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16 Aug 2011 | Daniel Marlow | Collaboration
The number of events that an experiment observes is proportional to a quantity called the luminosity — a measure of how many collisions are occurring in the detector. An accelerator operating at high luminosity stands the best chance of producing...
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15 Aug 2011 | Dragoslav-Laza Lazic | Collaboration
This year's HCAL test beam run in July was completely devoted to studies of hardware that will be used in the upcoming upgrades. During the course of the two weeks the detector was moved in two independent setups – HF and the combined EB+HB+HO –...
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14 Aug 2011 | Sanjay Padhi | Physics
High-energy collisions with final states that include leptons (electrons, muons or taus) have played major roles in the history of physics. Several particles – such as J/ψ, W, and Z – as well as productions of pairs of Top quarks were discovered in...
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11 Aug 2011 | Boaz Klima | Collaboration
CMS published its 100th paper on 3rd August. This accomplishment, unprecedented in its pace, came as a result of many things working together extremely well. Primarily, the performance of the LHC accelerator during the last two years was terrific....
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09 Aug 2011 | Lucas Taylor | External news (e.g. BBC)
CERN, focus of research into the Big Bang and what makes the universe tick, on Thursday announced a new program -- fusing science with art to encourage painting and music inspired by the wonders of the cosmos.
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09 Aug 2011 | Achintya Rao | Physics
Read the paper: QCD-10-037 This paper extends CMS’s previous measurements of the production rates of isolated prompt photons. The production rates agree with the predictions of perturbative Quantum Chromodynamics (pQCD), although, at low transverse...
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08 Aug 2011 | Achintya Rao | External news (e.g. BBC)
The current data from the LHC show an effect which might, or might not, be the first indication of the presence of a Higgs boson. Most of this effect is due to the number of pairs of W bosons which are being produced in proton-proton collisions.
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08 Aug 2011 | Achintya Rao | External news (e.g. BBC)
This is a well-written piece exploring the need for more data and what possible interpretations there could be: http://www.guardian.co.uk/science/life-and-physics/2011/aug/06/1
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05 Aug 2011 | Lucas Taylor | Collaboration
Please try out the completely new CMS Web site: http://cmsexperiment.web.cern.ch. Leave comments by clicking the "GIVE FEEDBACK" link on the side of the page, or contact Lucas Taylor.
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02 Aug 2011 | Achintya Rao | Collaboration
Building 40 at CERN’s Meyrin site was abuzz with excitement as CMS formally inaugurated an art installation featuring a full-size high-resolution photograph of the CMS detector organised by the CMS Communications Group. The unveiling was met with...
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02 Aug 2011 | Achintya Rao | Physics
Read the paper: QCD-10-037 The measured Drell-Yan production rates, normalised to the production rates in the Z-boson region, show good agreement with the theoretical predictions. The Drell-Yan process occurs when a quark from one of the colliding...
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28 Jul 2011 | Achintya Rao | Physics
Read the paper: BPH-11-002 The observed numbers of events in both decay modes are consistent with those expected in the Standard Model. Upper limits on the branching fraction have been determined at 90% and 95% confidence levels (CL). The Standard...
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