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[CottonWood] Large Hadron Collider « CottonWood: page discussing the accuracy of the book’s portrayal of the LHC, CERN, and particle physics in general.[38] The movie version of the book had footage filmed on-site at one of the experiments at the LHC; the director, Ron Howard, also met with CERN experts in an effort to make the science in the story more accurate.[39] CERN employee Katherine McAlpine’s “Large Hadron Rap”[40] surpassed two million YouTube views on September 10, 2008.[41][42][43]

[Scientific Blogging] Answers To Selected Questions: That is the case of bottom quarks: since the colour of quarks is a unobservable characteristics, we must add the contribution of the three colours when we compute the branching fraction to quarks. The other subtlety in the problem is due to the fact that b-quarks have a "rest" mass of 4.2 GeV, but when one considers these particles in high-energy interactions, their effective mass is smaller: this is due to the fact that strong interactions become less strong as energy increases, and the quark mass is affected by this variation.

[Breaking News] Large Hadron Collider may start collisions by Christmas: WASHINGTON - The Large Hadron Collider (LHC), or the 'Big Bang Machine', as it is popularly called, is fizzling out, as many of the magnets meant to whiz subatomic particles around the 17-mile underground machine outside Geneva have mysteriously lost their ability to operate at high energies. According to a report in New York Times, after 15 years and 9 billion dollars, and a showy "switch-on" ceremony last September, the LHC, the giant particle accelerator outside Geneva, has to yet collide any particles at all, thanks to thousands of bad electrical connections.

[cerncourier: CERN Courier] Exclusive events give new window on LHC physics - CERN Courier: In the process of checking this measurement, the CDF physicists came across another exclusive physics process that had never been seen before at a proton–(anti)proton collider. They found 16 events that are consistent with the QED prediction that photons travelling with the proton and antiproton can interact to produce only an electron–positron pair (γγ → e+e–) without breaking up the proton and antiproton (Abulencia et al.

[Interactions.org News Wire] 11 March 2009 - Fermilab: Precision measurement of W boson mass ...: Precision measurements of the W mass provide a window on the Higgs boson and perhaps other not-yet-observed particles. The exact value of the W mass is crucial for calculations that allow scientists to estimate the likely mass of the Higgs boson by studying its subtle quantum effects on the W boson and the top quark, an elementary particle that was discovered at Fermilab in 1995.

[symmetry breaking] symmetry breaking » Blog Archive » W boson squeezes Higgs particle: Precision measurements of the W mass provide a window on the Higgs boson and perhaps other not-yet-observed particles. The exact value of the W mass is crucial for calculations that allow scientists to estimate the likely mass of the Higgs boson by studying its subtle quantum effects on the W boson and the top quark, an elementary particle that was discovered at Fermilab in 1995.

[Scientific Blogging] The Slides Of My Seminar For LHCb - Part I: Slide thirteen: a few plots that describe how the response of the CDF calorimeter to jet energy is equalized for disuniformities as a function of angle of incidence (bottom left), and how the study of the calorimeter response to single particles (top right, single particles in data; and center right, pions from test-beam runs) allows to tune the simulation, which is then used to get an absolute correction function (bottom right).

[Universe Today] Fermilab Putting the Squeeze on Higgs Boson | Universe Today: The W boson is a carrier of the weak nuclear force and a key element of the Standard Model of elementary particles and forces, which also predicts the Higgs boson. Its  exact mass is crucial for calculations  to estimate the likely mass of the Higgs boson by studying its subtle quantum effects on the W boson and the top quark, an elementary particle that was discovered at Fermilab in 1995.

[Comments for Cosmic Variance] The LHC Dashboard | Cosmic Variance | Discover Magazine: Now for the reality check, as presented last week by the LHC project manager Lyn Evans (insert drumroll here): The machine will be closed in August 2007 and first collisions will occur in November 2007 at center of mass energy 1.8 TeV. The same energy as the previous run (known as Run I) at the Tevatron!

[US LHC Blog] US LHC Blog » Growing Pains: Really technical question for anyone who knows that bit of the physics: I know that according to relativity, a black hole as seen from our reference frame takes infinitely long to form (because time stops at the event horizon). So we can never observe an actual black hole (short of falling into one so we experience a different reference frame).

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