Description
Short Talks on selected Posters
Eleni Petrakou
(Nat. Cent. for Sci. Res. Demokritos (NRCPS))
02/09/2010, 10:00
Poster
Poster and Presentation
The operation and general performance of the CMS electromagnetic calorimeter at sqrt{s} = 7 TeV are described. The first LHC beams have been used to finalize the commissioning of ECAL readout and trigger. The precision of the inter-channel synchronization and calibration has been verified and improved with collision data, exploiting decays of pi0s and eta into two photons, the phi invariance...
Ms
Regina Kwee
(CERN/Humboldt University of Berlin)
02/09/2010, 10:08
Poster
Poster and Presentation
Since the restart of the LHC, ATLAS has successfully recorded data at sqrt{s} = 0.9 and 7 TeV. The ATLAS trigger strategy realised a step-wise activation of the three level trigger system, starting with hardware-based first-level (L1) triggers and moving with increasing luminosities to the deployment of the software-based high-level triggers (HLT). We will present L1 and HLT triggers and their...
Verena Ingrid Martinez Outschoorn
(Harvard University)
02/09/2010, 10:16
Poster
Poster and Presentation
The first measurement of the production cross-sections for W and Z bosons in proton proton
interactions at sqrt(s) = 7 TeV are reported from the ATLAS experiment. Based
on its excellent capability for reconstructing both high pT electrons and muons, the
electron and the muon decay modes of the W/Z bosons are compared. First results for
the ratio of W/Z production and of W+/W- production...
Daniel Martschei
(Inst. fuer Experimentelle Kernphys.-Universitaet Karlsruhe-Unkno)
02/09/2010, 10:24
Poster
Poster and Presentation
We describe a measurement of the inclusive b-jet production in pp collisions at sqrt(s) = 7 TeV. The analysis has been done on the first physics data collected by the CMS experiment at the Large Hadron Collider at CERN. To improve the low p_T measurement, the jets are reconstructed with the Particle Flow algorithm. The experimental uncertainties from jet energy corrections, jet energy...
Dr
Jan Lueck
(EKP)
02/09/2010, 10:32
Poster
Poster and Presentation
After the first observation of the inclusive single top-quark production in the s- and t-channels by both CDF and D0, the Tevatron collaborations combined their measurements using the distributions of their multivariate discriminants. A Bayesian analysis is used to extract the cross section at a center of mass energy of 1.96 TeV from 3.2/fb (CDF) and 2.3/fb (D0) of data, respectively. For a...
