Diffractive Deep-Inelastic Scattering (2007)
New results on diffractive deep-inelastic ep scattering at HERA are presented using data taken in 1994 with the H1 detector. The cross section for diffractive deep-inelastic scattering is measured in...
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...
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...
Photon Physics in Heavy Ion Collisions at the LHC (2005)
Aurenche, Patrick, Kodolova, Olga, Lévai, Peter, Lokhtin, Igor P, Peitzmann, Thomas, Redlich, Krzysztof, ...
Various photon production mechanisms in high-energy nuclear collisions at the LHC are discussed and compared. The prospect of using electromagnetic probes to characterize quark-gluon plasma formation...
Photon Physics in Heavy Ion Collisions at the LHC (2005)
Aurenche, Patrick, Kodolova, Olga, Lévai, Peter, Lokhtin, Igor P, Peitzmann, Thomas, Redlich, Krzysztof, ...
Various photon production mechanisms in high-energy nuclear collisions at the LHC are discussed and compared. The prospect of using electromagnetic probes to characterize quark-gluon plasma formation...
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...
The LHC machine-experiment interface (2004)
Tapprogge, Stefan, Assmann, Ralph Wolfgang, Tsesmelis, Emmanuel, Macina, Daniela, Mornacchi, Giuseppe
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...
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...
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...
Hard probes in heavy ion collisions at the LHC: heavy flavour physics (2003)
Bedjidian, Marc, Blaschke, D, Bodwin, G T, Carrer, N, Cole, B, Crochet, Philippe, ...
We present the results from the heavy quarks and quarkonia working group. This report gives benchmark heavy quark and quarkonium cross sections for $pp$ and $pA$ collisions at the LHC against which...
Hard Probes in Heavy Ion Collisions at the LHC: Jet Physics (2003)
Accardi, A, Arleo, F, Armesto-Pérez, Nestor, Baier, R, D'Enterria, D G, Fries, R J, ...
We discuss the importance of high-pT hadron and jet measurements in nucleus-nucleus collisions at the CERN Large Hadron Collider.
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...
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...
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...
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...
The LHC machine-experiment interface (2002)
Tapprogge, Stefan, Tsesmelis, Emmanuel, Brüning, Oliver Simon
This series of three lectures will provide an overview of issues arising at the interface between the LHC machine and the experiments, which are required for guiding the interaction between the...
Impact of Energy and Luminosity upgrades at LHC on the Physics program of ATLAS (2002)
Azuelos, Georges, Benchekroun, D, Cakir, O, Elfgren, E, Gianotti, F, Hansen, J B, ...
The impact on the physics capabilities of the ATLAS detector of possible LHC upgrades is discussed. As a benchmark, an increase in the luminosity by a factor of ten is considered. For comparison, a...
Impact of Energy and Luminosity upgrades at LHC on the Physics program of ATLAS (2002)
Azuelos, Georges, Benchekroun, D, Cakir, O, Elfgren, E, Gianotti, F, Hansen, J B, ...
The impact on the physics capabilities of the ATLAS detector of possible LHC upgrades is discussed. As a benchmark, an increase in the luminosity by a factor of ten is considered. For comparison, a...
1st Workshop on Forward Physics and Luminosity Determination at LHC (2001)
Huitu, Katri, Khoze, Valery, Orava, Risto, Tapprogge, Stefan
Experimental aspects of QCD studies at the LHC (2000)
The LHC will allow precision tests and measurements of QCD in as yet unexplored kinematic regions. The detailed understanding of QCD is important for almost all physics processes to be studied at...
Catani, S, Dittmar, Michael, Soper, Davison Eugene, Stirling, William James, Tapprogge, Stefan, Alekhin, S I, ...
We discuss issues of QCD at the LHC including parton distributions, Monte Carlo event generators, the available next-to-leading order calculations, resummation, photon production, small x physics,...
Schaffer, R D, Caprini, M, Ellis, Nick, Gee, N, Robins, S A, Tapprogge, Stefan
-ATLAS object oriented software and database -Overview of LVL1,CTP and TTC -LVL1 calorimeter -LVL1 Muon spectrometer -LVL2 pilot project -DAQ/event filter -1 and DCS -
The Performance of the ATLAS Trigger (2000)
This paper describes the expected performance of the ATLAS trigger system, which has to reduce the interaction rate in $pp$ collisions at $sqrt{s} = 14$~TeV of $10^9$~Hz (at design luminosity) to...
Low mass dilepton production at the SPS: probing hot and dense nuclear matter (1996)
Agakichiev, G, Baur, R, Breskin, Amos, Chechik, R, Drees, A, ...
CERES and HELIOS-3 have detected a significant enhancement of low--mass dileptons in nuclear collisions at 200 GeV/nucleon with respect to the expected ``conventional'' sources. The onset of the...
Diffraktive Phänomene in der Elektron-Proton-Streuung bei HERA / (1996)
Zugl.: Heidelberg, Univ., Diss., 1996.
New results from NA45/CERES (1995)
Agakichiev, G, Baur, R, Breskin, Amos, Ceretto, F, Chechik, R, Drees, A, ...
Search for direct photons from S-Au collisions at 200 GeV/u (1995)
Baur, R, Breskin, Amos, Chechik, R, Drees, A, Jacob, C, Faschingbauer, U, ...
New results from NA45/CERES (1995)
Wurm, P, Agakichiev, G, Baur, R, Breskin, Amos, Ceretto, F, Chechik, R, ...
Enhanced production of low-mass electron pairs in 200 GeV/u S-Au collisions at the CERN-SPS (1995)
Agakichiev, G, Baur, R, Breskin, Amos, Chechik, R, Drees, A, Jacob, C, ...
First measurement of the deep-inelastic structure of proton diffraction (1995)
Ahmed, T, Ley, C, Lindner, A, Lindström, G, Link, J, Linsel, F, ...
A measurement is presented, using data taken with the H1 detector at HERA, of the contribution of diffractive interactions to deep-inelastic electron-proton scattering. The diffractive contribution...
Experimental study of hard photon radiation processes at HERA (1995)
Ahmed, T, Andreev, V, Andrieu, B, Appuhn, R D, Arpagaus, M, Aïd, S, ...
Observation of an e$^{+}$p --> $\mu^{+}$X event with high transverse momenta at HERA (1995)
Ahmed, T, Andreev, V, Andrieu, B, Appuhn, R D, Arpagaus, M, Aïd, S, ...
Determination of the strong coupling constant from jet rates in deep inelastic scattering (1994)
Ahmed, T, Andreev, V, Andrieu, B, Appuhn, R D, Arpagaus, M, Aïd, S, ...
Observation of hard processes in rapidity gap events in $\gamma$p interactions at HERA (1994)
Ahmed, T, Andreev, V, Andrieu, B, Appuhn, R D, Arpagaus, M, Aïd, S, ...
A search for leptoquarks and squarks at HERA (1994)
Ahmed, T, Andreev, V, Andrieu, B, Appuhn, R D, Arpagaus, M, Aïd, S, ...
A search for heavy leptons at HERA (1994)
Ahmed, T, Andreev, V, Andrieu, B, Appuhn, R D, Arpagaus, M, Aïd, S, ...
Photoproduction of $J/\psi$ Mesons at HERA (1994)
Ahmed, T, Andreev, V, Andrieu, B, Appuhn, R D, Arpagaus, M, Aïd, S, ...
Deep inelastic scattering events with a large rapidity gap at HERA (1994)
Ahmed, T, Andreev, V, Andrieu, B, Appuhn, R D, Arpagaus, M, Aïd, S, ...
Measurement of electromagnetically produced $e^+ e^-$ pairs in distant S-Pt collisions (1994)
Baur, R, Breskin, Amos, Chechik, R, Drees, A, Faschingbauer, U, Fischer, P, ...