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Ricardo
30 items
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1.
Fast Tracking for the Second Level Trigger of the ATLAS Experiment Using Silicon Detectors Data / Schiavi, C ; Cervetto, M ; Parodi, F ; Kostantinidis, N ; Sutton, M ; Baines, J T M ; Emeliyanov, D ; Drevermann, H
Online track reconstruction is an important ingredient for event selection at Large Hadron Collider (LHC) experiments. [...]
ATL-DAQ-CONF-2005-011 ; ATL-COM-DAQ-2005-011. - 2005.
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2.
Prediction for Minimum Bias and the Underlying Event at LHC Energies 010 / Moraes, A ; Buttar, C ; Dawson, I
In this report we investigate the models employed by PYTHIA and PHOJET Monte Carlo event generators used to describe soft interactions in hadron-hadron collisions. [...]
ATL-PHYS-PUB-2005-007 ; ATL-COM-PHYS-2005-010. - 2005. - 46 p.
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3.
Design, deployment and functional tests of the on-line Event Filter for the ATLAS experiment at LHC / Negri, A ; Armstrong, S ; Dos Anjos, A ; Baines, J T M ; Bee, C P ; Biglietti, M ; Bogaerts, J A C (CERN) ; Boisvert, V ; Bosman, M ; Caron, B et al.
The Event Filter selection stage is a fundamental component of the ATLAS Trigger and Data Acquisition architecture. [...]
ATL-DAQ-CONF-2005-004 ; ATL-COM-DAQ-2005-008 ; CERN-ATL-DAQ-CONF-2005-004. - 2005. - 5 p.
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4.
Search for the standard model $H \to ZZ^{*} \to 4\mu$ with full ATLAS detector simulation / Hassani, S (Saclay)
The discovery potential of the ATLAS detector for the Standard Model Higgs decay to the four muon final state is investigated. [...]
ATL-COM-PHYS-2005-014. - 2005. - 10 p.
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5.
Invisible Higgs boson decays in the ZH and WH channels / Gagnon, P (Indiana U.)
This note provides details on the analysis developed to select invisible Higgs decays in the ZH and WH channels. [...]
ATL-PHYS-PUB-2005-011 ; ATL-COM-PHYS-2003-011. - 2003. - 10 p.
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6.
Optimisation of the size of the EmTau Region of Interest for the ATLAS Level-2 Trigger using the Electromagnetic Calorimeter / Konstantinidis, N P ; Stefanidis, S ; Sutton, M R
A study for optimizing the size of the EmTau Region of Interest (RoI) using the pointing information from the Electromagnetic Calorimeter is presented. [...]
ATL-DAQ-PUB-2005-002 ; ATL-COM-DAQ-2005-038 ; CERN-ATL-COM-DAQ-2005-038. - 2005 - 15.
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7.
Configuration of the ATLAS Trigger / Spiwoks, Ralf (CERN) ; Dos Anjos, A (Wisconsin U., Madison) ; Ellis, Nick (CERN) ; Haller, J (CERN) ; Iqbal, N (Cornell U.) ; Landon, M (Queen Mary, U. of London) ; Wengler, T (CERN) ; Wiedenmann, W (Wisconsin U., Madison) ; Zobernig, H (Wisconsin U., Madison)
The ATLAS detector at CERN's LHC will be exposed to proton-proton collisions at a rate of 40 MHz. [...]
ATL-DAQ-CONF-2005-031 ; ATL-COM-DAQ-2005-034 ; CERN-ATL-DAQ-CONF-2005-031. - CERN, 2005.
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8.
ATLAS Level-1 Trigger Timing-In Strategies / Pauly, Thilo (CERN) ; Borrego-Amaral, P (CERN) ; Ask, S (CERN) ; Ellis, Nick (CERN) ; Farthouat, P (CERN) ; Gällnö, P (CERN) ; Haller, J (CERN) ; Krasznahorkay, A (CERN ; Debrecen U.) ; Maeno, T (CERN) ; Pessoa-Lima, H (Rio de Janeiro Federal U. ; Rio de Janeiro, CBPF) et al.
The ATLAS detector at CERN's LHC will be exposed to proton-proton collisions at a bunch-crossing rate of 40 MHz. [...]
ATL-DAQ-CONF-2005-035 ; ATL-COM-DAQ-2005-036 ; CERN-ATL-DAQ-CONF-2005-035. - CERN, 2005.
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9.
Implementation and Performance of the Seeded Reconstruction for the ATLAS Event Filter Selection Software / Santamarina-Rios, C ; Conde-Muíño, P ; Dos Anjos, A ; Armstrong, S ; Baines, J T M ; Bee, C P ; Biglietti, M ; Bogaerts, J A C (CERN) ; Bosman, M ; Caron, B et al.
ATLAS is one of the four LHC experiments that will start data taking in 2007, designed to cover a wide range of physics topics. [...]
ATL-DAQ-CONF-2005-032 ; ATL-COM-DAQ-2005-026 ; CERN-ATL-DAQ-CONF-2005-032. - 2007. - 5 p.
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10.
Development and Tests of the Event Filter for the ATLAS Experiment / Bosman, M ; Meessen, C ; Negri, A ; Segura, E ; Sushkov, S ; Touchard, F ; Wheeler, S J
The Trigger and Data Acquisition (TDAQ) System of the ATLAS Experiment comprises three stages of event selection. [...]
ATL-DAQ-CONF-2005-027 ; ATL-COM-DAQ-2005-025 ; CERN-ATL-DAQ-CONF-2005-027. - 2005. - 6 p.
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11.
Deployment of the ATLAS High-Level Triggers / Anjos, A (CERN) ; Armstrong, S ; Baines, J T M ; Beck, H P ; Bee, C P ; Biglietti, M ; Bogaerts, J A C (CERN) ; Bosman, M ; Burckhart, Doris ; Caprini, M et al.
The ATLAS combined test beam in the second half of 2004 saw the first deployment of the ATLAS High-Level Triggers (HLT). [...]
ATL-DAQ-CONF-2005-033 ; ATL-COM-DAQ-2005-023 ; CERN-ATL-DAQ-CONF-2005-033. - 2005. - 5 p.
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12.
Deployment and use of the ATLAS DAQ in the Combined Test Beam / Gadomski, S ; Abolins, M ; Alexandrov, I ; Amorim, A ; Padilla-Aranda, A ; Badescu, E ; Barros, N ; Beck, H P ; Blair, R ; Burckhart-Chromek, Doris et al.
The ATLAS collaboration at CERN operated a Combined Test Beam (CTB) from May until November 2004. [...]
ATL-DAQ-CONF-2005-019 ; ATL-COM-DAQ-2005-014. - 2006. - 5 p.
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13.
Muon Identification with the Event Filter of the ATLAS Experiment at CERN LHC's / Dos Anjos, A ; Armstrong, S ; Baines, J T M ; Bee, C P ; Biglietti, M ; Bogaerts, J A C (CERN) ; Bosman, M ; Carlino, G ; Caron, B ; Casado, M P et al.
The Large Hadron Collider at CERN offers unprecedented challenges to the design and construction of detectors and trigger/data acquisition systems. [...]
ATL-DAQ-CONF-2005-018 ; ATL-COM-DAQ-2005-013. - 2005. - 5 p.
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14.
Implementation and Performance of the High Level Trigger Electron and Photon Selection for the ATLAS Experiment at the LHC / Schiavi, C ; Armstrong, S ; Dos Anjos, A ; Baines, J T M ; Bee, C P ; Biglietti, M ; Bogaerts, J A C (CERN) ; Boisvert, V ; Bosman, M ; Caron, B et al.
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 the enormous number of background events, stemming from an interaction rate of up to 10^9 Hz. [...]
ATL-DAQ-CONF-2005-014 ; ATL-COM-DAQ-2005-012 ; CERN-ATL-DAQ-CONF-2005-014. - CERN, 2005.
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15.
Beam Test of the ATLAS Level-1 Calorimeter Trigger System / Garvey, J ; Hillier, S J ; Mahout, G ; Moye, T H ; Staley, R J ; Thomas, J P ; Typaldos, D ; Watkins, P M ; Watson, A ; Achenbach, R et al.
The Level-1 Calorimter Trigger consists of a Preprocessor (PP), a Cluster Processor (CP), and a Jet/Energy-sum Processor (JEP). [...]
ATL-DAQ-CONF-2005-006 ; ATL-COM-DAQ-2005-010 ; CERN-ATL-DAQ-CONF-2005-006. - 2005. - 4 p.
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16.
Muon Event Filter Software for the ATLAS Experiment at LHC / Biglietti, M ; Armstrong, S ; Assamagan, Ketevi A ; Baines, J T M ; Bee, C P ; Bellomo, M ; Bogaerts, J A C (CERN) ; Boisvert, V ; Bosman, M ; Caron, B et al.
At LHC the 40 MHz bunch crossing rate dictates a high selectivity of the ATLAS Trigger system, which has to keep the full physics potential of the experiment in spite of a limited storage capability. The level-1 trigger, implemented in a custom hardware, will reduce the initial rate to 75 kHz and is followed by the software based level-2 and Event Filter, usually referred as High Level Triggers (HLT), which further reduce the rate to about 100 Hz. [...]
ATL-DAQ-CONF-2005-008; ATL-COM-DAQ-2005-005.- Geneva : CERN, 2005 Access to fulltext: daq-conf-2005-008 - PDF; trigmoorechep04 - PPT; Published version from CERN: PDF;
In : Computing in High Energy Physics and Nuclear Physics 2004, Interlaken, Switzerland, 27 Sep - 1 Oct 2004, pp.334 (CERN-2005-002)
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17.
Implementation and Performance of the Event Filter Muon Selection for the ATLAS experiment at LHC / Ventura, A ; Armstrong, S ; Assamagan, Ketevi A ; Baines, J T M ; Bee, C P ; Bellomo, M ; Biglietti, M ; Bogaerts, J A C (CERN) ; Boisvert, V ; Bosman, M et al.
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 (HLT) and implemented on processor farms. [...]
ATL-DAQ-CONF-2005-015 ; ATL-COM-DAQ-2005-002. - 2005. - 5 p.
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18.
Fast Tracking for the ATLAS LVL2 Trigger / Baines, J T M (RAL, Diamond) ; Drevermann, H (CERN) ; Emeliyanov, D (RAL, Diamond) ; Konstantinidis, N P (University Coll. London) ; Parodi, F (INFN, Genoa) ; Schiavi, C (INFN, Genoa) ; Sutton, M (University Coll. London)
We present a set of algorithms for fast track reconstruction at the second level (LVL2) trigger of ATLAS, using three-dimensional space points (= hits) from the silicon trackers. The strategy is to determine the position z_0 of the interesting pp interaction along the beam axis prior to any track reconstruction and then retain only groups of hits which point back to that z_0 and perform combinatorial tracking only inside those groups. [...]
ATL-DAQ-CONF-2005-001; ATL-COM-DAQ-2004-028.- Geneva : CERN, 2005 Access to fulltext: chep04 - PPT; daq-conf-2005-001 - PDF; perf - EPS; fig1 - EPS; Published version from CERN: PDF;
In : Computing in High Energy Physics and Nuclear Physics 2004, Interlaken, Switzerland, 27 Sep - 1 Oct 2004, pp.246 (CERN-2005-002)
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19.
Portable Gathering System for Monitoring and Online Calibration at ATLAS / Conde-Muíño, P ; Armstrong, S ; Dos Anjos, A ; Baines, J T M ; Bee, C P ; Biglietti, M ; Bogaerts, J A C (CERN) ; Boisvert, V ; Bosman, M ; Caron, B et al.
During the runtime of any experiment, a central monitoring system that detects problems as soon as they appear has an essential role. [...]
ATL-DAQ-2004-014 ; CERN-ATL-DAQ-2004-014 ; ATL-COM-DAQ-2004-020 ; CERN-ATL-COM-DAQ-2004-020. - CERN, 2005. - 4 p.
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20.
Prediction for minimum bias and the underlying event at LHC energies / Moraes, A ; Buttar, C ; Dawson, I
In this report we investigate the models employed by PYTHIA and PHOJET Monte Carlo event generators used to describe soft interactions in hadron-hadron collisions. The prime aim of this study is to predict minimum bias and underlying event levels of particle production and event activity for the LHC as accurately as these models allow us, thus providing a good description of the event environment in simulations. [...]
SN-ATLAS-2006-057.- Geneva : CERN, 2007 - 35 p. - Published in : Eur. Phys. J. C 50 (2007) 435-466 Access to fulltext document: PDF;
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21.
Performance of the Second Level Trigger Electron Selection Algorithms with the 2004 ATLAS Combined Test Beam Data / Díaz-Gómez, M ; Padilla, C ; Riu, I ; Peres-Realez, V
During 2004, ATLAS performed a combined test beam where pieces of all the detectors with final or almost final readout electronics took data in common using a prototype of the complete trigger and data acquisition system. The setup resembled a wedge of the final ATLAS detector. [...]
ATL-DAQ-INT-2005-002; ATL-COM-DAQ-2005-040; CERN-ATL-COM-DAQ-2005-040.- Geneva : CERN, 2005 - 17 p. Access to fulltext: PDF;
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22.
Overview of the High-Level Trigger Electron and Photon Selection for the ATLAS Experiment at the LHC / Goncalo, R (Royal Holloway, U. of London) ; Armstrong, S (Brookhaven) ; Baines, J T M (Rutherford) ; Casado, M P (Barcelona, IFAE) ; Clark, A (Geneva U.) ; Conde-Muíño, P (CERN) ; Damazio, D (Brookhaven) ; De Santo, A (Royal Holloway, U. of London) ; Díaz-Gómez, M (Geneva U.) ; Emeliyanov, D (Rutherford) et al.
The ATLAS experiment is one of two general purpose experiments to start running at the Large Hadron Collider in 2007. [...]
ATL-DAQ-CONF-2005-036 ; ATL-COM-DAQ-2005-042 ; CERN-ATL-DAQ-CONF-2005-036. - 2005. - 6 p.
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23.
Prospects for observing an invisibly decaying Higgs boson in the t anti-t H production at LHC / Kersevan, Borut P ; Malawski, M ; Richter-Was, Elzbieta
The prospects for observing an invisibly decaying Higgs boson in the t anti-t H production at LHC are discussed. [...]
ATL-PHYS-2003-028. - 2003. - 13 p.
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24.
An NLO QCD analysis of inclusive cross-section and jet-production data from the ZEUS experiment / ZEUS Collaboration
The ZEUS inclusive differential cross-section data from HERA, for charged and neutral current processes taken with e+ and e- beams, together with differential cross-section data on inclusive jet production in e+ p scattering and dijet production in \gamma p scattering, have been used in a new NLO QCD analysis to extract the parton distribution functions of the proton. The input of jet data constrains the gluon and allows an accurate extraction of \alpha_s(M_Z) at NLO; \alpha_s(M_Z) = 0.1183 \pm 0.0028(exp.) \pm 0.0008(model) An additional uncertainty from the choice of scales is estimated as \pm 0.005. [...]
hep-ph/0503274; DESY-05-050; DESY-2005-050.- Hamburg : DESY, 2005 - 37 p. - Published in : Eur. Phys. J. C 42 (2005) 1-16 Access to fulltext document: PDF; External link: hep-ph/0503274 PDF
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25.
Measurement of dijet cross sections for events with a leading neutron in photoproduction at HERA / ZEUS Collaboration
Differential cross sections for dijet photoproduction in association with a leading neutron using the reaction e^+ + p --> e^+ + n + jet + jet + X_r have been measured with the ZEUS detector at HERA using an integrated luminosity of 6.4 pb^{-1}. [...]
hep-ex/0010019 ; DESY-2000-142 ; DESY-00-142. - 2000. - 28 p.
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26.
Measurement of the Proton Structure Function $F_{2}$ at Very Low $Q^{2}$ at HERA / ZEUS Collaboration
A measurement of the proton structure function F_2(x,Q^2) is presented in the kinematic range 0.045 GeV^2 < Q^2 < 0.65 GeV^2 and 6*10^{-7} < x < 1*10^{-3}. The results were obtained using a data sample corresponding to an integrated luminosity of 3.9pb^-1 in e^+p reactions recorded with the ZEUS detector at HERA. [...]
hep-ex/0005018; DESY-2000-071; DESY-00-071.- Hamburg : DESY, 2000 - 23 p. - Published in : Phys. Lett. B 487 (2000) 53-73 Access to fulltext document: PDF; External link: hep-ex/0005018 PDF
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27.
The ATLAS discovery potential for the channel ttH, H to bb / Cammin, J ; Schumacher, M
The production of a light Standard Model Higgs boson in association with a top quark-pair at the LHC is studied with the fast simulation of the ATLAS detector. [...]
ATL-PHYS-2003-024. - 2003. - 49 p.
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28.

ATL-PHO-INDET-2006-004
ATLAS Experiment © 2006 CERN 		Inner Detector installation of ATLAS SCT and TRT barrel into the ATLAS cavern
Transport of ATLAS Inner Detector SCT and TRT Barr [...]
24-08-2006
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29.

ATL-PHO-OREACH-2005-006
ATLAS Experiment © 2005 CERN 		The last Toroid getting down to be installed
03-08-2005
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30.

CERN-EX-0511013
© 2005-2024 CERN (License: CC-BY-4.0) 		Installing the ATLAS calorimeter
Vue centrale du détecteur ATLAS avec ses huit toroides entourant le calorimètre avant son déplacement au centre du détecteur
The eight toroid magnets can be seen surrounding t [...]
04 Nov 2005
Tirage(s): 1
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