SoylentNews is people
SoylentNews
Submitted via IRC for takyon
A new study suggests that many theorized heavy particles, if they exist at all, do not have the properties needed to explain the predominance of matter over antimatter in the universe.
If confirmed, the findings would force significant revisions to several prominent theories posed as alternatives to the Standard Model of particle physics, which was developed in the early 1970s. Researchers from Yale, Harvard, and Northwestern University conducted the study, which was published Oct. 17 in the journal Nature.
The discovery is a window into the mind-bending nature of particles, energy, and forces at infinitesimal scales, specifically in the quantum realm, where even a perfect vacuum is not truly empty. Whether that emptiness is located between stars or between molecules, numerous experiments have shown that any vacuum is filled with every type of subatomic particle — and their antimatter counterparts — constantly popping in and out of existence.
Source: https://news.yale.edu/2018/10/17/new-study-sets-size-limit-undiscovered-subatomic-particles
(Score: -1, Offtopic) by Anonymous Coward on Sunday October 28 2018, @06:29AM (1 child)
Awwwwwwwwwwwwwwww! Baby's first time being waped! Boohoo!
(Score: 1, Funny) by Anonymous Coward on Sunday October 28 2018, @07:28AM
You jackass. I was gonna post something trollish that might have passed for funny. You post your idiocy, and ruin it. I hope you choke to death on baby shit.
(Score: -1, Offtopic) by Anonymous Coward on Sunday October 28 2018, @09:08AM (1 child)
Antimatter;
Upper bound: yo mamma
Lower bound: yo dick
Actually, since no one is attracted to either, it could explain things.
(Score: 0) by Anonymous Coward on Sunday October 28 2018, @10:59AM
I think we should make "a dick" a standard based on the average size. This would make the olympics much more fun.
(Score: 2) by mcgrew on Sunday October 28 2018, @01:44PM (3 children)
Could antimatter be anti-gravitic? I mean, could antimatter repel matter? That would explain why there seems to be so little of it.
Carbon, The only element in the known universe to ever gain sentience
(Score: 2, Informative) by Anonymous Coward on Sunday October 28 2018, @02:39PM
anti-matter has positive inertial mass (we know because it's been created in the lab).
even anti-hydrogen has been created.
there's no reason to assume there's a factor of -1 in the equivalence principle for anti-matter, although it must be specified that we did not, in fact ever measure gravitational forces between a clump of anti-matter an anything else (equivalence prinicple says inertial mass is equal to gravitational mass).
however, since it has positive rest energy, current predictions are that it will be affected by gravity just like regular matter.
additional comment: photons are routinely viewed as their own anti-particle, and they are known to be affected by gravity as expected under general relativity.
(Score: 3, Informative) by RandomFactor on Sunday October 28 2018, @05:08PM
Consensus has always been that anti-matter was the same as matter from gravity's perspective.
.
Last I heard they hadn't conclusively proved it either and speculation remains. They were playing with laser cooled anti-hydrogen molecules experimentally to check on that exact question. Not sure if that's come to any conclusion yet, but if it turned that out gravity worked backwards for anti-matter you can bet we would have heard about THAT :-)
В «Правде» нет известий, в «Известиях» нет правды
(Score: 0) by Anonymous Coward on Monday October 29 2018, @02:16PM
Not likely. If antimatter was anti-gravitic, it would also be anti-inertial, if you believe in Einstein's Equivalence Principle, and then the conservation of momentum would not hold (or would make for a weird behavior), and that would be apparent in experiments with positrons and antiprotons.
(Score: 2) by RandomFactor on Sunday October 28 2018, @05:20PM
...we're gonna need a bigger collider.
В «Правде» нет известий, в «Известиях» нет правды
(Score: 0) by Anonymous Coward on Sunday October 28 2018, @06:04PM
Researchers used cute acronym instead of actual acronym :
Advanced Cold Molecule Electron Dipole Moment (ACME)
10 yard penalty