Tag: QCD
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Four gets you more: understanding the strong force with four-way energy correlations
The strong nuclear force is the most mysterious of the four fundamental forces of nature.
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CMS observes unexplained particle states
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.
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Measurement of the underlying event in the Drell-Yan process in proton-proton collisions at sqrt(s) = 7 TeV
A measurement of the underlying event (UE) activity in proton-proton collisions at a centre-of-mass energy of 7 TeV is performed using Drell-Yan events in a data sample corresponding to an integrated luminosity of 2.2 fb−1 (inverse femtobarns), collected by the CMS experiment at the LHC.
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Search for Supersymmetry at the LHC in Events with Jets and Missing Transverse Energy
Read the paper: SUS-11-003 The analysis shows no excess of events over the Standard Model expectations.
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Measurement of the tt-bar Production Cross Section in pp Collisions at 7 TeV in Lepton + Jets Events Using b-quark Jet Identification
Read the paper: TOP-11-003 The measured production rates of Top-antiTop pairs, where one lepton and four jets of particles is observed in the final state, show good agreement with Quantum Chromodynamics (QCD), the theory of the strong interaction.
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Measurement of the Differential Cross Section for Isolated Prompt Photon Production in pp Collisions at 7 TeV
Read the paper: QCD-10-037 This paper extends CMS’s previous measurements of the production rates of isolated prompt photons.
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Measurement of the Drell–Yan Cross Section in pp Collisions at 7 TeV
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.
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Measurement of the Drell–Yan Cross Section in pp Collisions at 7 TeV
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.
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Measurement of the Drell–Yan Cross Section in pp Collisions at 7 TeV
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.