• CERN's CMS detector discovers new particle: the Ξb*0 beauty baryon
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[IMG]http://public.web.cern.ch/public/features/XIB.jpg[/IMG] The Ξ[SUB]b[/SUB][SUP]*0[/SUP] particle shows a clear signal (blue) above the background level (red) [QUOTE]The Compact Muon Solenoid (CMS) experiment at CERN has [URL="http://arxiv.org/abs/1204.5955"]submitted a paper for publication[/URL] describing the first observation of a new particle, an excited beauty baryon called the Ξ[SUB]b[/SUB][SUP]*0[/SUP] (Ξ[SUB]b[/SUB] is pronounced "Csai - bee").Baryons are subatomic particles whose mass is equal to or greater than that of a proton. The [URL="http://public.web.cern.ch/public/en/Science/StandardModel-en.html"]Standard Model of particle physics[/URL] predicts the existence of Ξ[SUB]b[/SUB] baryons in charged, neutral or excited states. Though charged and neutral Ξ[SUB]b[/SUB] baryons have been seen in detectors before, this is the first time the an excited Ξ[SUB]b[/SUB] beauty baryon has been observed. CMS measured the mass of the new particle to be 5945.0 ± 2.8 MeV.CMS physicists found the Ξ[SUB]b[/SUB][SUP]*0[/SUP] signal in a sample of about 530 trillion proton—proton collisions (an integrated luminosity of 5.3 inverse femtobarns) which were delivered by the Large Hadron Collider (LHC) operating at a centre-of-mass energy of 7 TeV in 2011.The Ξ[SUB]b[/SUB][SUP]*0[/SUP] adds to a growing list of discoveries at CERN in recent months. In December the ATLAS experiment [URL="http://www.atlas.ch/news/2011/ATLAS-discovers-its-first-new-particle.html"]announced the observation of a new "quarkonium state"[/URL] containing a beauty quark bound with its antiquark, and in November the LHCb experiment [URL="http://lhcb-public.web.cern.ch/lhcb-public/"]reported a new effect[/URL] in the decays of particles containing a charm quark (or antiquark).With the LHC now running at 4TeV per beam, the collision number is set to increase, which enhances the machine's discovery potential considerably, and opens up new possibilities for searches for new and heavier particles.[/QUOTE] [URL]http://public.web.cern.ch/public/[/URL] Thought some of you may find this interesting. Edit: The particle may not be useful, but just to confirm things predicted by mathematics. However with two quit recent discoveries, LHC is showing a lot of potential. Who knows what may be found next.
Ah yes the The Ξb*0 particle, of course! On a more serious note, I don't understand anything about that graph but I'm excited to hear the news!
I don't understand a single word of this article
Ξb is pronounced "Csai - bee" and how do you pronounce Csai?
To think that we could have been discovering this stuff years ago if the Superconducting Supercollider was built. The LHC makes me so excited because it's tapping into energy that has never before been tapped. It is observing particles and phenomena that no human has ever observed before. That's absolutely incredible. I wonder if soon the LHC will be able to test parts of M-Theory and String Theory. From what I've heard many of the people involved in the development of these theories say that they are close to having testable equations and experiments to confirm some ideas.
[QUOTE=AJisAwesome15;35738448]I don't understand a single word of this article[/QUOTE] I tried reading it but then it looked like this [QUOTE]The Compact Muon Solenoid (CMS) experiment at CERN has submitted a paper for publication describing the first observation of a new particle, an excited beauty baryon called the Ξb*0 (Ξb is pronounced "Csai - bee").Baryons are subatomic particles whose mass is equal to or greater than that of a proton. Teh Ndtradsa Lmeod fo tpalicre hpsiscy cispedtr teh cteienxse fo Ξb yosanbr ni drcgeah, atrleun ro ixdceet saetts. Ghouth ecradhg nda nrtealu Ξb bnyoars aveh enbe seen in odcetstre beerfo, hsti is eht isftr eimt hte an xdcieet Ξb uaetyb rnoyab sha neeb vrobedse. CSM aesmerud het smas of eht wen laceirtp to be 5495.0 ± 2.8 Mev.CMS spiitsysch dfonu teh Ξb*0 ilsagn ni a lmpsae fo auotb 035 rlniiotl poront—ptoonr inilsosloc (an atengetdri ilnoiusymt fo 5.3 vieenrs brmsnatfoe) cihhw wree eelvridde yb eth Eargl Hnrado Lecoridl (HCL) ɐuoǝʇƃıdɹ ʇɐ ɐ uǝǝɹʇɔ-ɟo-ssɐɯ ƃɹǝuǝʎ ɟo 7 ʇǝʌ ıu 2011˙ʇɥǝ ξq*0 sppɐ oʇ ɐ oƃʍɹuıƃ ןʇsı oɟ ıssɹǝǝɔoʌıp ʇɐ ɹǝɔu uı ǝuɹǝɔʇ ɥoɯʇus˙ ıu ɹǝǝqɯpɔǝ ʇɥǝ ʇsɐɐן ıǝxǝʇǝuɯɹd unuouɐǝpɔ ǝɥʇ ıoɐɹoquʌsʇǝ oɟ ɐ ǝʍu „unnɐıbɹɯoʞ ɐʇʇsǝ„ ıɔuuƃıɐoʇu ɐ ʎǝʇqɐn ɐnɹbʞ pouqn ıʇʍɥ sıʇ ɹbɐʞınuɐʇ' pɐu uı ɹouqɯǝǝʌ ʇǝɥ ɔqɥן ıdɯɹxǝǝuǝʇ ǝoʇɹpdɹǝ ɐ ʍuǝ ɟɔɟʇǝǝ uı ǝɥʇ ʎɔsǝpɐ oɟ ʇɹɔɐdısǝן uɔıoƃuɐʇuı ɐ ɥɔɯɹɐ bɐɹnʞ )oɹ nʞıbuɐʇɐɹ(˙ʇʍıɥ ʇǝɥ ɔɥן ʍou ƃɹınuuu ʇɐ ʌʇǝ4 ǝɹd ɯǝqɐ' ɥǝʇ souııןןoɔ nɯquǝɹ sı ʇsǝ ʇo ɔɐǝsıǝɹu' ıɥɥʍɔ ɔɥǝsuuɐǝ ɥʇǝ uɔɥɯǝɐı,s sǝoıʌɔɹʎp dʇʇɐןuoǝı usqoʎıǝɐɔןɹp' upɐ usdǝo nd uǝʍ ssoıdǝıןʇsıqı ɹoɟ ɹssɐǝɔɥǝ ɟɹo ʍuǝ pɐu ǝɐɥıʌɹǝ ǝןʇɔıɹsɐd˙[/QUOTE] Still cool though.
[QUOTE=Swebonny;35738303][IMG]http://public.web.cern.ch/public/features/XIB.jpg[/IMG] [/QUOTE] Let me just whip out these ancient scrolls to decipher the text on the x-axis.
It clearly says J divided by Trident times E missing a few things times a positive Pi times M holy shit what
[QUOTE=OvB;35738533]Let me just whip out these ancient scribes to decipher the text on the x-axis.[/QUOTE] The M stands for the mass of the particle inside the parenthesis. When they look at the difference between the masses and distribute them in some specific way they find that the mass difference peaks at 14.84 MeV. I think X axis simply saying Mass of A - Mass of B - Mass of C. [editline]28th April 2012[/editline] Read the abstract: [URL]http://arxiv.org/pdf/1204.5955v1.pdf[/URL]
[QUOTE=Swebonny;35738652]The M stands for the mass of the particle inside the parenthesis. When they look at the difference between the masses and distribute them in some specific way they find that the mass difference peaks at 14.84 MeV. I think X axis simply saying Mass of A - Mass of B - Mass of C. [editline]28th April 2012[/editline] Read the abstract: [URL]http://arxiv.org/pdf/1204.5955v1.pdf[/URL][/QUOTE] That makes it less confusing.
[QUOTE=yawmwen;35738473]To think that we could have been discovering this stuff years ago if the [B]Superconducting Supercollider[/B] was built. The LHC makes me so excited because it's tapping into energy that has never before been tapped. It is observing particles and phenomena that no human has ever observed before. That's absolutely incredible. I wonder if soon the LHC will be able to test parts of M-Theory and String Theory. From what I've heard many of the people involved in the development of these theories say that they are close to having testable equations and experiments to confirm some ideas.[/QUOTE]The name alone sounds kickass. [quote]The project was cancelled in 1993 due to budget problems.[/quote] That's what it always seems to come down to isn't it? It baffles me really, we continue to use the money we DON'T have and devote it killing each other. Don't any of those old farts in congress realize that killing each other DOESN'T WORK ANYMORE? [quote]The Superconducting Super Collider was a particle accelerator complex under construction in the vicinity of Waxahachie, Texas that was set to be world's largest and most energetic, surpassing the current record held by the Large Hadron Collider.[/quote] Yeah guys why should we fund this shit it obviously doesn't help us in the slightest right? It probably had been costing us billions and billions of dolla- [quote]Congress officially canceled the project October 21, 1993[9] after [B]$2 billion[/B] had been spent.[/quote] What a bunch of bullshit.
[url=http://www.facepunch.com/threads/1180119]See guys?[/url] It [I]is[/I] possible to have a mathematically better face than other people! You just need to have more beauty baryons than anybody else.
[QUOTE=Killer900;35738795] What a bunch of bullshit.[/QUOTE] The worst part? It was basically ready for the actual collider bits. Most of the infrastructure was already built. The tunnels were dug, buildings made and finished, everything was already there. It sat there empty for 15 years until someone bought it. [img]http://i.imgur.com/HZ7V7.jpg[/img] [img]http://i.imgur.com/NXQMh.gif[/img] [img]http://i.imgur.com/DBmWE.jpg[/img] They even had most of the design and testing ready for the tubes [img]http://i.imgur.com/CZY0Y.jpg[/img] When the thing was cancelled, most of the physicists and personnel already working there jumped ship to the LHC, and the result was a mini recession on the Dallas area. During the events leading up to the project's cancellation, Roy Schwitters (SSC Director) was famously quoted, "The SSC is becoming the victim of the revenge of the C students."
I'll try to explain what this baryon is in simple terms: atoms, as you probably know are made of protons, neutrons, and electrons. Protons and neutrons are made up of elementary particles called quarks, which come in six different 'colors'. Normal matter you and I encounter only is comprised of 'up' and 'down' quarks. The other four quarks are similar to the first two, but are more massive and probably have other characteristics I'm not aware of. Quarks like the up variety are 'top' or 'strange'. Quarks like the down variety are 'bottom' or 'charm'. What's been examined is a baryon (a composite particle made up of quarks) of greater mass analogous in a way to other baryons we normally encounter. The discovery adds support or proves that the model we have for quark bonding is accurate. Sorry for any inaccuracies, I'm not an expect and I'm going off memory entirely.
[QUOTE=Biotoxsin;35739105]I'll try to explain what this baryon is in simple terms: atoms, as you probably know are made of protons, neutrons, and electrons. Protons and neutrons are made up of elementary particles called quarks, which come in six different 'colors'. Normal matter you and I encounter only is comprised of 'up' and 'down' quarks. The other four quarks are similar to the first two, but are more massive and probably have other characteristics I'm not aware of. Quarks like the up variety are 'top' or 'strange'. Quarks like the down variety are 'bottom' or 'charm'. What's been examined is a baryon (a composite particle made up of quarks) of greater mass analogous in a way to other baryons we normally encounter. The discovery adds support or proves that the model we have for quark bonding is accurate. Sorry for any inaccuracies, I'm not an expect and I'm going off memory entirely.[/QUOTE] [img]http://i.imgur.com/QrMTH.png[/img] Might help.
[quote]Baryons are subatomic particles whose mass is equal to or greater than that of a proton. The Standard Model of particle physics predicts the existence of Ξb baryons in charged, neutral or excited states. Though charged and neutral Ξb baryons have been seen in detectors before, this is the first time the an excited Ξb beauty baryon has been observed. CMS measured the mass of the new particle to be 5945.0 ± 2.8 MeV. [/quote] Ah yes! I know some of these words, such as "the" and "this"
Whilst this intrigues me, does it have any practical uses?
[QUOTE=ironman17;35742511]Whilst this intrigues me, does it have any practical uses?[/QUOTE] Why does it matter? We have different branches of science for different reasons! Not everything needs to be practical or useful. Science evolved basically as a means for people to satisfy their curiosity in the first place; anything additional is just a bonus.
[QUOTE=ironman17;35742511]Whilst this intrigues me, does it have any practical uses?[/QUOTE] Yeah, a grand unified theory would allow us to explain just about everything in our universe and allow us to better understand how materials act at certain scales, leading to better medicines, more efficient machines, quantum computing and an unending list of other awesome shit.
[QUOTE=Biotoxsin;35739105]I'll try to explain what this baryon is in simple terms: atoms, as you probably know are made of protons, neutrons, and electrons. Protons and neutrons are made up of elementary particles called quarks, which come in six different 'colors'. Normal matter you and I encounter only is comprised of 'up' and 'down' quarks. The other four quarks are similar to the first two, but are more massive and probably have other characteristics I'm not aware of. Quarks like the up variety are 'top' or 'strange'. Quarks like the down variety are 'bottom' or 'charm'. What's been examined is a baryon (a composite particle made up of quarks) of greater mass analogous in a way to other baryons we normally encounter. The discovery adds support or proves that the model we have for quark bonding is accurate. Sorry for any inaccuracies, I'm not an expect and I'm going off memory entirely.[/QUOTE] The only major difference between the Up and down quarks and the other quarks, other than mass, is that they have a 'Strangness', 'Charm', 'Topness' and 'Bottomness' quantity, which have to be conserved during reactions. All other differences are whether they have a relative charge of -1/3 or 2/3, and another quantity only Up and down quarks have that I'm not sure what is.
[QUOTE=AJisAwesome15;35738448]I don't understand a single word of this article[/QUOTE] they found a new thing
Hmm, it saddens me that people would consider this as a waste of money.
The interesting thing about CERN (or one of them, rather) is that it collects so much data in one run it takes months to analyse all of it. Meaning that the data stored in CERN's servers right now probably contains a dozen new discoveries that we haven't found yet.
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