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Scientists are worried about the W Boson: 'Something is amiss'

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51–60 of 62 posts

Re: Scientists are worried about the W Boson: 'Something is amiss'

#51

we'd have to change our understanding of how all the particles in the universe work. Well, remember the new paper? We're pretty much entering that worst case scenario. I believe you mean "best case"! There was much hue and cry after the Higgs discovery because the result, at least from the outside, seemed like "welp, we predicted a thing and found it and we don't have any new physics to disagree with; what a letdown!…

Definition of Science: 1 a : a study where participants seek to disprove their own conjectures b: the practice of getting excited when proven wrong because it means more work 2 : a complex study where everything that can go wrong will go wrong, often small or trivial errors (frequently difficult to observe) leading to insanity within participants as they have an existential crisis coming to terms with a new world par…

3 : being open-minded of what is possible.

Re: Scientists are worried about the W Boson: 'Something is amiss'

#52
post #17

Earlier quoted context omitted.

Very good? It feels patronising to me... "[I]t involves physics that'll explode our minds. Trust me."? "To get a W boson in the first place, you literally have to smash two protons together."? Feels like it's aimed at 5th graders...

If anything deserves to be patronizing, it is probably high-energy physics. The reader should not expect to truly understand anything, or be able to deduce anything, after reading the pop-sci explanations of particle physics experiments. Analogies have the problem that you never know where they stop, and so you can't safely reason any further from what you've been told. It is bad if you walk away thinking you know mo…

Well argued. Once I was very into this and took pride in being able to read through Planck, Einstein and derive wave mechanics from first principles. At 50, when it comes to modern theoretical physics I do feel like a 5th grader again. I am still interested. While in other subject areas I remain at multiple PhD level we can't stay match-fit at every intellectual game forever. So I don't see this as necessarily being written for 5th graders, though I am grateful for good science writing to keep up interest for people like myself who are super interested but need the 5th grader down-talking to stand in for pages of equations that are now well beyond me to follow.

Re: Scientists are worried about the W Boson: 'Something is amiss'

#53

Earlier quoted context omitted.

> the instrument deformed slowly under its own weight for the last decade and now we're 4 angstroms off This was hilarious and plausible at the same time. Nice work!

It's like the six-sigma result of CERN OPERA experiment showing neutrinos travaling slightly faster than speed of light - which was ultimately caused by a fiber cable between clocks not being fully tightened and thus causing a tiny delay and messing up the measurements. https://en.wikipedia.org/wiki/Faster-than-light_neutrino_ano...

Experiments can detect all sorts of things, including new unanticipated subtle experimental artifacts.

Re: Scientists are worried about the W Boson: 'Something is amiss'

#54
post #13
post #9

The fun thing about measurement physics is that you never know if your cool tool is measuring something in the universe, or if you are using something in the Universe to test and find bugs in your tool.

That's why you build another instrument that is demonstrably a factor of two more sensitive -- it either detects the new thing with much higher precision or credibly disproves the old measurement and makes forward progress at the same time. If you can't do that, then you build another instrument that uses a different technique but reaches similar sensitivity. If the two instruments disagree, this will tend to lead to…

"That's why you build another instrument that is demonstrably a factor of two more sensitive"

This is not possible

Re: Scientists are worried about the W Boson: 'Something is amiss'

#55
post #47
post #31

Earlier quoted context omitted.

I was wondering the same thing. Dark matter has never been observed. Its existence is based entirely on equations.

It has been observed, by its effect on other things, and in particular because this effect isn’t always the same. Most galaxies’ stars orbit at the wrong speed, but some behave as expected. Most galaxies gravitationally lens the background more than expected, but in some cases (colliding groups) something that doesn’t shine or reflect any EM radiation is causing lensing next to the galaxy while the galaxy itself is c…

If you wanted to get particularly philosophical, everything is observed by its effect on other things.

Re: Scientists are worried about the W Boson: 'Something is amiss'

#56
post #47

Earlier quoted context omitted.

It has been observed, by its effect on other things, and in particular because this effect isn’t always the same. Most galaxies’ stars orbit at the wrong speed, but some behave as expected. Most galaxies gravitationally lens the background more than expected, but in some cases (colliding groups) something that doesn’t shine or reflect any EM radiation is causing lensing next to the galaxy while the galaxy itself is c…

If you wanted to get particularly philosophical, everything is observed by its effect on other things.

Sure, but my point was that dark matter is not just an artefact of equations.

Re: Scientists are worried about the W Boson: 'Something is amiss'

#57

we'd have to change our understanding of how all the particles in the universe work. Well, remember the new paper? We're pretty much entering that worst case scenario. I believe you mean "best case"! There was much hue and cry after the Higgs discovery because the result, at least from the outside, seemed like "welp, we predicted a thing and found it and we don't have any new physics to disagree with; what a letdown!…

Definition of Science: 1 a : a study where participants seek to disprove their own conjectures b: the practice of getting excited when proven wrong because it means more work 2 : a complex study where everything that can go wrong will go wrong, often small or trivial errors (frequently difficult to observe) leading to insanity within participants as they have an existential crisis coming to terms with a new world par…

The process of getting the world as it can be experienced and its cultural representation to converge by updating the latter.

Power is the same, but acting on the former.

Stay away from mirrors or that definition collapses on itself.

Re: Scientists are worried about the W Boson: 'Something is amiss'

#59
post #13

Earlier quoted context omitted.

That's why you build another instrument that is demonstrably a factor of two more sensitive -- it either detects the new thing with much higher precision or credibly disproves the old measurement and makes forward progress at the same time. If you can't do that, then you build another instrument that uses a different technique but reaches similar sensitivity. If the two instruments disagree, this will tend to lead to…

"That's why you build another instrument that is demonstrably a factor of two more sensitive" This is not possible

It definitely is. In this specific case, LHC will almost certainly yield improved mass measurements. Just as Fermilab published this result a decade after the Tevatron shut down, increasingly refined measurements like this will continue to emerge from LHC through ~2050 or so.

Re: Scientists are worried about the W Boson: 'Something is amiss'

#60

Earlier quoted context omitted.

> One of the recent (past decade or so) major mistaken discoveries in particle physics was a cabling issue. Have more info on this or link about it?

I'm guessing the parent is referring to https://en.wikipedia.org/wiki/Faster-than-light_neutrino_ano...

Thanks
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