Scientific Commons: J. T. M. Baines

Implementation and performance of a tau lepton selection within the ATLAS trigger system at the LHC (2006)

Casado, M P, Dos Anjos, A, Armstrong, S, Baines, J T M, Bee, C P, Biglietti, M, ...

The ATLAS experiment at the Large Hadron Collider (LHC) has an interaction rate of up to $10^9$ Hz. The trigger must efficiently select interesting events while rejecting the large amount of...

A Fast Tracking Algorithm for the ATLAS Level 2 Trigger (2006)

Konstantinidis, N P, Sutton, M, Baines, J T M, Emeliyanov, D, Parodi, F, Schiavi, C, ...

A set of conceptually simple and robust algorithms for fast pattern recognition and track reconstruction using 3D space points developed for the ATLAS Level 2 (LVL2) Trigger at the LHC is presented....

Testing on a Large Scale (2006)

Burckhart-Chromek, Doris, Abolins, M, Adragna, P, Albuquerque-Portes, M, Alexandrov, L, Amorim, A, ...

The ATLAS Data Acquisition (DAQ) and High Level Trigger (HLT) software system will be comprised initially of 2000 PC nodes which take part in the control, event readout, second level trigger and...

Testing on a Large Scale: Running the ATLAS Data Acquisition and High Level Trigger Software on 700 PC Nodes (2006)

Burckhart-Chromek, Doris, Abolins, M, Adragna, P, Alexandrov, L, Amorim, A, Armstrong, S, ...

The ATLAS Data Acquisition (DAQ) and High Level Trigger (HLT) software system will be comprised initially of 2000 PC nodes which take part in the control, event readout, second level trigger and...

Precision Electroweak Measurements on the Z Resonance (2006)

Schael, S, Abbiendi, G, Ainsley, C, Åkesson, P F, Alexander, G, Allison, J, ...

We report on the final electroweak measurements performed with data taken at the Z resonance by the experiments operating at the electron-positron colliders SLC and LEP. The data consist of 17...

Overview of the High-Level Trigger Electron and Photon Selection for the ATLAS Experiment at the LHC (2005)

Goncalo, R, Armstrong, S, Baines, J T M, Casado, M P, Clark, A, Conde-Muíño, P, ...

The ATLAS experiment is one of two general purpose experiments to start running at the Large Hadron Collider in 2007. The short bunch crossing period of 25ns and the large background of...

Implementation and Performance of the Seeded Reconstruction for the ATLAS Event Filter Selection Software (2005)

Santamarina-Rios, C, Conde-Muíño, P, Dos Anjos, A, Armstrong, S, Baines, J T M, Bee, C P, ...

ATLAS is one of the four LHC experiments that will start data taking in 2007, designed to cover a wide range of physics topics. The ATLAS trigger system has to cope with a rate of 40 MHz and 23...

Overview of the High-Level Trigger Electron and Photon Selection for the ATLAS Experiment at the LHC (2005)

Gesualdi-Mello, A, Anjos, A, Armstrong, S, Baines, J T M, Bee, C P, Biglietti, M, ...

The ATLAS experiment at the Large Hadron Collider (LHC) will face the challenge of efficiently selecting interesting candidate events in pp collisions at 14 TeV center-of-mass energy, whilst...

Implementation and Performance of the High Level Trigger Electron and Photon Selection for the ATLAS Experiment at the LHC (2005)

Schiavi, C, Armstrong, S, Dos Anjos, A, Baines, J T M, Bee, C P, Biglietti, M, ...

The ATLAS experiment at the Large Hadron Collider (LHC) will face the challenge of efficiently selecting interesting candidate events in pp collisions at 14 TeV center of mass energy, while rejecting...

Neutral heavy lepton analysis (2005)

Akrawy, M Z, Alexander, Gideon, Allison, J, Allport, P P, Anderson, K J, Armitage, J C, ...

A Level-2 trigger algorithm for the identification of muons in the ATLAS Muon Spectrometer (2005)

Di Mattia, A, Armstrong, S, Dos Anjos, A, Baines, J T M, Bee, C P, Biglietti, M, ...

The ATLAS Level-2 trigger provides a software-based event selection after the initial Level-1 hardware trigger. For the muon events, the selection is decomposed in a number of broad steps: first, the...

Portable Gathering System for Monitoring and Online Calibration at ATLAS (2004)

Conde-Muíño, P, Armstrong, S, Dos Anjos, A, Baines, J T M, Bee, C P, Biglietti, M, ...

During the runtime of any experiment, a central monitoring system that detects problems as soon as they appear has an essential role. In a large experiment, like ATLAS, the online data acquisition...

A Step Towards A Computing Grid For The LHC Experiments: ATLAS Data Challenge 1 (2004)

Sturrock, R, Bischof, R, Epp, B, Ghete, V M, Kuhn, D, Mello, A G, ...

The ATLAS Collaboration at CERN is preparing for the data taking and analysis at the LHC that will start in 2007. Therefore, a series of Data Challenges was started in 2002 whose goals are the...

Implementation and performance of the event filter muon selection for the ATLAS experiment at LHC (2004)

Ventura, A., Armstrong, S., Assamagan, A., Baines, J.T.M., Bee, C.P., Bellomo, M., ...

The ATLAS trigger system is composed of three levels: an initial hardware trigger level (LVL1) followed by two software-based stages (LVL2 trigger and event filter) included in the high level trigger...

Implementation and performance of the high level trigger electron and photon selection for the ATLAS experiment at the LHC (2004)

Armstrong, S., Anjos, A.D., Baines, J.T.M., Bee, C.P., Biglietti, M., Bogaerts, J.A., ...

The ATLAS experiment at the Large Hadron Collider (LHC) will face the challenge of efficiently selecting interesting candidate events in pp collisions at 14 TeV center of mass energy, while rejecting...

Implementation and performance of the high level trigger electron and photon selection for the ATLAS experiment at the LHC (2004)

Armstrong, S., Anjos, A.D., Baines, J.T.M., Bee, C.P., Biglietti, M., Bogaerts, J.A., ...

The ATLAS experiment at the Large Hadron Collider (LHC) will face the challenge of efficiently selecting interesting candidate events in pp collisions at 14 TeV center of mass energy, while rejecting...

Implementation and performance of the event filter muon selection for the ATLAS experiment at LHC (2004)

Ventura, A., Armstrong, S., Assamagan, A., Baines, J.T.M., Bee, C.P., Bellomo, M., ...

The ATLAS trigger system is composed of three levels: an initial hardware trigger level (LVL1) followed by two software-based stages (LVL2 trigger and event filter) included in the high level trigger...

Implementation and performance of the high level trigger electron and photon selection for the ATLAS experiment at the LHC (2004)

Armstrong, S., Anjos, A.D., Baines, J.T.M., Bee, C.P., Biglietti, M., Bogaerts, J.A., ...

The ATLAS experiment at the Large Hadron Collider (LHC) will face the challenge of efficiently selecting interesting candidate events in pp collisions at 14 TeV center of mass energy, while rejecting...

Implementation and performance of the event filter muon selection for the ATLAS experiment at LHC (2004)

Ventura, A., Armstrong, S., Assamagan, A., Baines, J.T.M., Bee, C.P., Bellomo, M., ...

The ATLAS trigger system is composed of three levels: an initial hardware trigger level (LVL1) followed by two software-based stages (LVL2 trigger and event filter) included in the high level trigger...

An Overview of the ATLAS High Level Trigger Dataflow and Supervision (2003)

Wheeler, S, Armstrong, S, Baines, J T M, Bee, C P, Biglietti, M, Bogaerts, A, ...

The ATLAS High Level Trigger (HLT) system provides software-based event selection after the initial LVL1 hardware trigger. It is composed of two stages, the LVL2 trigger and the Event Filter (EF)....

An Overview of Algorithms for the ATLAS High Level Trigger (2003)

Armstrong, S, Baines, J T M, Bee, C P, Biglietti, M, Bogaerts, A, Boisvert, V, ...

Following rigorous software design and analysis methods, an object-based architecture has been developed to derive the second- and third-level trigger decisions for the future ATLAS detector at the...

Studies for a common selection software environment in ATLAS: from the Level-2 Trigger to the offline reconstruction (2003)

Wiedenmann, W, Armstrong, S R, Baines, J T M, Bee, C P, Biglietti, M, Bogaerts, A, ...

The Atlas High Level Trigger's primary function of event selection will be accomplished with a Level-2 trigger farm and an Event Filter farm, both running software components developed in the Atlas...

A New Implementation of the Region of Interest Strategy for the ATLAS Second Level Trigger (2003)

Boisvert, V, Armstrong, S R, Baines, J T M, Brandt, S, Elsing, M, George, S, ...

Among the many challenges presented by the future ATLAS detector at the LHC are the high data taking rate and volume and the derivation of a rapid trigger decision with limited resources. To address...

Architecture of the ATLAS High Level Trigger Event Selection Software (2003)

Grothe, M, Armstrong, S, Baines, J T M, Bee, C P, Biglietti, M, Bogaerts, A, ...

The ATLAS High Level Trigger (HLT) consists of two selection steps: the second level trigger and the event filter. Both will be implemented in software, running on mostly commodity hardware. Both...

The Algorithm Steering and Trigger Decision mechanism of the ATLAS High Level Trigger (2003)

Comune, G, Armstrong, S, Baines, J T M, Bee, C P, Biglietti, M, Bogaerts, A, ...

Given the extremely high output rate foreseen at LHC and the general-purpose nature of ATLAS experiment, an efficient and flexible way to select events in the High Level Trigger is needed. An...

Supervision of the ATLAS High Level Trigger System (2003)

Wheeler, S, Armstrong, S, Baines, J T M, Bee, C P, Biglietti, M, Bogaerts, A, ...

The ATLAS High Level Trigger (HLT) system provides software-based event selection after the initial LVL1 hardware trigger. It is composed of two stages, the LVL2 trigger and the Event Filter. The HLT...

Trigger/EF/DAQ/DCS session Physics and event selection algorithms/J.Baines. LVL1 trigger/U.Pfeiffer. LVL2 pilot project/D.Calvet. DAQ/EF '-1' project/G.Mornarchi. (2002)

Baines, J T M, Bee, C P, Burckhart, H J, Calvet, D, Mornacchi, Giuseppe, Pfeiffer, U, ...

B decays (2000)

Ball, P, Fleischer, Robert, Tartarelli, F, Vikas, P, Wilkinson, G R, Baines, J T M, ...

We review the prospects for B decay studies at the LHC. Contributing authors: J. Baines, S.P. Baranov, P. Bartalini, M. Beneke, E. Bouhova, G. Buchalla, I. Caprini, F. Charles, J. Charles, Y. Coadou,...

Bottom Production (2000)

Nason, P, Ridolfi, G, Schneider, O, Tartarelli, F, Vikas, P, Baines, J T M, ...

We review the prospects for bottom production physics at the LHC. Members of the working group who has contributed to this document are: J. Baines, S.P. Baranov, P. Bartalini, A. Bay, E. Bouhova, M....

The OPAL muon barrel detector (1994)

Akers, R J, Allison, J, Ashton, P, Bahan, G A, Baines, J T M, Banks, J N, ...

Measurement of the $\tau$ lifetime (1994)

Acton, P D, Alexander, Gideon, Allison, J, Allport, P P, Anderson, K J, Arcelli, S, ...

Studies of charged particle multiplicity in b quark events (1993)

Akers, R J, Alexander, Gideon, Allison, J, Anderson, K J, Arcelli, S, Astbury, Alan, ...

Measurement of the photon structure function F$_{2}^{\gamma}$ in the reaction e+e- --> e+e- + hadrons at LEP (1993)

Akers, R J, Alexander, Gideon, Allison, J, Anderson, K J, Arcelli, S, Astbury, Alan, ...

Measurement of $\Gamma (Z^{0} \to b\overline{b}) / \Gamma (Z^{0} \to$ Hadrons using Impact Parameters and Leptons (1993)

Akers, R J, Alexander, Gideon, Allison, J, Anderson, K J, Arcelli, S, Astbury, Alan, ...

A Measurement of the Forward-Backward Asymmetry of $e^{+}e^{-} \to c\overline{c}$ and $e^{+}e^{-} \to b\overline{b}$ at Centre-of-Mass Energies on and near the $Z^{0}$ Peak using $D*^{\pm}$ Mesons (1993)

Akers, R J, Alexander, Gideon, Allison, J, Anderson, K J, Arcelli, S, Astbury, Alan, ...