Alignment of the ATLAS Inner Detector Tracking System (2009)
Gorfine, Grant, Collaboration, For The ATLAS
The ATLAS detector, built at one of the interaction points of the Large Hadron Collider, is operational and has been collecting data from cosmic rays. This paper describes the track based alignment...
Tau physics at the LHC with ATLAS (2009)
Lai, Stan, Collaboration, For The ATLAS
The presence of tau leptons in the final state is an important signature in searches for physics beyond the Standard Model. Hadronically decaying tau leptons can be reconstructed over a wide...
Single-Top Cross Section Measurements at ATLAS (2009)
Ryan, P., Collaboration, For The ATLAS
The single-top production cross section is one third that of the top-pair production cross section at the LHC. During the first year of data taking, the determination of the major contributions to...
Top quark pair cross section prospects in ATLAS (2009)
Gaponenko, Andrei, Collaboration, For The ATLAS
The observation of the top quark will be an important milestone in ATLAS. This talk reviews methods that ATLAS plans to use to observe the top quark pair production process and measure its cross...
Measurement of the W + jets and Z + jets Cross Section with the ATLAS detector (2009)
Ahmad, A., Collaboration, For The ATLAS
The study of W or Z boson with accompanying hadronic jets in final states is of high importance at hadron colliders both to understand Standard Model processes and to measure background to Beyond...
Commissioning of the ATLAS Liquid Argon Calorimeters (2009)
Cooke, Mark S., Collaboration, For The ATLAS
A selection of ATLAS liquid argon (LAr) calorimeter commissioning studies is presented. It includes a coherent noise study, a measurement of the quality of the ionization pulse shape prediction, and...
Standard Model $H \gamma \gamma$ discovery potential with ATLAS (2009)
Fang, Yaquan, Collaboration, For The ATLAS
This contribution summarizes the discovery potential of the Standard Model Higgs boson using the $H \gamma \gamma$ decay with the ATLAS detector. The relevant detector performance aspects of photon...
Results from the Commissioning of the ATLAS Pixel Detector with Cosmic data (2009)
Galyaev, E., Collaboration, For The ATLAS
The ATLAS pixel detector is the innermost detector of the ATLAS experiment at the Large Hadron Collider at CERN. With approximately 80 million readout channels, the ATLAS silicon pixel detector is a...
Scalable Database Access Technologies for ATLAS Distributed Computing (2009)
Vaniachine, A., Collaboration, For The ATLAS
ATLAS event data processing requires access to non-event data (detector conditions, calibrations, etc.) stored in relational databases. The database-resident data are crucial for the event data...
Yang, Hai-Jun, Collaboration, For The ATLAS
We report results of a study of the Standard Model Higgs boson discovery potential through the W-pair leptonic decay modes with the ATLAS detector at LHC at 14 TeV center-of-mass energy. We used MC...
Discovery Potential of R-hadrons with the ATLAS Detector at the LHC (2009)
Mermod, Philippe, Collaboration, For The ATLAS
R-hadrons are predicted in a range of supersymmetric scenarios including split-supersymmetry and gauge-mediated supersymmetry breaking. In this paper, the discovery potential of the ATLAS experiment...
Elucidating Jet Energy Loss Using Jets: Prospects from ATLAS (2009)
Grau, N., Collaboration, For The ATLAS
Jets at the LHC are expected to provide the testing ground for studying QCD energy loss. In this contribution, we briefly outline the strategy that will be used to measure jets in ATLAS and how we...
Status of ATLAS and Preparation for the Pb-Pb Run (2009)
Dolejsi, Jiri, Collaboration, For The ATLAS
The ATLAS experiment took its first beam data in September 2008 and is actively preparing for the planned start of LHC collision data-taking in 2009. This preparation includes hardware and software...
Direct gamma and gamma-jet measurement capability of ATLAS for Pb+Pb collisions (2009)
Baker, Mark D., Collaboration, For The ATLAS
The ATLAS detector at the LHC is capable of efficiently separating photons and neutral hadrons based on their shower shapes over a wide range in eta, phi, ET, either in addition to or instead of...
Readiness of the ATLAS Experiment for First Data (2009)
Pauly, Thilo, Collaboration, For The ATLAS
The ATLAS detector is one of the experiments at the LHC that will detect high-energy proton collisions at 14 TeV. The commissioning of the detector has started already in 2005 in parallel to the...
Early Standard Model measurements with ATLAS (2009)
Ince, T., Collaboration, For The ATLAS
The measurement of Standard Model processes will be an important first step towards exploiting the discovery potential of the Large Hadron Collider, the highest energy accelerator ever built that...
Results from the commissioning of the ATLAS Pixel detector (2009)
Biesiada, J., Collaboration, For The ATLAS
The ATLAS Pixel detector is a high-resolution, low-noise silicon-based device designed to provide tracking and vertexing information within a distance of 12 cm from the LHC beam axis. It consists of...
Prospect for the Higgs searches with the ATLAS detector (2009)
Richter-Was, E., Collaboration, For The ATLAS
The investigation of the electroweak symmetry breaking is one of the primary tasks of the experiments at the CERN Large Hadron Collider (LHC). The potential of the ATLAS experiment for the discovery...
Elucidating Jet Energy Loss in Heavy Ion Collisions (2008)
Grau, N., Collaboration, For The ATLAS
Very soon the LHC will provide beams for heavy ion collisions at 5.52 TeV/nucleon. This center-of-mass energy results in a large cross-section for producing high-$E_T$ ($>$ 50 GeV) jets that are...
Hard Probes of the ATLAS Heavy Ion Physics Program (2008)
Jia, Jiangyong, Collaboration, For The ATLAS
We review the physics performance of the ATLAS detector for hard probes in heavy ion collisions, focusing on three topics: jet reconstruction, direct photon measurement, and heavy flavor jet tagging.
Top quark physics expectations at the LHC (2008)
Gaponenko, Andrei, Collaboration, For The ATLAS, Collaboration, For The CMS
The top quark will be produced copiously at the LHC. This will make both detailed physics studies and the use of top quark decays for detector calibration possible. This talk reviews plans and...
W/Z+jets as signal and background in ATLAS (2008)
Dobson, Ellie, Collaboration, For The ATLAS
Events containing W or Z bosons with accompanying jets are important channels to test the Standard Model. These proceedings discuss W/Z+Jets production cross section measurements and their use to...
Top quark properties at ATLAS (2008)
Jana, Dilip, Collaboration, For The ATLAS
The ATLAS potential for the study of the top quark properties and physics beyond the Standard Model in the top quark sector, is described. The measurements of the top quark charge, the spin and spin...
W and Z Boson Production at the ATLAS Experiment (2008)
Schott, M., Collaboration, For The ATLAS
The LHC experiments are close to collecting data and one of their first tasks is to test the electro-weak sector of the Standard Model. In this talk an overview of first physics measurements with...
Vector Boson Fusion Higgs to Tau Tau Searches at the ATLAS Experiment (2008)
Leney, K. J. C., Collaboration, For The ATLAS
The search for a Higgs boson produced via Vector Boson Fusion and subsequently decaying to two tau leptons is discussed. Significances for the di-lepton and lepton-hadron decay channels are...
ATLAS Detector Status and Physics Startup Plans (2008)
Bosman, Martine, Collaboration, For The ATLAS
The status of the ATLAS detector shortly before the start-up of the LHC is presented. The progress in the commissioning of the detector, as well as plans for early physics analysis are outlined.
Integration and commissioning of the ATLAS Muon spectrometer (2008)
Belloni, Alberto, Collaboration, For The ATLAS
The ATLAS experiment at the Large Hadron Collider (LHC) at CERN is currently waiting to record the first collision data in spring 2009. Its muon spectrometer is designed to achieve a momentum...
Early Discoveries of New Gauge Bosons W' and Z' in Leptonic Decay Channels at ATLAS (2008)
Thompson, E. N., Collaboration, For The ATLAS
We present the potential of the ATLAS detector to discover new massive gauge bosons in their leptonic decay channels: W' -> l nu_l and Z' -> l+ l-. Emphasis is placed on early data-taking at the LHC...
Early measurements using W/Z in ATLAS (2008)
Prieur, Damien, Collaboration, For The ATLAS
The LHC experiments are close to collecting collision data. An overview of first physics measurements of the W and Z production cross-sections is presented. The electron and muon decay channels are...
Reconstruction and Identification of Hadronic Tau Decays with ATLAS (2008)
Lai, Stan, Kaczmarska, Anna, Collaboration, For The ATLAS
The presence of tau leptons in the final state is an important signature in many Higgs boson and SUSY searches. With the ATLAS detector, hadronically decaying tau leptons can be reconstructed in a...
Data-driven Estimations of Z, W and Top Backgrounds (2008)
Hodgkinson, Mark, Collaboration, For The ATLAS
The Standard Model processes of W, Z and top quark production in association with jets constitute a major background to searches for Supersymmetry at the LHC. We describe recent work performed in the...
The ATLAS trigger menu for early data-taking (2008)
Kono, T., Collaboration, For The ATLAS
The ATLAS trigger system is based on three levels of event selection that select the physics of interest from an initial bunch-crossing rate of 40 MHz. During nominal LHC operations at a luminosity...
Parton Densities at the LHC (2008)
Tricoli, A., Collaboration, For The ATLAS
This contribution to the Italian "Workshop sui Monte Carlo, la Fisica e le Simulazioni a LHC", held at LNF, Frascati, in February, May and October 2006, summarises the status of parton density...
Top-Antitop cross section measurement in the di-lepton decay channel with ATLAS (2008)
Ta, Duc Bao, Collaboration, For The ATLAS
We present simulations of the production cross-section measurement of top-antitop pairs in the di-leptonic decay channel with the ATLAS detector. This study uses the Commissioning Service Challenge...
Heavy Ion Physics Prospects with the ATLAS Detector at the LHC (2008)
Grau, N., Collaboration, For The ATLAS
The next great energy frontier in Relativistic Heavy Ion Collisions is quickly approaching with the completion of the Large Hadron Collider and the ATLAS experiment is poised to make important...
Re-evaluation of the LHC potential for the measurement of Mw (2008)
Besson, N., Boonekamp, M., Klinkby, E., Petersen, T., Mehlhase, S., Collaboration, For The ATLAS
We present a study of the LHC sensitivity to the W boson mass based on simulation studies. We find that both experimental and phenomenological sources of systematic uncertainties can be strongly...
Discovery Potential for the SM Higgs Boson in the Inclusive Search Channels (2007)
Schmidt, Alexander, Collaboration, For The CMS, Collaboration, For The ATLAS
This paper gives an overview of the potential to discover a Standard Model Higgs Boson in the inclusive search channels at the ATLAS and CMS experiments at the LHC. The most important decay modes, $H...
SUSY Parameters Determination with ATLAS (2007)
Ozturk, N., Collaboration, For The ATLAS
The plan for mass and spin measurement of SUSY particles with the ATLAS detector is presented. The measurements of kinematical distributions, such as edges in the invariant mass of leptons and jets,...
Strategy for early SUSY searches at ATLAS (2007)
Yamamoto, Shimpei, Collaboration, For The ATLAS
The CERN Large Hadron Collider (LHC) is scheduled to commence operation in 2008 and inclusive searches for supersymmetry (SUSY) will be one of our primary tasks in the first days of LHC operation. It...
Heavy Ion Physics at the LHC with the ATLAS Detector (2007)
Steinberg, P., Collaboration, For The ATLAS
The ATLAS detector at CERN will provide a high-resolution longitudinally-segmented calorimeter and precision tracking for the upcoming study of heavy ion collisions at the LHC (sqrt(s_NN)=5520 GeV)....
Structure Function Measurements at the LHC (2005)
Tricoli, A., Collaboration, For The ATLAS
Since the current uncertainty on the structure of the proton affects the new physics discovery potential of LHC, the ATLAS collaboration is investigating methods to constrain this uncertainty over...
QCD studies with ATLAS at the LHC (2004)
Mitsou, Vasiliki A., Collaboration, For The ATLAS
The study of QCD processes at the LHC will serve two main goals. First, the predictions of Quantum Chromodynamics will be tested and precision measurements will be performed, allowing additional...
Little Higgs searches at LHC (2004)
Garcia, J. E., Collaboration, For The ATLAS
A new method of solving the hierarchy problem in the SM has been proposed. This method leads to the so-called "Little Higgs" models. The ATLAS experiment at LHC has undertaken studies of the new...
Energy-Calibration of the ATLAS Hadronic and Electromagnetic Liquid-Argon Endcap Calorimeters (2003)
Menke, Sven, Collaboration, For The ATLAS
In 2002 the first combined beam test of the hadronic and electromagnetic liquid-argon endcap calorimeters of the ATLAS experiment took place at the SPS test beam at CERN. A total of 15 million events...
Search for Extra Dimensions at LHC (2003)
Vacavant, Laurent, Collaboration, For The ATLAS, Collaboration, The CMS
Some of the studies performed by the ATLAS and CMS collaborations to establish the future sensitivity of the experiments to extra dimension signals are reviewed. The discrimination of those signals...