2 жыл бұрын

I am a big fan of the videos presented on this channel. Very cool stuff.

@troeteimarsch 3 жыл бұрын

Thank you all at Fermilab for the great work you do for us all. I desperately hope that option 2 is the case, I really don't want to give up the sci-fi fantasies that come with it :)

@ericeaton2386 3 жыл бұрын

This was great, easily the best explanation I've heard. And I didn't know about the lattice computations! That's really important to the story, it should be reported with this topic more widely.

@TA-ve7ze 3 жыл бұрын

What an excellent video. Thank you Dr Don

@sukkrivaavijayan4493 2 жыл бұрын

Incredibly clear, you have a gift

@aportorak8575 3 жыл бұрын

This is my favorite series. Love it so much

@NalitaQubit Жыл бұрын

Thank you for teaching us complex concepts in such a down to earth way.

@portuguesepossum3165 3 жыл бұрын

I’m so grateful for these videos. Thank you for the work you put in for us that are of the Dummy Tribe.

@Ambienfinity 3 жыл бұрын

I joined the online seminar a few weeks ago -- even at 2am here in Britain, the excitement of breaking new ground was thrilling.

@stephencorben7875 3 жыл бұрын

Great to see you back Don

@justinmoorhead2632 2 жыл бұрын

Excellent explanation!

@jerrygundecker743 2 жыл бұрын

Dr. Lincoln, if I'm hearing you right, this research is going to help us go back in time and reach the speed of light. I'd settle for fewer ads on You tube.

@tresajessygeorge210 2 жыл бұрын

THANK YOU PROFESSOR LINCOLN...!!!

@casandramedina6108 3 жыл бұрын

Thank you very mich dr. Lincoln

@oscarmendez590 3 жыл бұрын

Thanks for covering this topic.

@GlennElert 3 жыл бұрын

Your best post ever Dr. Lincoln.

@vitostan3134 3 жыл бұрын

The best at explaining complex ideas.

@asdfasdf71865 3 жыл бұрын

Nice video. Thanks.

@Dragon32z 3 жыл бұрын

summed up, "we could be wrong, we don't know why, but we are oddly happy because of it".

@redcirclesilverx4586 2 жыл бұрын

Amazing, just learned about your channel from pbs space time. Excited to deep dive!

@golemtheory2218 2 жыл бұрын

Congrats to Don and the Fermilab team. An fresh alternative to CERN

@juzoli 3 жыл бұрын

It reminds me to the GPS system inaccuracy. If we wouldn’t know about relativity, the GPS system clock would be off by 38 microseconds per day. It sounds to be just as small and insignificant, than the difference in this Muon experiment. But this little inaccuracy both leads to kilometers of inaccuracy in real world usage, and a whole new physics which changed how we understand the universe forever.

@henrytjernlund 3 жыл бұрын

Speaking of which, what if this tiny difference is an effect of gravity?

@artienia7908 3 жыл бұрын

@@henrytjernlund it is

@juzoli 3 жыл бұрын

@@henrytjernlund Gravity is way weaker than that. But you can believe, since gravity is the 4th fundamental force, and on the top of the lost of the biggest challenges in physics, it is always on the top of the list of ideas for explaining anything mysterious.

@davidespano8674 3 жыл бұрын

Engineers would have fixed the problem anyway empirically and have it work nevertheless. The truth is that we will never be able to know everything or know everything as our lifespans are limited and at some point the learning process as optimized as it could possibly be will reach its generational best. Problems will have to be fixed empirically and be at peace with that.

@juzoli 3 жыл бұрын

@@davidespano8674 Yeah, they would add some magical x multiplier, because that’s what they measure. Just like we add cosmological constant, and call it “dark energy”. But understanding WHY we need that correction is a whole different story.

@w0tch 3 жыл бұрын

Best explanation so far

@taknothing4896 3 жыл бұрын

Best explanation yet.

@mattcontact1 3 жыл бұрын

You're so fascinating. I don't always understand what you're saying but I'm fascinated all the same.

@FobbitMike 3 жыл бұрын

Good job, Doc.

@simian_essence 3 жыл бұрын

Loved this deep dive! What better place to get this dive than right from the Fermilab's (horse's) mouth. I've got my fingers crossed for new physics!!

@tedlis517 3 жыл бұрын

Love this. So many of the early attempts to communicate the results of the BH and Fermi Lab experiments focus on “new physics” and completely ignored the lattice QCD results. Either way, bravo to all the scientists involved in the new computer calculations and in gathering the new experimental data. I can’t wait to learn how the next sets of experimental results and confirmation calculations turn out!

@jimc.goodfellas226 3 жыл бұрын

This guy always explains things that I can't understand when someone else is saying it

@yojiviriak675 3 жыл бұрын

Awesome Don

@quantumkarthik 2 жыл бұрын

It is wistful to see that this alluring experiment was left behind by the Nobel Committee

@keplerthe3399 3 жыл бұрын

I've been waiting for this

@avejst 3 жыл бұрын

Impressive video 👍😀

@nikolaos9175 3 жыл бұрын

I'm a simple man, I see a Fermilab video, I hit like.

@cosmosgato 3 жыл бұрын

Waiting for you sir! You make advance science easily digestible for the common man.

@chiseldrock 9 ай бұрын

thanks Don.

@itsawonderfullife4802 3 жыл бұрын

Thankx Doc.

@wulphstein 3 жыл бұрын

In the expanding graviton model, gravitons are always coming into existence, expanding from a point, and overlapping. When large numbers of expanding gravitons overlap, they inevitably create the geometries for particle-anti-particle creation. When gravitons overlap and create the geometries for particles/antiparticles, that's the same as creating virtual particles.

@krumplethemal8831 6 ай бұрын

Interesting, do the gravitons lose energy when the overlap produces the particle anti particle pair?

@OslerWannabe 3 жыл бұрын

I gotta say, I kind of like this new, more subdued Don Lincoln. I hate to sound critical at all, because he and this channel are absolutely great. But now it's Great+.

@lorenzobarbano8022 3 жыл бұрын

I've been waiting for this video for a few years😍

@PMA65537 3 жыл бұрын

I waited so long all my muons decayed.

@lorenzobarbano8022 3 жыл бұрын

@@PMA65537 How fast were they going???

@PMA65537 3 жыл бұрын

@@lorenzobarbano8022 You should have seen the Lorenzo transform!

@pmiecz 3 жыл бұрын

Much appreciated, thx.

@hubertheiser 3 жыл бұрын

The more we know, the less we know :-) Anyway, thank you very much for this clear explanation of where science stands in this particular problem.

@alphagt62 3 жыл бұрын

That’s a good version of the old Einstein quote, “The more I learn, the less I know”.

@KaiHenningsen 3 жыл бұрын

@@alphagt62 I much prefer the version "The more we know, the more we know how little we know". Which incidentally is also related to good ol' Dunning-Kruger: when you know just a little, you have no idea how little you know, so you assume you know everything there is to know.

@OslerWannabe 3 жыл бұрын

No, not quite. The more we know, the more we know about how little we know, and the more we know about where to look next.

@TonyP9279 3 жыл бұрын

That's basically how real science works: You discover new questions.

@karaloop9544 2 жыл бұрын

@@KaiHenningsen I've come to liken that effect to an expanding circle where the outside is the unknown and the inside already accrued knowledge. The larger the circle of knowledge, the longer the boundary to the unknown becomes.

@sapelesteve 3 жыл бұрын

Great video Dr. Don! So, basically what you are saying is that we don't know what we think we know until we know it and even then the answer might be wrong or right depending on how you look at it. 😉😉😂😂

@drdon5205 3 жыл бұрын

Welcome to my world.

@teashea1 3 жыл бұрын

so excellent

@n1k0n_ 3 жыл бұрын

SCIENCE! MR DON!

@aashsyed1277 3 жыл бұрын

0:30 that epic music is so satisfying

@patrickaycock3655 3 жыл бұрын

Intro music is epic. Feels like im about to meet a hero. Wait a minute.... Its dr. don lincoln.... a hero. 😯

@rajeevk.pathak771 3 жыл бұрын

Dr. Donald Lincoln elucidates things so that they are palatable for all! He re-emphasizes the Einsteinian statement, which goes something like---- "The propensity for exploring the unknown, the quest for delving out reality, is far important than any 'assured possession' in science"

@bigsarge2085 3 жыл бұрын

Fascinating stuff.

@nicknorthcutt7680 2 жыл бұрын

Thanks, a very good explanation to the lamen like myself! 😁

@Galadonin Жыл бұрын

Really great video, especially to get context about the experiments in fermilab If I may, I just have small "advice" : (Idk your budget, and I really mean well, we need more educational videos, especially on quantum mechanics. If the green screen is not used, you can maybe used a set, with half the screen for the key points. A little bit of cuts in the editing, I'm amazed that you can get a lot of these script without cuts, but it can add a bit a rhythm in the video, less breathing noises. Microphone aren't cheap, but it peaks a little bit to much, I think the clip on mic doesn't help The lightning is bright, which maybe necessary because of the green screen, but it seems that the light is not diffused, or not enough. I don't know if you'll se this comment, but please keep posting, those small notes aren't that important. I'm just nitpicking about details. A lot of science channels use green screen with a space background. Some onsite set can boost the production, especially for fermilab, it would be so great ! Btw your generic is AWESOME ! Great production, seems legit.

@DavidKennyNZL 3 жыл бұрын

thanks

@andy16666 3 жыл бұрын

Need a good tailor there bud. Great video!

@jimbuono2404 3 жыл бұрын

The fields that make up space in the time/space continuum are only superficially understood. While we have some knowledge from experiments, our understanding is limited to the results of those experiments. It's like never having seen 4 types of fruit grown on Rigel 4, being blindfolded, and asked to identify each by touch. You know they feel different but as to understanding what they are, well, you've only scratched the surface.

@rickharold7884 3 жыл бұрын

Awesome. Love it

@RFC-3514 3 жыл бұрын

11:49 - He launched into that sentence expecting it to be shorter than it turned out to be. It's like when you pick up speed on a bike before starting to climb a hill, and suddenly realise you're going to have to pedal if you want to actually reach the top.

@YaMumsSpecialFriend 3 жыл бұрын

Fascinating 🖖🏼

@seangordon9164 10 ай бұрын

Can we have an updated video with the new results please!!

@HackersSun 3 жыл бұрын

Wow that's interesting It takes sooo long for the results but well worth the wait

@Fraiser2024 3 жыл бұрын

Great explanation. I wonder... in this experiment muons need to go fast so they have enough livetime due to relativistic effects. How fast? Are other relativistic effects to consider? For example in their interactions with virtual particles... thanks!

@jmcbri 10 ай бұрын

Time for an update! 😊

@SimonSozzi7258 3 жыл бұрын

FINALLY! I'm like "Where's my Fermi Dude?" I need a breakdown... in the upside, I've been briefed.

@TheReaverOfDarkness 3 жыл бұрын

Do you think that quantum computers will eventually help calculate the lattice QCD?

@makeracistsafraidagain 3 жыл бұрын

Fascinating

@Mckeycee 3 жыл бұрын

@8:12 "what does it all mean? Well first, lets be honest, we don't know." lol

@Linguae_Music 3 жыл бұрын

Shitttt boi Don is lookin' CRISP today.

@tomfeiler5934 2 жыл бұрын

Love u guys :*

@martynewport Жыл бұрын

Excellent! Are new results in? Because it is middle of 2022? Hope a new video on this soon

@Lucius_Chiaraviglio 2 жыл бұрын

The addition of Lattice QCD to the calculation seems to account for only roughly half of the discrepancy (and still doesn't make the error bars overlap), so something else must be also going on.