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20 Feb 2013 | Marzena Lapka | Collaboration
On Saturday at 8.25am the shift crew in the CERN Control Centre extracted the beams from the Large Hadron Collider (LHC), bringing the machine’s first three-year running period to a successful conclusion. The following message marked the event on...
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20 Jan 2013 | Maria Chamizo Llatas | Collaboration
The LHC has just delivered the first pPb (proton-lead) collisions with stable beams of 2013 and CMS is happily running with all sub-detectors on. We are also having common triggers with TOTEM and everything is behaving very well. Thanks a lot to all...
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18 Jan 2013 | Achintya Rao | Physics
The new year brings a new type of collision at the LHC: the accelerator will smash protons and lead nuclei together, allowing CMS and the other LHC experiments to study the cold nuclear matter we expect these collisions to produce. Although we...
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18 Dec 2012 | Achintya Rao | Physics
In 2011, CMS presented early evidence that Upsilon (Υ) particles produced in lead-lead collisions “melt” as a consequence of interacting with the hot nuclear matter created in these heavy-ion interactions. CMS has since updated and extended this...
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10 Dec 2012 | Achintya Rao | Physics
In the vast particle landscape, there are, to borrow a phrase, known knowns (the Standard Model, for example), unknown unknowns (exotic extensions of the Standard Model and beyond), and those ever-interesting known unknowns. A recent CMS observation...
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26 Nov 2012 | Achintya Rao | Collaboration
Collaborations of high-energy physicists often number in the thousands, and this presents some unique challenges. “CMS is a big collaboration, with 3,000 people from diverse backgrounds, speaking different languages,” says Sudhir Malik, co-convener...
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22 Nov 2012 | Achintya Rao | Physics
At the Hadron Collider Physics (HCP) Symposium held in Kyoto, Japan on 12–16 November 2012, CMS presented many new results, including updates on the search for the Standard Model (SM) Higgs boson as well as Supersymmetry (SUSY). Several of these...
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30 Oct 2012 | Didier Claude Contardo | Collaboration
After three years of very successful operation that led to the discovery of a new boson in 2012, the LHC is scheduled for a series of upgrades that will enhance the experimental potential to study the nature of the new particle, and to extend the...
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30 Oct 2012 | Pedro Vieira De Castro Ferreira Da Silva | Physics
Amongst all known elementary particles, the top quark is peculiar: weighing as much as a Tungsten atom, it completes the so-called 3rd generation of quarks and is the only quark whose properties can be directly measured. Owing to its mass, the top...
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29 Oct 2012 | Marzena Lapka | Collaboration
Part of the CMS collaboration’s commitment to the ongoing experiments at the LHC is to participate in the detector shifts which occur 24 hours a day, seven days a week. Many researchers spend time in the CMS Control Room located in Cessy, France,...
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22 Oct 2012 | Wei Li | Physics
CMS has published its first paper on proton-lead (pPb) collisions, describing the observation of a phenomenon that was previously seen first in nucleus-nucleus collisions but also detected by CMS in proton-proton (pp) collisions. The effect is a...
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17 Oct 2012 | Jim Pivarski | Physics
All of the atoms in our bodies are made of electrons, protons and neutrons, and the protons and neutrons can be further broken down into quarks. Fundamentally, then, we are made of only two types of particles: electrons and quarks. But what do these...
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