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Posted by EvgeniyZh 10/23/2024

Yes, we did discover the Higgs(theoryandpractice.org)
281 points | 150 commentspage 2
plorg 10/25/2024|
I think the person this article is responding to is just a crank, but it is interesting as a layperson to see the basic mechanisms for making this discovery laid out here.
scrubs 10/24/2024||
Good gracious! C'mon! ... science people want science not nonsense not cheap symbolism.

The article to which the link responds is cynical. And in my experience cynical assessments are made by people more likely to engage in the cynical BS artistry they complain about. Moreover, social media in general in conducive to whining, and what-about-ism which detracts from what science and all natural philosophers take seriously.

We're trying really hard to get away from the shadows on the the cave wall to the light whenever possible, and as often as possible.

And you know what else? The ``rush" is huge when we do so. There's a difference.

gklitz 10/26/2024||
Any fool on a hill can confidently state that they don’t believe in gravity because there’s no proof for it and the matematisk theories are all complicated and bureaucratic. Why should he believe it?

But so what?

haccount 10/25/2024||
The original blog post have a point in that much of scientific "established fact" springs from prestigious committee with great fanfare, a chain of reasoning is established, it's cast forth with great force and splashes into a brainless media dissemination apparatus and that's the truth we're stuck with for, give or take, a human lifetime.

Though specifically making it an argument about particle physics results in a rather nebulous punching power against something for most of us have very weakly defined.

I might digress but cosmologists deserve focal criticism like this more for the cocksure way they've sold dark matter and the age of the universe. Both the phlogiston and the luminiferous aether was discarded after less contradictory observations than we today have against the former.

Vecr 10/24/2024||
It's lucky the predictions almost exactly matched. Otherwise the inference would have been a nightmare.
rsynnott 10/25/2024||
On the other hand, it would arguably have been more interesting had they not.
j_maffe 10/25/2024||
We have enough "interesting" things going on in particle physics. We needed a strong discovery is there haven't been as many of those as of late.
adrian_b 10/25/2024||
However the earlier predictions about which will be the energy where the resonance will be observed had been wrong.

The predictions have been revised a few times upwards after not finding a resonance at the predicted lower energies, then they have been proven wrong again and the cycle has been repeated until the actual discovery.

Vecr 10/25/2024||
They got the simulation based inference going though, right? How high can they crank up the energy and still have that work?
vurtdee 10/24/2024||
> This bump is what physicists call a resonance. It follows directly from energy and momentum conservation and special relativity that we teach first year undergraduates (hardly the ivory towers).

> This bump or resonance is intimately tied to what physicists mean when they say ‘particle’. If you dig a bit deeper, the term resonance is also tied to one of the most elementary physical systems: the simple harmonic oscillator. Sure, when you treat these things quantum mechanically, it gets more sophisticated, but my point is it doesn’t require highfalutin mathematics and quantum field theory to say that we discovered a new particle at the LHC.

Goes on to completely omit this apparently trivial mathematics.

verzali 10/24/2024||
It doesn't take much to look it up: https://en.wikipedia.org/wiki/Harmonic_oscillator
lifthrasiir 10/24/2024|||
I assume that you do need maths but not something developed only decades ago. That's what physics students learn today and represent a very conservative body of knowledge, which would be never trivial though.
yk 10/25/2024|||
real data - background model = bump

This is all just counting statistics, it actually is that simple. (The resonance equals particle is quite a bit more complex, but for a basic treatment the bump is a particle could probably just be understood as jargon.)

jiggawatts 10/25/2024||
> Goes on to completely omit this apparently trivial mathematics.

You're being somewhat unfairly downvoted because "now draw the rest of the fucking owl" is a huge problem in modern physics. All too often it turns out that the person teaching owl drawing has never seen an owl, has no idea how to draw any animal, but can explain at length the differences between the various pencil types.

For example, I've never seen a satisfactory definition of what a particle is as defined by modern field theory.

Either you get a hand-wavey "it's an excitement of the field" with zero elaboration, or they talk only about the secondary properties of the particles such as their symmetries.

Imagine explaining cars in one of only two ways, and flat refusing to ever describe them in any other terms:

1. Cars are personal automobiles with three or more wheels.

2. Cars are largely left-right symmetric objects that can fit into a tunnel but not through a sieve. When set into motion they have a decreased longitudinal resistance compared to lateral. If two cars are smashed together a loud siren noise can often be briefly heard after a delay of a few minutes.

Now you know what a car is!

bowsamic 10/25/2024|||
> I've never seen a satisfactory definition of what a particle is as defined by modern field theory.

Quantum physics PhD here. It's because, we don't know. We don't have an ontology for quantum mechanics. We don't know what any of the mathematical model "actually is"

It's the same for basically all modern physics. We lack an ontology for it, so no we can't tell you "what it really is". Literally no one knows

But yes, the mathematical model is: a unit of excitation of the quantum field. What that actually is, is totally unknown

cb321 10/25/2024|||
There are reasonable & reasoned attempts to make sense of all this, such as Sunny Auyang's "How is Quantum Field Theory Possible?" (https://books.google.com/books/about/How_is_Quantum_Field_Th... )

I think such attempts are not widely disseminated / taught to young physicists because older / more experienced ones believe that quantum gravity will re-write the situation anyway. { QG itself seems necessary since in General Relativity you "solve for the metric aka solve for time" self-consistently with mass-energy and that very same "time" is the background for QFT (which is what "makes" mass-energy). So, we don't really understand this model element we call "time" - so elemental to all our ideas of dynamics - without QG. Of course, the most direct quantum gravitational phenomena are, at present, at a subtle experimental scale due to the size of 'G'. This need not remain the case -- once we know what to look for - e.g., https://en.wikipedia.org/wiki/Fraunhofer_lines were beginning to reveal atomic quantum physics in 1802 almost a full century before Planck's black body work and barely after Benjamin Franklin-ian electrostatics and long before Maxwellian electrodynamics. }

I'm mostly just trying to strike a less hopeless note for jiggawatts and provide some reading material which might be accessible (if, as noted, is probably necessarily preliminary - EDIT and some might say this of all "Science" at all times, of course).

elashri 10/25/2024|||
They are not taught because of two things. First it just philosophical opinions and the second is that it does not matter when you are actually working with quantum mechanics/ quantum field theory. So it is usually outside the realm of your standard course/s that have a lot to cover anyway.
bowsamic 10/25/2024||||
Of course there are attempts and opinions but I'm pointing out that there is absolutely no consensus
griffzhowl 10/25/2024|||
Thanks for the reference! Looks like an intriguing book from a glance at the contents pages
dguest 10/26/2024||||
Another take on this: what do you expect the cutting edge of science to look like? Of course it's going to be "these things work, we're not quite sure why", once you know why they work it's no longer the cutting edge.
Galatians4_16 10/25/2024|||
Gödel's incompleteness Theorem, applied to QM, in three paragraphs.
eigenket 10/25/2024||
Neither of Gödel's two incompleteness theorems apply to quantum mechanics.

The two theorems apply to logical systems which prove facts about the natural numbers. While this is an incredibly broad class of things, it doesn't include physical theories like quantum mechanics.

Galatians4_16 10/27/2024||
Guess I Dunning Kruegered, when I thought physics is based on mathematics and logical systems, to which a theory (itself having been proven) aught apply.
bowsamic 10/27/2024||
Physics isn’t based on mathematics and logical systems, it’s based on measurements that the mathematics are chosen to fit
mannykannot 10/25/2024||||
> ...and flat refusing to ever describe them in any other terms.

This is a completely unjustified insinuation against physics and physicists. While there may be a few exceptions in the form of certain individuals, in general, nothing is being held back, and if the answers are not satisfactory, it is because no satisfactory answer has yet been found. I have found physicists usually eager to a fault to talk about physics.

To make sense of it requires some work on your part, of course, but it would be utterly unreasonable to fault physicists for being unable to put everything they collectively know in terms that are immediately clear to everyone whose education on the topic ended at high school.

BurnGpuBurn 10/25/2024|
I always loved the following thought experiment:

Lets' assume the Higgs boson doesn't exist. A large group of scientists has spent 10 billion dollars of public tax payer money to create an experiment that will prove it's existence. It cost them many years to do, decades, and most scientists have staked their entire career on the outcome of the experiment. Turns out, they were wrong, and the particle doesn't exist.

Those scientists now have two options: 1) Being thruthful about the non-discovery, thereby suiciding their own careers (and income!), evoking the wrath of the taxpayer, and basically becoming the laughing stock of the scientific community. 2) Just make some shit up for a while and go on and enjoy your pension which is only a couple of years away.

What would you do?

blahblahblah10 10/25/2024||
You are right about the incentives being aligned a certain way. But, while the justification for the LHC might have been Higgs, what most high-energy physicists (theoretical and experimental) really cared about was validating beyond-the-standard-model (BSM) physics e.g. supersymmetry, hidden valleys etc.

Every search for BSM physics has returned a negative result. You can look at hundreds of arxiv papers by the two collaborations (CMS and ATLAS) that exclude large portions of parameters spaces (masses of hypothesized particles, strengths of interactions etc.) for these BSM models. If anything was found, it would be a breakthrough of enormous magnitude and would also provide justification for the next collider.

So, people have been truthful about the non-discovery of ideas that were extremely dominant in the high-energy community. This did not make them a laughing stock within the scientific community because every serious scientist understands how discovery works and the risk of working at the cutting-edge is that your ideas might be wrong. No one that I know of "made some shit up" in evidence at the LHC.

What do tenured faculty do? They either keep working on the stuff or pivot to other stuff. They are tenured - sure, some lose grant money but I know multiple physicists (very famous too) who have been working on other topics including non-physics problems.

The main criticism is whether we need these extremely expensive experiments in an era of global economic and political uncertainty. The usual argument from the physicists is that (a) we need these to advance the cutting edge of our knowledge (which might have unknown future benefits), and (b) these programs result in many side-benefits like large-scale production of superconducting magnets, thousands of highly trained scientists who contribute to other industries etc.

Whether this is a valid argument needs to be decided by the citizenry eventually. By the way, (via Peter Woit's blog) Michael Peskin recently gave a talk on the next-generation of colliders, the technologies involved and what theory questions have to be answered before making the case for funding - https://bapts.lbl.gov/Peskin.pdf

BurnGpuBurn 10/25/2024||
Thank you for your explanation of what else could've been found with the LHC and that a lot of work was actually done to disprove the existence of a lot of stuff.

Kinda kills my thought experiment though, but I guess that's the point. Thanks.

aardvark179 10/25/2024|||
There were lots of things people really were hoping to see from the LHC, and weren't seen. supersymmetry being one example. Not seeing those things is just as important to everyone involved as seeing them is, so although the theories may try to modify their theories to explain why nothing was seen at those energies, it isn't in any of the experimenters interests to pretend they observed something they didn't.

See also the number of experiments conducted to try and observe things like dark matter candidates with various properties. All those experiments are in competition to either show presence or absence, and absence is just as important because it's proving that you made an incredibly sensitive detector and have used that to show that a particular possibility really wasn't the right one.

bdndndndbve 10/25/2024|||
By this rationale the moon landing also never happened, because everyone from NASA was incentivized to lie about it. Why bother even going when you could fake it?
BurnGpuBurn 10/25/2024||
I just said I loved the thought experiment. There's multiple ways to see the flaws in it. Like: how would that large group of scientists (be it at NASA or CERN) keep such a fraud a secret for such a long time? In NASA's case there'd be a lot of people coming clean on their death beds, which hasn't happened of course.
bdndndndbve 10/25/2024||
"thought experiments" like this are worse than useless, it's a way for people on the internet to discuss any hypothetical topic without actually knowing anything. You take some contrarian view and say "yes if I constructed the whole world to back into my preconceived view it could be true". It's unfalsifiable. TFA has actual facts.
fastasucan 10/25/2024|||
>1) Being thruthful about the non-discovery, thereby suiciding their own careers

By writing this it seems like you are under the impression that no science happened until they discovered or "non-discovered" the particle. But that is of course wrong.

flatline 10/25/2024|||
It would be no harm to the bureaucracy if they did not find the Higgs. The scientific community would have reacted with excitement and the search for the hole in the standard model would have been apace. In many ways this would have been better for particle physics funding. The standard model is now complete, and we still don’t have a unified field theory. I’m not a physicist but have been following this search through popular writing since I was a kid. Is there now any reason to build a bigger supercollider, and/or is there a risk of the entire field stagnating till someone comes along with a testable theory?
nick3443 10/25/2024||
Any favorite resources for a fellow science-interested laymen interested in getting to your understanding level?
flatline 10/25/2024||
Off the top of my head, Hawking’s books talk a lot about the GUT and are still relevant, Greene’s book on string theory is an advancement of conceptual attempts to find one. It’s harder to point to now because so much of the public discourse since the mid-2000s has moved online.
PaulHoule 10/25/2024|||
Actually “No Higgs” would have been as big a scientific discovery as a Higgs, maybe bigger.
BurnGpuBurn 10/25/2024||
Yes? Wouldn't that mean that "the party" is over, just write a single paper and you can shut down and dismantle the machine you've just finished building?
Filligree 10/25/2024|||
Not hardly. If there was no Higgs, then some other mechanism would be needed to cause the same effects the Higgs does. We’d need the LHC even more then.
ejolto 10/25/2024||||
No it would mean the standard model is wrong and there would be more to discover.
rcxdude 10/25/2024||||
No, you keep running the machine, hoping to find a useful signal. More data means more fidelity. A lot of that has been probing the properties of the Higgs, but it's also spent a lot of time ruling out quite a lot of proposed extensions to the standard model.
seanhunter 10/25/2024||||
Not even close. The party would seriously be on because then you'd need some alternative that explained the new hole in the standard model.
empath75 10/25/2024||||
The LHC wasn't built to discover the higgs. Another primary motivation was looking for supersymmetry and dark matter candidates. But really it was more general than that. Every time we've built a bigger collider we've found something new, and on some level, they just wanted to see what would happen. New data means new things to explain.
fastasucan 10/25/2024||||
>Wouldn't that mean that "the party" is over, just write a single paper and you can shut down and dismantle the machine you've just finished building?

No, not at all.

12_throw_away 10/25/2024||||
No. This has been answered multiple times up and down the thread.
kjrfghslkdjfl 10/25/2024|||
[dead]
lokimedes 10/25/2024|||
From the perspective of the (real) physicists involved the outcome is the same. Most of my colleagues who have stayed in particle physics post Higgs are wishing it was never discovered. The motivation of scientists is not well-understood by others, but assuming people make a career in particle physics for the income or job stability is ridiculous. The alternative cost is so high it has to be that they actually really like what they do.
sanderjd 10/25/2024||
Yep, every single physicist I know would be twice as good at my job as I am and would have twice the earning potential if they switched with me. They don't do it because it sounds incredibly boring to them. "You mean someone might ask me to tweak the size of a button on a website? No thank you!"
elashri 10/25/2024||
Ironically, some physicists (specially maintaining webpage for their project on CERN) might actually have to tweak the button sometimes. But usually they rarely do it and usually without being asked /s.
empath75 10/25/2024|||
We know what they did because a _lot_ of scientists desperately wanted to find supersymmetry and various dark matter candidates with the LHC and they've found absolutely _nothing_ and didn't actually just "make some shit up".

Instead what they are doing is insisting that we build an even bigger particle accelerator.

SideQuark 10/25/2024|||
> What would you do?

The scientist calling bullshit that can back it up gets in history books. The others eventually lost credibility.

So I (and pretty much all scientists I'e ever worked with) would call it a failure.

By your implication, nuclear fusion researchers would have "found" it decades ago. But since reality wins in the end, and scientists are generally not pathological liars, they did not. They continue to advance the field.

There's ample other cases demonstrating the flaws in your story. Bad scientists don't tend to last long under the gaze of reality.

burkaman 10/25/2024|||
Your options are reversed. Under the mass conspiracy scenario, any individual scientist could become famous and promote their own career by whistleblowing about the fraud. But if the scientists are truthful as a group, they can guarantee further research and grants because the standard model is wrong and more experiments will be needed.
BurnGpuBurn 10/25/2024||
Oh I like this argument a lot, thanks.
ttpphd 10/25/2024|||
This but it's HIV and circumcision.

"A new Tuskegee? Unethical human experimentation and Western neocolonialism in the mass circumcision of African men"

https://onlinelibrary.wiley.com/doi/full/10.1111/dewb.12285?...

mrguyorama 10/25/2024|||
You don't seem to understand what "thought experiment" is. It is not when you pull some contrived nonsense out of your ass and make conclusions from it.

You also don't really seem to understand how scientists view science. When something that nobody expects DOES happen, and similarly, when scientists expect very very much to see something and clearly do not, both of those outcomes are exciting for scientists.

Predicting something from a model or theory and then having it be confirmed very successfully sure is great for that theory or model, but is the most BORING outcome for the scientists working on it.

Confirming someone else's fairly successful and well developed model is rarely how you gain money or fame in science.

g4zj 10/25/2024|||
> Being thruthful [sic] about the non-discovery

> Just make some shit up

Is that how it works in the scientific community? I'm not actively involved, but I feel like publishing my findings, one way or another, would require explaining how I arrived at them in a manner that would be reproducible (and thus, verifiable to an extent) by others. What am I missing?

Not asking rhetorically, by the way. I'm just genuinely curious.

rcxdude 10/25/2024||
The challenge with the results from the LHC is that there's no second one, so no completely independent reproduction. That said, there were two experiments which were seperate apart from using the LHC for the collisions, and both of them have published their full raw data and methods of analysis, so a fabrication would require falsifying quite a large quantity of raw data in a way that hasn't been detected yet, and co-ordination between quite a lot of people.
tpoacher 10/25/2024|||
Imagine the earth isn't round!
kjrfghslkdjfl 10/25/2024||
I'm quite confident in guessing that you've never had any first hand contact with experimental physics research.

If you did, you'd know that most people aren't there for "the income", but because they enjoy advancing physics.

Yes, sure, if there's a non-discovery, physicists will move on to the next best thing which is "... can we still learn something new about how the universe works?" They won't "just make some shit up".

Counter-point: non-discoveries do happen all the time, and we can look how they turned out. Nuclear fusion has been failing for decades, and scientists "making shit up" is extremely rare. In 40 years one team tried making shit up (cold fusion) and got wrecked by the scientific community.

BurnGpuBurn 10/25/2024||
You're quite wrong in your guess but that's ok. I work in a research lab actually, and there's lots of experimental physics going on here.

I never claimed people are choosing a career in physics research for the money, I just used the argument of having to choose to lose ones income. Also, I can't help but notice though that, when ascended high enough on the academic ladder, the income isn't a joke either.

SirHumphrey 10/25/2024|||
Do you know what severely hurts your income as a scientist? Lying about the data and then other people finding out. With the amount of data both of LHC detectors were publishing covering up the lie would be impossible- it’s exceedingly difficult to fabricate data convincingly (see Jan Hendrik Schön).

I would be much more worried about errors in methodology than falsifications.

sanderjd 10/25/2024|||
The income is a total joke compared to what those people would be able to make on any private sector job ladder. Anyone who can be a tenured research physicist could easily make seven figures (likely more) in finance.
poincaredisk 10/25/2024||
>easily make seven figures (likely more)

I agree that income is a joke but... more than seven figures as in eight? That's quite a lot.

sanderjd 10/25/2024||
Yeah I guess this might be hyperbolic. But my sense is that quite a few quants make seven figures, and that people capable of being tenured research physicists could be at least in the top of that group, if not partners / executives at those firms, which I believe is often an eight figure job. If they could stomach the work, that is...