US atom smasher may have found new force of nature (Update 4)
A monitor showing ultra high-energy collisions of protons. US physicists are to announce that data from a major atom smasher lab may have revealed a new elementary particle, or potentially a new force of nature
Data from a major US atom smasher lab may have revealed a new elementary particle, or potentially a new force of nature that could expand our knowledge of the properties of matter, physicists say.
The science world was abuzz with excitement Wednesday over the findings, which could offer clues to the persistent riddle of mass and how objects obtain it -- one of the most sought-after answers in all of physics.
But experts cautioned that more analysis was needed over the next several months to uncover the true nature of the observation, which comes as part of an ongoing experiment with proton and antiproton collisions to understand the workings of the universe.
"There could be some new force beyond the force that we know," said Giovanni Punzi, a physicist with the international research team that is analyzing the data from the US Department of Energy's Fermi National Accelerator Laboratory.
"If it is confirmed, it could point to a whole new world of interactions," he told AFP.
While much remains a mystery, researchers agree that this is not the "God Particle," or the Higgs-boson, a hypothetical elementary particle that has long eluded physicists who believe it could explain why objects have mass.
"The Higgs-boson is a piece that goes into the puzzle that we already have," said Punzi. "Whereas this is something that goes a little bit beyond that -- a new interaction, a new force."
Punzi said the new observation behaves differently than the Higgs-boson, which would be decaying into heavy quarks, or particles.
The new discovery "is decaying in normal quarks," Punzi said. "It has different features," he added.
"One thing we know for sure -- it is not the Higgs-boson. That is the only thing we know for sure."
For more than a year physicists have been studying what appears to be a "bump" in the data from the Illinois-based Fermi lab, which operates the powerful particle accelerator, or atom-smasher, Tevatron.
The Tevatron was once the most powerful machine in the world for such purposes until 2008 when the Large Hadron Collider (LHC) became operational at the European Organization for Nuclear Research, which goes by the acronym CERN.
The US machine began its work in the mid 1980s, and is scheduled for shutdown later this year when its funding runs dry.
"These results are certainly tantalizing," said Nigel Lockyer, director of Canada's national laboratory for particle and nuclear physics, TRIUMF.
"It is too early to say for sure what the Fermilab team has observed," he added in an email.
"On the one hand, there is clear evidence for something unexplained, and on the other, there is a long list of alternative explanations for what might be causing this subtle observation.
"My personal judgment is that this excitement is adding fuel to the fire for the next generation of results and discoveries that will be made at the LHC (in Europe) and elsewhere. We are so close to learning something profound."
Lockyer, a former spokesman for the Collider Detector at Fermilab (CDF), which made the announcement, said there is another major experiment going on at Tevatron, a sister project known as D-Zero (D0), which could help confirm the data.
"They are both multipurpose detectors. They both have the capability of seeing this," he said, predicting a rush of opinions by theoretical physicists in the coming days, and more data that could shed more light on the finding by summer.
"It will become very much clearer in the next few months. You won't have to wait years."
According to D0 physicist Gregorio Bernardi, the presentation of the findings created a stir.
"This is not yet what we call a discovery, since this is possibly a statistical fluctuation, but it is already quite significant, and could be evidence for physics beyond the standard model," he said.
"While experimentalists are careful when a signal is extracted above a large background as it is the case here, the theorists were all quite excited and several papers are being submitted today or tomorrow."
D0 will release a similar study in the coming weeks.
"In the previous D0 publication on such events, with four times less statistics, no such peak was visible," Bernardi said.
More information: View an online video presentation here.
(c) 2011 AFP
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Apr 06, 2011
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Apr 06, 2011
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Phion...
Apr 06, 2011
Rank: 4.8 / 5 (26)
Peer review. Probably by the guys at CERN and others in the field. At that level of expertise the field is so small that most people working on it know each other.
Remember that science is not a competition among scientists as to "who does what first". It's only the bureaucrats that care for such childshness.
Apr 06, 2011
Rank: 4.2 / 5 (26)
Apr 06, 2011
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WOW! This is exciting. If it is a major discovery maybe the people will think twice about shutting down the Tevatron.
Apr 06, 2011
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Apr 06, 2011
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Apr 06, 2011
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Apr 06, 2011
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"Uh...yeah...we found something awesome, it's an anti-graviton...yeah...that's it...we need more funding!"
Apr 06, 2011
Rank: 3.5 / 5 (17)
Nonsense! The scientists care too. Maybe not for the money, but putting your name after Nobel Laureate is the dream of just about everyone in science.
Apr 06, 2011
Rank: 1.2 / 5 (57)
Pushing force is only real force!
There is no expanding space.
There is no curving space.
There is no extra dimensions.
There is no drawing force at all.
Quarks and particle like photons expanding in space who is nothing!
Lets google: youtube eternal horne of plentys and you know more!
Thanks
.
Apr 06, 2011
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Apr 06, 2011
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Apr 06, 2011
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Apr 06, 2011
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I'm with those holding their breath...
Apr 06, 2011
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So what if my joke is true?
What if they DID discover an anti-graviton?
Or a particle came through a nano-wormhole or something?
What if it's Dark Energy?
Or Dark Matter?
Or Quintescence(sp)?
I'd prefer anti-gravity, but hey, that's just me.
Travelling to another star in human time scales would be cool...
Apr 06, 2011
Rank: 4.2 / 5 (39)
Apr 06, 2011
Rank: 4.4 / 5 (12)
No. we don't care about that. How much is a prize worth if it's given by people whom you KNOW have no idea what they're giving the rize for?
When you do science you NEVER do it for prizes or money (you could make a lot more money working for some tech company instead of working on research)
In any case the Tevatron thing is a group effort. Fat chance anyone but the head-bureaucrat would get the Nobel Prize.
Apr 06, 2011
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Apr 06, 2011
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Apr 06, 2011
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Apr 06, 2011
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Is there any way to turn this force into a bomb to drop on the Ayatollahs? We should get on that.
Also, let me say preemptively that there's no way this force is stronger than THE Ohio State Buckeyes football team will be in 2011. Look for Braxton Miller to have a breakout performance and keep the Bucks in the hunt until Coach Tress gets back from that suspension.
QED.
Apr 06, 2011
Rank: 3.4 / 5 (5)
hey i tried to vote you up -- it was a good joke -- but your reputation receeds you...
Apr 06, 2011
Rank: 5 / 5 (8)
The nice thing about proton-antiproton collisions (or electron-positron collisions) is that you start with a lot of energy, and all the other various numbers at zero. The title implies a new higher mass particle which is an analog to the W boson (the W+ is the antiparticle of the W-). It could be mediating another force like the weak force that hasn't been discovered, or it could be "just" a complication of the weak force with a particle that decays say into a muon and mu-antineutrino instead of an electron and antineutrino.
It could also be a WIMP (weakly interacting massive particle) which could make it a candidate for dark matter.
Apr 06, 2011
Rank: 4.6 / 5 (32)
It has been 31 years now since the Tevatron was put online and it is responsible for discoveries such as the top quark. Just imagine the potential of the LHC. That been said, I myself don't care where the next smasher gets built -- as long as it does. Great stuff.
Apr 06, 2011
Rank: 5 / 5 (2)
I hope that's not the case... but thanks for the chuckle!
Apr 06, 2011
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Keep dreaming.
Apr 06, 2011
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Apr 06, 2011
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live stream is almost useless.
Apr 06, 2011
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http://arxiv.org/...99v1.pdf
Apr 06, 2011
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Apr 06, 2011
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Just a note before I go off to look at the slides and backup online. There is a lot of talk about discovering the Higgs, or for that matter the WIMPs expected to be dark matter. But you can't just look at the data when you have enough, and find the particle. You have to hypothesize properties for the particle (mass, spin, strangeness, charm, charge, etc.) filter the data for events which can create "your" version of the particle, and filter further for the signature of the particle decaying. Now out of billions or trillions of events, you pick the few thousand which might be what you are looking for.
This presentation is very unusual since it is about finding a resonance they were not looking for.
Apr 06, 2011
Rank: 3.4 / 5 (5)
If so wouldn't it be stable and not decay? Seems like if they found DM you would have missing energy because the WIMP would flee like neutrinos, right?
What they think they are seeing is unexpected normal quarks resulting from decay of something unstable like the gauge bosons. QC, I am sure the modified gravity guys are holding their breath for the anti-graviton (Moffat's phion).
Apr 06, 2011
Rank: 1.6 / 5 (12)
Well, one can only hope that we can figure out how to find a particle that we can actually manipulate and do something useful with that particle.
I think the last two times that happened where photon and electron...
Finding something with a real world practical value, such as the graviton or anti-graviton, or a tachyon or something would be just amazing.
Apr 06, 2011
Rank: 5 / 5 (7)
How could this be a WIMP? In most cases the WIMP would exit from the detector--and those events were not eligible for this data set. In some cases, you would get a WIMP which would interact weakly with some particle in the detector, and the two jets would represent the debris from that decay. You don't need much of a WIMP + say electron (weak) interaction to produce the number of events seen here.
I don't know where science writers get the idea that WIMPs interact with matter only through gravity. The name should make it clear that weak force interactions are required.
Back to the presentation (given by Viviana Cavaliere). This is not the Higgs that everyone has been looking for. But it could be a different Higgs, and that would explain why the Higgs hasn't been found yet. ;-)
Apr 06, 2011
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Apr 06, 2011
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I have to admit, I quite literally LOL'd when I read this.
Apr 06, 2011
Rank: 4 / 5 (1)
So the knives sticking in each others backs have the names of the stickees on them from the stickers?
Kidding! Nothing like friendly personal competition to liven things up.
Apr 06, 2011
Rank: 4.3 / 5 (3)
Mother Nature waves hands, "This is not the particle you're looking for."
Scientists in tandem, "this.. is.. not.. the.. particle.. we.. are.. looking.. for."
Apr 06, 2011
Rank: 1 / 5 (1)
@eachus - You were the one I quoted that suggested it be a WIMP 3 comments ago. I guess your most recent response means you agree with my point. Strange...
It actually looks like everybody in the field has their name on this paper. The delay was probably for spell checking on last names.
Apr 06, 2011
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Sure sounds like it. They discover a mystery particle just as funding is about to run dry? We could use these guys in Congress.
Apr 06, 2011
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Apr 06, 2011
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Apr 07, 2011
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Actually, that's not quite the case. There is intense rivalry between Fermi and Cern. The Fermi guys desperately wanted to find the Higgs but could not, even with extensions, before the facility closes. They're desperately trying to find an exotic signal in the experimental noise and therefore one up Cern, but so far it's all been very tenuous and this report changes little.
But, in fact, this sort of rivalry between labs is a very good thing for science in general.
Apr 07, 2011
Rank: 5 / 5 (10)
Oh, yes, I agree... please can we stop using the description "God particle", goodness me, a religious mind doesn't need any helping hand with irrationality... it isn't cute, it's ridiculous.
Apr 07, 2011
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Apr 07, 2011
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How could this be a WIMP? In most cases the WIMP would exit from the detector--and those events were not eligible for this data set.
@eachus - You were the one I quoted that suggested it be a WIMP 3 comments ago. I guess your most recent response means you agree with my point. Strange...
I guess you missed one of my earlier posts. There are billions of events, but the detectors are selective and only "trigger" on a few of them. Selection criteria in the data reduction eliminate most of those. So if one out of ten million WIMPs produced interacted with a particle in the detector, this is the sort of signature you would see.
As for WIMPs being stable, so are protons, unless some theories about proton decay are true--but they last for at least 10^33 seconds. But every event in the detector begins by smashing a proton to bits. At the energies that the particles produced in the detector have, nothing is really stable.
Apr 07, 2011
Rank: 3.3 / 5 (6)
Really? What other 'paradigm' is there?
And how would you make this realization without testing and observation?
Oh no, not another philosophical free will discussion :o
Apr 07, 2011
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Apr 07, 2011
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C'mon, even statistical anomolies have statistical anomolies.
Apr 07, 2011
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a) We're dealing with multi-billion dollars worth of equipment. No one is going to rush anything. Experiments are done when they are good and ready (and pre-planned by a year or more). It's not exactly a secret who will do what and when in particle physics. Groups don't shift their schedules around top beat other groups.
b) Until 6 months ago I lived that life as a scientist (not a particle physicsist). And I have NEVER seen that kind of competitive attitude between scientific groups which would mean "we have to find X before group Y does".
I was well aware of all the groups that did research comparable to mine. And you know what? When they found stuff that matched with what I found (either sooner or later than them) I was extremely pleased. How else can you check whether you've made a (systemic) error?
Apr 07, 2011
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Apr 07, 2011
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Apr 07, 2011
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Apr 07, 2011
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nailed it on the 1st try
Apr 07, 2011
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Apr 07, 2011
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"UPDATE 1: BLAH BLAH BLAH
"UPDATE 2: Blah bleep blah
I vote for the particle to be called the "its not heavy baby, its my brother" particle
Apr 07, 2011
Rank: 5 / 5 (1)
Within 1 minute tops you'll receive a lethal dose of ionizing radiation and you will die.
Apr 07, 2011
Rank: 2.3 / 5 (6)
It occurs to me that it is no mystery that there is mass, rather the absence of it where there isn't any. Reality is the result of differentiation. Before there was anything, there was nothing, and nothing can be represented as infinite density, and infinite density can be represented as infinite potential. Then space, time, and matter are created. Insomuch as time as the perception of continuity, mass only exists relative to the absence of it in unnoccupied space. So in essence, mass is not actually conferred on a particle, it exists as a matter of course.
A point to ponder.
Apr 07, 2011
Rank: 3.7 / 5 (3)
Hm.. What about the "publish-or-perish" practice? Falling off the tenure track? What about commerially sponsored research? Like to see your insights..
Apr 07, 2011
Rank: 1.5 / 5 (4)
Infinite potential was before the start of what we call time in our Universe. Time brought entropy and the potential degraded into space and matter. Nothing and infinite density never existed..
Apr 07, 2011
Rank: 5 / 5 (2)
The argument of "it's not the size, it's how you use it" comes to mind, haha :P
Apr 07, 2011
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Apr 07, 2011
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Apr 07, 2011
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Publish or perish is very real. But that doesn't mean you have to publish ahead of other guys. Experiments at different facilities are never identical. The data you publish is always different enough not to coun as a "me too" publication.
I don't know about the tenure track (since I am not a professor). But I know that the profs have always several things going on at once. And anyways it's not the professors that do the actual research (neither, mostly, the guys with the PhDs) but the PhD students. The profs/PhDs mostly just say which area you should investigate.
Commercially sponsored research (like mine was) is always something specific for a company or related to their products - so the chances that someone else does exactly that elsewhere is practically zero.
Apr 07, 2011
Rank: 5 / 5 (4)
You are welcome to work as a scientist yourself and get first hand experience.
Reemember that scientists have invested a lot of time and energy into something that is dear to their hearts. They aren't stupid. They know that with much less effort they could have gotten a lot more money/recognition.
So dismiss the notion that scientists are in it for the money or the fame. Honestly. We don't care about that beyond being able to live off it and getting the occasional paper out (and many wouldn't even care about the latter part if it weren't more or less mandatory).
Apr 07, 2011
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Apr 07, 2011
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How can you call something like that 'pushed a little too far'?
Apr 07, 2011
Rank: 1 / 5 (2)
Additionally this pressure had caused corners to be cut in design and oversight but I can't find confirmation of this.
"The connections between the LHC's magnets aren't robust enough, Strait says. "The design looks like one that is optimized to make installation easy," he says. "These stupid little corners [of the design] get short shrift because they are boring." Only constant project reviews and more-integrated management can catch such problems, he says."
"...restart of the experiment in late summer 2009, with the beam energy and intensity limited to minimise the risk of another accident."
Apr 08, 2011
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Apr 08, 2011
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Inadequacy of Perception to Cosmology Vedas Interlinks.
Now I am happy to see confirmation through
"One thing we know for sure -- it is not the Higgs-boson. That is the only thing we know for sure."
Now start Seach- Where lies the right Spirit
www.newciv.org/nl...hp/_v162
Vidyardhi Nanduri
Apr 09, 2011
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I guess you're not a scientist. If I had a dollar for every time some ego-crazy scientist obsessed about being the first to publish a new result (myself included, by the way), I'd be able to afford health care!
Apr 09, 2011
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You guess wrong.
Apr 09, 2011
Rank: 2.3 / 5 (3)
You have hit the nail on the head. Scientists are completely self-centred: Especially those who deny that they are. The latter ones are usually the ones who steal ideas since according to them it dioes not matter who gets the credit: So why not grab the credit even if you have not earned it!
Apr 09, 2011
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Apr 09, 2011
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Apr 09, 2011
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Apr 09, 2011
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Add the positron to that short list: Positron Emission Tomography has been used in medicine since the 1950's ...
Apr 09, 2011
Rank: 4 / 5 (1)
You would think if we had anti-grav tech that facilitated near light speed travel the prospect of bringing sufficient shielding would be feasible.
Apr 09, 2011
Rank: 5 / 5 (5)
Unfortunately you're wrong on this one. I thought the positron was isolated in a collider and it wasn't. It was discovered first mathematically, then detected within a vaccuum chamber. No collider involved.
Apr 09, 2011
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Apr 09, 2011
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Apr 10, 2011
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Apr 10, 2011
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Apr 10, 2011
Rank: 5 / 5 (5)
An anti-graviton would probably be something along the lines of an inflaton. If we can verify inflatons, we would be verifying a massive amount of physics that is not only in question, but under heavy assault by heretical physicists, however, if we determine that this is a novel particle, we can wrap up and kill the current standard model of particles and explore some new science.
Apr 11, 2011
Rank: 3.7 / 5 (3)
Although few would understand why.
Apr 11, 2011
Rank: 1 / 5 (1)
http://www.youtub...X6HsUBkY
http://www.youtub...M5gQeInw
Apr 11, 2011
Rank: 1.8 / 5 (5)
Anyway, can a graviton have an antiparticle? Wouldn't an anti-graviton simply be another graviton?
Apr 11, 2011
Rank: 4.5 / 5 (2)
No idea, but the current standard model would require some form of anti-particle, even if that anti-particle was the graviton itself.
Apr 11, 2011
Rank: 3 / 5 (2)
If I am reading the thread right, anti-graviton is probably a poor term. I think the concept would be a new particle that carries a repulsive force that counteracts gravity.
Moffat calls his a phion.
Apr 11, 2011
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Apr 11, 2011
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Since we're on to wild imaginings regarding this article, has anyone thought about tachyons? Wouldn't that be cool?
Apr 12, 2011
Rank: 3 / 5 (6)
Go on arxiv and look up Viktor T Toth. He is one of the pair that came out with last year's comprehensive study on the Pioneer anomaly. A couple of articles suggest that he and Turyshev are leaning towards heat radiation, but per their report, further study is being done and the jury is still out. As recently as last month papers were coming out with CDM explanations as well as gravity modifications. btw, Toth is also still working with Moffat on MOG (not that that really means anything).
Maybe Moffat's MOG is wild imaginings but at least it tries to stay within the bounds of relativity. And unlike MOND, MOG seems to fit cosmological data without any DM (needs DE though).
In any event, I'm rooting for the new particle to be the "anti-graviton".
Apr 12, 2011
Rank: 2.3 / 5 (6)
It looks like consensus is being reached.
Here's the latest:
http://www.cosmos...y-solved
It's interesting, but I'm not ready to throw in the towel on GR. We need to better assert the argument for (or against) DM and DE, first.
LOL. Sure. Why not?
Apr 12, 2011
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Apr 12, 2011
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I have an idea about that. Digital universe. Compare it to a flight of stairs. Time would be the x axis, communication between particles the y axis. In between segments of planck time is a space of null time in which all particles communicate with one another. Effectively it would solve the schroedinger's cat paradox, which is kind of a silly construct to begin with. Schroedinger implies that a particle can exist in isolation. I don't think that's possible. So I would propose that every subcomponent of the universe is in complete contact with every other subcomponent in the spaces between moments of planck time. The math shows that when you subdivide time beyond the smallest possible bits you have 'no time', but as you have no time you would also have 'infinite time', similar to a SMBH.
Apr 12, 2011
Rank: 5 / 5 (1)
Careful Skeptic, some might get the idea that you believe in hidden variables.........
Apr 19, 2011
Rank: 1 / 5 (1)
Noted..