tag:blogger.com,1999:blog-3904639295706642486.post6191145182023391181..comments2023-10-21T08:48:37.363-07:00Comments on Zone-Reflex: The fifth force found?Unknownnoreply@blogger.comBlogger12125tag:blogger.com,1999:blog-3904639295706642486.post-27473966913017296362011-04-16T08:57:32.398-07:002011-04-16T08:57:32.398-07:00http://theoryofeverything.org/TOE/JGM/ToE.pdf Greg...http://theoryofeverything.org/TOE/JGM/ToE.pdf Gregory Moxnes<br /><br />M Theory and/or Loop Quantum Gravity hold the promise of resolving the conflict between general relativity and quantum mechanics but lack experimental connections to predictability in physics. A connection is made to these and other theories vying for the title of a “Theory of Everything” by questioning the value of the traditional Planck unit reference point for the scales at which they operate. It also suggests a cosmological model which has acceleration as being fundamental. It provides for an intuitive understanding of the Standard Model and its relationship to particle masses and the structure of the atom. The prediction of particle mass and lifetimes is a good indicator for its validity.Ullahttps://www.blogger.com/profile/16634036177244152897noreply@blogger.comtag:blogger.com,1999:blog-3904639295706642486.post-17174910441728488832011-04-09T03:23:10.501-07:002011-04-09T03:23:10.501-07:00http://arxiv.org/PS_cache/arxiv/pdf/0810/0810.0713...http://arxiv.org/PS_cache/arxiv/pdf/0810/0810.0713v1.pdfUllahttps://www.blogger.com/profile/16634036177244152897noreply@blogger.comtag:blogger.com,1999:blog-3904639295706642486.post-58519133147675740232011-04-09T03:03:13.773-07:002011-04-09T03:03:13.773-07:00Not Even Wrong in 30 oct 2008:
This is not a signa...Not Even Wrong in 30 oct 2008:<br />This is not a signature characteristic of supersymmetry or any of the other known heavily-studied classes of models. If real, as far as I’m aware it’s something genuinely unexpected. Perhaps phenomenology experts can point to some less well-known models with this kind of signature. The only such thing I’m aware of is a very recent paper from three weeks ago by Arkani-Hamed and Weiner, entitled LHC Signals for a SuperUnified Theory of Dark Matter. They discuss a theory of dark matter involving a new hidden gauge symmetry, broken near the GeV scale, saying that this is “motivated directly by striking Data from the PAMELA and ATIC collaborations”. In these models there can be Gev-scale Higgs and gauge particles decaying to an anomalously large number of leptons. They discuss the question of whether the parameters of such models can be adjusted to give large decay lengths, and predict the observation of events that “contain at least two “lepton jets”: collections of n > 2 leptons, with small angular separations and GeV scale invariant masses”, pretty much just what CDF sees . Since the CDF paper undoubtedly has been the topic of intense discussion among the 450 or so physicists in the collaboration for many months now...<br /><br />And the preprint: In this short note we point out the consequences of the most straightforward embedding of this simple picture within low-energy SUSY, in which G_Dark breaking at the GeV scale arises naturally through radiative corrections, or Planck-suppressed operators. The theory predicts major additions to SUSY signals at the LHC. A completely generic prediction is that G_Dark particles can be produced in cascade decays of MSSM superpartners, since these end with pairs of MSSM LSP's that in turn decay into the true LSP and other particles in the dark sector. In turn, the lightest GeV-scale dark Higgses and gauge bosons eventually decay back into light SM states, and dominantly into leptons. Therefore, a large fraction of all SUSY events will contain at least two ``lepton jets'': collections of n>= 2 leptons, with small angular separations and GeV scale invariant masses. Furthermore, if the Dark Matter sector is directly charged under the Standard Model, the success of gauge coupling unification implies the presence of new long-lived colored particles that can be copiously produced at the LHC. http://arxiv.org/abs/0810.0714Ullahttps://www.blogger.com/profile/16634036177244152897noreply@blogger.comtag:blogger.com,1999:blog-3904639295706642486.post-41728348806001835522011-04-09T02:48:07.559-07:002011-04-09T02:48:07.559-07:00New scientist: But if technicolour is correct, it ...New scientist: But if technicolour is correct, it would not be able to resolve all the questions left unanswered by the standard model. For example, physicists believe that at the high energies found in the early universe, the fundamental forces of nature were unified into a single superforce. Supersymmetry, physicists' leading contender for a theory beyond the standard model, paves a way for the forces to unite at high energies, but technicolour does not.<br /><br />Figuring out which theory – if either – is right means combing through more heaps of data to determine if the new signal is real. Budget constraints mean the Tevatron will shut down this year, but fortunately the CDF team, which made the find, is already "sitting on almost twice the data that went into this analysis", says Roser. "Over the coming months we will redo the analysis with double the data."<br /><br /><br /><br />But the GUT scenario may not be true at all. It is too just a fancypicture? The forces may be dichotomous.Ullahttps://www.blogger.com/profile/16634036177244152897noreply@blogger.comtag:blogger.com,1999:blog-3904639295706642486.post-58067833996281310102011-04-08T23:35:54.193-07:002011-04-08T23:35:54.193-07:00"You see the extra little bump around 150 GeV..."You see the extra little bump around 150 GeV, that’s what’s getting everyone so excited. It’s unlikely that the data are a good fit to the prediction; the “KS (Kolmogorov-Smirnov) probability” is given as 5×10-5, which means that it’s not bloody likely."<br /><br />I suppose they have looked at that before publishing.<br /><br />If 3-sigma results in particle physics usually go away, then why has this latest result gotten so much attention? <br /><br />Ye, why? Because it has been there so long already, and is not fading away? It would be ironic if the hunt for Higgs would have made this one overseen. But the sample is small.Ullahttps://www.blogger.com/profile/16634036177244152897noreply@blogger.comtag:blogger.com,1999:blog-3904639295706642486.post-49112628213110610652011-04-08T13:45:25.719-07:002011-04-08T13:45:25.719-07:00Have you read this article by Sean Carroll? It'...Have you read <a href="http://blogs.discovermagazine.com/cosmicvariance/2011/04/08/science-is-hard/" rel="nofollow">this article</a> by Sean Carroll? It's only been 2 days and already the skeptics are coming out of the woodwork.Steven Colyerhttps://www.blogger.com/profile/10435759210177642257noreply@blogger.comtag:blogger.com,1999:blog-3904639295706642486.post-81365124908125506052011-04-08T13:42:08.280-07:002011-04-08T13:42:08.280-07:00Physics Without Ideology – Bite by Bite
A satiric...Physics Without Ideology – Bite by Bite<br /><br />A satirical blog about the ideologies and fixed ideas found in fundamental physics.<br /><br />8 April 2011<br />http://physicswithoutideology.blogspot.com/2011/04/czech-communist-dreams-up-proof-of.html<br />Czech communist dreams up a proof of string theory against evidence<br />A communist is a person that values his ideology more than the facts, and uses violence to spread it. A well-known czech communist - and sadly also physicist, once researcher at Harvard - has now transformed the recent Fermilab error in their data evaluation first into a new force, then into a invented Z' particle and finally into a proof of string theory. These are not lies any more, but fraud.<br /><br />So we see that in Czechia, at least one string theorist is so deranged that he needs to deceive others for a living. If belief in supersymmetry is only a delusion, belief in string theory is now definitely proven to be a mental condition.<br />Posted by Nemo at 10:31 <br /><br />Another post on the same blog:<br />3 April 2011<br />Fun about Motl<br />True, one should not waste energy about Motl. But he is so smart, rude and unreasonable that I cannot resist making fun of him. One of my male friends – yes, they do exist – has the right description for what guys like him are doing in physics research: mental masturbation.<br /><br />It must be said that we speak about Motl's past: he is not a physicist any more. At present he converted to being a frustrated anti-global-warming activist. In his research past, the conjectures he explored – supersymmetry and strings – were only for his own enjoyment. Nobody else cares about these conjectures, because they do not agree with experiment. But a few rare people do share the same hobby.<br /><br />The best is that Motl recently told in his blog why he doesn't want to explain his past research to the general public: "it is like throwing pearls to swines." I had never seen this expression, which is from the bible, applied to this specific hobby.Ullahttps://www.blogger.com/profile/16634036177244152897noreply@blogger.comtag:blogger.com,1999:blog-3904639295706642486.post-33677300346127384072011-04-08T13:01:34.969-07:002011-04-08T13:01:34.969-07:00This all begins to sound like non-commutative geom...This all begins to sound like non-commutative geometry a lot. Kea has maybe a clue what it is about? It was polarizing, someone said.<br /><br />If there is a fifth force, and it is not Higgs, then maybe there are six forces all together, one more to be found? <br /><br />I wonder what Nima think of this? 'Slicing' could point to manysheeted spacetime, or phase space.<br /><br />It is quite hard to think this would be about fundings. It is a too big news. If anything such is revealed the credibility will suffer very much. Can they take the risk?Ullahttps://www.blogger.com/profile/16634036177244152897noreply@blogger.comtag:blogger.com,1999:blog-3904639295706642486.post-81561058811447187422011-04-08T03:39:36.012-07:002011-04-08T03:39:36.012-07:00Minimal Walking Technicolor? I have no idea.
The...Minimal Walking Technicolor? I have no idea. <br /><br />The whole mess with Tevatron is painful to me. I've worked for the US Government, briefly, and I can assure you that as an operation comes to a close, the employees, including and especially management, go out of their way to keep everyone fully employed for as long as possible. If it seems I am saying that this is politically motivated, I am not because I simply do not know, and that's the painful part. I want to know, and ignorance hurts my brain. Especially my own.<br /><br />Rather that gather a headache, I will go forward and assume something new has been found, the worst then would be simple disappointment rather than disgust. <br /><br />All I can say then is that if this IS technicolor, which competes with the Higgs, then hoo boy oh boy will there be a ton of new physics calculations to be done, so these soon to be out-of-work fine Fermilab scientists should find good employment in many places, even if that means they have to move to Europe and CERN. Or England. The Brits seem willing to believe just about anything, bless their hearts. You can't say they're not open-minded.Steven Colyerhttps://www.blogger.com/profile/10435759210177642257noreply@blogger.comtag:blogger.com,1999:blog-3904639295706642486.post-12947753543209468652011-04-07T12:56:38.895-07:002011-04-07T12:56:38.895-07:00Thanks.
They try the best to explain it away (Lub...Thanks.<br /><br />They try the best to explain it away (Lubos, Sean). But this 'bump' has been seen earlier too, so there are good chances it will stay. This has been known for months they say, and that would mean it has been checked quite thoroughly, I guess, before it was published.<br /><br />Shelton has talked of this<br />http://www.physics.uoregon.edu/~soper/ILC2011/Shelton.pdf<br /><br />What would the new force be? Strong chirality? Dark matter coupling?<br />Ulla.Ullahttps://www.blogger.com/profile/16634036177244152897noreply@blogger.comtag:blogger.com,1999:blog-3904639295706642486.post-28887548910633635292011-04-07T06:39:12.470-07:002011-04-07T06:39:12.470-07:00What a DAY yesterday was, huh Ulla? The Z-prime an...What a DAY yesterday was, huh Ulla? The Z-prime announcement at Tevatron, more Multiverse madness, LISA cancelled (at least the USA contribution, not ESA's, but can ESA do it by itself?), AND Glenn Beck of the US's Tea Party was fired by uber-Conservative FOX News! I'm not sure I can take too many day days like that. Hopefully today will be quieter. :-)<br /><br />Yes, but this was the big one. 3.3 sigma confidence level, yes? That's fine, a bit better than 3, but I'm sad to see so many 3-sigma things rushed to announcement in the past year.<br /><br />What will it take to achieve 5-sigma? Results from ATLAS? How soon would you expect that to happen?<br /><br />Thanks you very much for your great overview at this post. Another good (and funny!) link is by Professor and Theoretical Astrophysicist Ethan Siegel at his weblog, <a href="http://scienceblogs.com/startswithabang/2011/04/have_we_discovered_new_physics.php" rel="nofollow"><i>Starts With A Bang</i>, here</a>.Steven Colyerhttps://www.blogger.com/profile/10435759210177642257noreply@blogger.comtag:blogger.com,1999:blog-3904639295706642486.post-11476360211728573002011-04-07T06:29:56.872-07:002011-04-07T06:29:56.872-07:00testtestSteven Colyerhttps://www.blogger.com/profile/10435759210177642257noreply@blogger.com