Javier Montejo Berlingen
(IFAE - Barcelona (ES)),
Nikiforos Nikiforou
(Columbia University (US))
21/03/2012, 17:07
Eleanor Lucy Davies
(University of Oxford (GB)),
Rui Wang
(University of New Mexico (US)),
Samah Abdel Khalek
(Universite de Paris-Sud 11 (FR))
21/03/2012, 17:07
This poster describes the performance of 2 parts of ATLAS:
- The Inner Detector which consists of 3 subdetectors: the Pixel detector, the SemiConductor Tracker (or SCT) and the Transition Radiation Tracker (or TRT).
Here, we report on Pixel detector and SCT performance over 2011.
- ALFA detector which will determine the absolute luminosity of the CERN LHC at the ATLAS Interaction Point...
George Iakovidis
(National Technical Univ. of Athens (GR)),
Lulu Liu
(University of Michigan (US))
21/03/2012, 17:07
During the 2011 LHC Data taking period the ATLAS Detector recorded 5.22 fb-1 which is 96.5% of the delivered data from proton-proton collisions. The recorded data with Muon Spectrometer was at a level of more than 99% good for physics analysis. This illustrates an excellent performance. Starting the 2012 data taking period the Muon Spectrometer will perform to more than 99% operational...
Marco Vanadia
(Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut) (D)
21/03/2012, 17:07
Muons are a key ingredient for many physics analyses in ATLAS. A measurement of the performance of the muon reconstruction and identification on LHC collisions recorded in 2011 is presented, with a particular focus on the effects of pile-up and a comparison with Monte-Carlo simulations.
Mr
Jinzhong Zhang
(Northeastern University (US))
21/03/2012, 17:07
The CMS experiment has developed a variety of algorithms that use the impact parameters of charged-particle tracks, the properties of reconstructed decay vertices, the presence of a lepton or combinations of these quantities to select samples of jets with different b purities.The performance of the algorithms in terms of efficiency and misidentification probability has been measured from...
Chris Lester
(University of Pennsylvania (US))
21/03/2012, 17:07
Jean-Baptiste Sauvan
(Universite de Paris-Sud 11 (FR))
21/03/2012, 17:07
Guilbaud Maxime
(Univ. de Lyon, CNRS/IN2P3)
21/03/2012, 17:07
During the 2010 PbPb run, some collisions took place at different vertex location with respect to the nominal one in all LHC experiments. A non-negligible number of those "satellite collisions" have been recorded by the ALICE experiment. Using a displaced vertex technique, the knowledge of the ALICE material budget and geometry have been improved.
Jennifer Lynn Godfrey
(SFU Simon Fraser University (CA))
21/03/2012, 17:07
Olivier Bondu
(Universite Claude Bernard-Lyon I (FR))
21/03/2012, 17:07
Radiative Z decays to pairs of muons, where one of the muons emits a Bremsstrahlung photon, can be used for numerous dedicated photon calibration and measurement purposes : they can be cleanly selected and their kinematics are well-constrained by the Z boson mass and the precision on the muon momenta. This poster presents three use cases, based on data recorded by the CMS experiment in 2010 and 2011.
Christoph Wasicki
(Deutsches Elektronen-Synchrotron (DE))
21/03/2012, 17:07
With an average number of up to 23 pile-up interactions per bunch crossing (μ) in 2011 data taking the ATLAS Inner Detector (ID) already reached its design specifications. This poster presents studies in data and simulation demonstrating that the ID track reconstruction is well-prepared for the high pile-up expected in 2012.
