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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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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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21 Jun 2011 | Niki Saoulidou | Physics
We are living in perhaps the most exciting times of the past few decades in High Energy Physics: searching for the Higgs boson, as well as expected and unexpected new physics with one of the most elaborate accelerators ever built, and with complex...
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06 Jun 2011 | Lucas Taylor | Physics
A search for physics beyond the standard model in events with at least three leptons and any number of jets is presented. The data sample corresponds to 35 inverse picobarns of integrated luminosity in pp collisions at sqrt(s) = 7 TeV collected by...
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30 May 2011 | Lucas Taylor | Physics
Curious minds might wonder why the LHC, which successfully ran at 7 TeV during the pp run of 2010 began the new year with proton collisions at a significantly less energy of 2.76 TeV. The fact is that this lower energy allowed experiments such as...
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23 May 2011 | Lucas Taylor | Physics
The CMS collaboration is presenting its latest results this week at the annual Quark Matter conference, held this year in Annecy, France. The results are based on analyses of data collected during the LHC's heavy-ion run in the last two weeks of...
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23 May 2011 | Achintya Rao | Physics
In our Universe today, quarks are always bound together by gluons to form "composite" particles such as protons and neutrons. The Quark-Gluon Plasma, or QGP, often described as a soup-like medium, is a hot, dense state in which these quarks and...
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23 May 2011 | Achintya Rao | Physics
The CMS experiment has made several unique measurements using data from LHC collisions of lead nuclei (PbPb, November 2010) at centre-of-mass energies of 2.76 TeV per nucleon pair. Phenomena measured for the first time in nucleus-nucleus collisions...
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01 Mar 2011 | Lucas Taylor | Physics
The CMS Collaboration at CERN released a paper today entitled "First Measurement of W+W− Production and Search for Higgs Boson in pp Collisions at √s = 7 TeV". The paper is the first produced by CMS that includes searches for the Higgs boson at the...
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12 Jan 2011 | Lucas Taylor | Physics
The Compact Muon Solenoid (CMS) Collaboration at CERN’s Large Hadron Collider (LHC) has announced the results of the search for supersymmetry (SUSY) in events with jets and missing transverse energy. The search is based on data accumulated by the...
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15 Dec 2010 | Achintya Rao | Physics
The CMS experiment at CERN's Large Hadron Collider (LHC) has completed a search for microscopic black holes produced in high-energy proton-proton collisions. No evidence for their production was found and their production has been excluded up to a...
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