Expected Performance of the ATLAS Experiment - Detector, Trigger and Physics (2008)
Abat, E., Abbott, B., Abdallah, J., Abdelalim, A. A., Abdesselam, A., ...
A detailed study is presented of the expected performance of the ATLAS detector. The reconstruction of tracks, leptons, photons, missing energy and jets is investigated, together with the performance...
THE ATLAS HIGH LEVEL TRIGGER GROUP ∗ (2008)
S. Armstrong, J. T. Baines, C. P. Bee, M. Biglietti, A. Bogaerts, V. Boisvert, ...
Given the extremely high bunch crossing rate foreseen at the Large Hadron Collider (LHC) and the general-purpose nature of the ATLAS particle physics experiment, after the hardware-based first level...
Data Objects and Algorithms (2008)
P. Calafiura, C. G. Leggett, D. R. Quarrie, H. Ma, S. Rajagopalan
The Atlas collaboration at CERN[1] has adopted the Gaudi software architecture which belongs to the blackboard family: data objects produced by knowledge sources (e.g. reconstruction modules) are...
Integration of the Trigger and Data Acquisition Systems in ATLAS (2008)
Abolins, M, Adragna, P, Aleksandrov, E, Aleksandrov, I, Amorim, A, Anderson, K, ...
During 2006 and the first half of 2007, the installation, integration and commissioning of trigger and data acquisition (TDAQ) equipment in the ATLAS experimental area have progressed. There have...
Cuthbertson, B. H., Amiri, A. R., Croal, B. L., Rajagopalan, S., Alozairi, O., Brittenden, J., ...
Background B-type natriuretic peptide (BNP) levels predict cardiovascular risk in several settings. We hypothesized that they would identify individuals at increased risk of early cardiac...
Similarity of intermittency characteristics of temperature and transverse velocity (2007)
Xu, G., Zhou, T., Rajagopalan, S.
The intermittency characteristics of the longitudinal (u) and transverse (v) velocity and temperature (θ) at similar Taylor microscale Reynolds numbers have been compared in a turbulent round jet....
Similarity of intermittency characteristics of temperature and transverse velocity (2007)
Xu, G., Zhou, T., Rajagopalan, S.
The intermittency characteristics of the longitudinal (u) and transverse (v) velocity and temperature (θ) at similar Taylor microscale Reynolds numbers have been compared in a turbulent round jet....
Aharrouche, M, Colas, Jacques, Di Ciaccio, L, El-Kacimi, M, Gaumer, O, Gouanère, M, ...
A module of the ATLAS electromagnetic barrel liquid argon calorimeter was exposed to the CERN electron test-beam at the H8 beam line upgraded for precision momentum measurement. The available...
Construction, assembly and tests of the ATLAS electromagnetic barrel calorimeter (2006)
Aubert, B., Beaugiraud, B., Colas, J., Delebecque, P., Di Ciaccio, L., El Kacimi, M., ...
The construction and assembly of the two half barrels of the ATLAS central electromagnetic calorimeter and their insertion into the barrel cryostat are described. The results of the qualification...
Construction, assembly and tests of the ATLAS electromagnetic barrel calorimeter (2005)
Aubert, B, Beaugiraud, B, Colas, Jacques, Delebecque, P, Di Ciaccio, L, El-Kacimi, M, ...
The construction and assembly of the two half barrels of the ATLAS central electromagnetic calorimeter and their insertion into the barrel cryostat are described. The results of the qualification...
A precision measurement of the mass of the top quark (2004)
Abazov, VM, Abbott, B, Abdesselam, A, Abolins, M, Abramov, V, Acharya, BS, ...
The standard model of particle physics contains parameters such as particle masses - whose origins are still unknown and which cannot be predicted, but whose values are constrained through their...
Combination of CDF and D0 results on the W boson mass and width (2004)
Abazov, V.M., Abbott, B., Abdesselam, A., Abolins, M., Abramov, V., S. Acharya, B., ...
The results based on 199295 data (Run 1) from the CDF and D0 experiments on the measurements of the W boson mass and width are presented, along with the combined results. We report a Tevatron...
Search for new particles in the two-jet decay channel with the D0 detector (2004)
Abazov, V.M., Abbott, B., Abdesselam, A., Abolins, M., Abramov, V., Acharya, B.S., ...
We present the results of a search for the production of new particles decaying into two jets in pbarp collisions at sqrt{s} = 1.8 TeV, using the DZero 1992-1995 data set corresponding to 109 pb^-1....
Search for narrow $t\bar t$ resonances in $p\barp$ collisions at $\sqrt s$ = 1.8 TeV (2004)
Abazov, V.M., Abbott, B., Abdesselam, A., Abolins, M., Abramov, V., Acharya, B.S., ...
A search for narrow resonances that decay into t-tbar pairs has been performed using 130 pb^{-1} of data in the lepton+jets channel collected in p-pbar collisions at \sqrt{s} = 1.8 TeV. There is no...
Abazov, V.M., Abbott, B., Abdesselam, A., Abolins, M., Abramov, V., Acharya, B.S., ...
Using 85.2 +/- 3.6 pb^-1 of p-pbar collisions collected at sqrt(s)=1.8 TeV with the D0 detector at Fermilab's Tevatron Collider, we present the results of a search for direct pair production of...
A precision measurement of the mass of the top quark (2004)
Abazov, V.M., Abbott, B., Abdesselam, A., Abolins, M., Abramov, V., Acharya, B.S., ...
The Standard Model of particle physics contains about two dozen parameters - such as particle masses - whose origins are still unknown and cannot be predicted, but whose values are constrained...
Performance of the ATLAS Electromagnetic Calorimeter End-cap Module 0 (2003)
Aubert, Bernard, Abouelouafa, M, Alexa, C, Astesan, F, Augé, E, Aulchenko, V M, ...
The construction and beam test results of the ATLAS electromagnetic end-cap calorimeter pre-production module 0 are presented. The stochastic term of the energy resolution is between 10% GeV^1/2 and...
Performance of the ATLAS electromagnetic calorimeter barrel module 0 (2003)
Aubert, Bernard, Abouelouafa, M, Alexa, C, Astesan, F, Augé, E, Aulchenko, V M, ...
The construction and performance of the barrel pre-series module 0 of the future ATLAS electromagnetic calorimeter at the LHC is described. The signal reconstruction and performance of ATLAS-like...
Performance of the Atlas electromagnetic calorimeter barrel module 0 (2003)
Aubert, B., Ballansat, J., Bazan, A., Beaugiraud, B., Boniface, J., Chollet, F., ...
The construction and performance of the barrel pre-series module 0 of the future ATLAS electromagnetic calorimeter at the LHC is described. The signal reconstruction and performance of ATLAS-like...
Performance of the ATLAS electromagnetic calorimeter end-cap module 0 (2003)
Aubert, B., Ballansat, J., Bazan, A., Beaugiraud, B., Boniface, J., Chollet, F., ...
The construction and beam test results of the ATLAS electromagnetic end-cap calorimeter pre-production module 0 are presented. The stochastic term of the energy resolution is between 10% GeV^1/2 and...
Abazov, V.M., Abbott, B., Abdesselam, A., Abolins, M., Abramov, V., Acharya, B.S., ...
Using the D0 detector, we have observed events produced in pbar-p collisions that contain W or Z bosons in conjunction with very little energy deposition (``rapidity gaps'') in large forward regions...
Search for large extra dimensions in the monojet + $\E_T$ channel with the D0 detector (2003)
Abazov, V.M., Abbott, B., Abdesselam, A., Abolins, M., Abramov, V., Acharya, B.S., ...
We present a search for large extra dimensions (ED) in p-pbar collisions at a center-of-mass energy of 1.8 TeV using data collected by the D0 detector at the Fermilab Tevatron in 1994-1996. Data...
Abazov, V.M., Abbott, B., Abdesselam, A., Abolins, M., Abramov, V., Acharya, B.S., ...
We present data on multiple production of jets with transverse energies near 20 GeV in p-pbar collisions at Root(s) = 1.8 TeV. QCD calculations in the parton-shower approximation of PYTHIA and HERWIG...
Data Objects and Algorithms (2003)
P. Calafiura, C. G. Leggett, D. R. Quarrie, H. Ma, S. Rajagopalan
The Atlas collaboration at CERN[1] has adopted the Gaudi software architecture which belongs to the blackboard family: data objects produced by knowledge sources (e.g. reconstruction modules) are...
Abazov, V.M., Abbott, B., Abdesselam, A., Abolins, M., Abramov, V., Acharya, B.S., ...
We describe a search for evidence of minimal supergravity (mSUGRA) in 92.7 pb^(-1) of data collected with the D{\O}detector at the Fermilab Tevatron ppbar collider at center of mass energy of 1.8...
Search for R-parity violating supersymmetry in two-muon and four-jet topologies (2002)
Abazov, V.M., Abbott, B., Abdesselam, A., Abolins, M., Abramov, V., Acharya, B.S., ...
We present results of a search for R-parity-violating decay of the neutralino chi_1^0, taken to be the Lightest Supersymmetric Particle. It is assumed that this decay proceeds through one of the...
Abazov, V.M., Abbott, B., Abdesselam, A., Abolins, M., Abramov, V., Acharya, B.S., ...
We present the results of a search for leptoquark (LQ) pairs in (85.2 +- 3.7) pb^{-1} of p anti-p collider data collected by the D0 experiment at the Fermilab Tevatron. We observe no evidence for...
Direct search for charged Higgs bosons in decays of top quarks (2002)
Abazov, V.M., Abbott, B., Abdesselam, A., Abolins, M., Abramov, V., Acharya, B.S., ...
We present a search for charged Higgs bosons in decays of pair-produced top quarks in pbar p collisions at sqrt(s) = 1.8 TeV using 62.2 pb^-1 of data recorded by the D0 detector at the Fermilab...
Abazov, V.M., Abbott, B., Abdesselam, A., Abolins, M., Abramov, V., Acharya, B.S., ...
The D0 Collaboration has studied for the first time the properties of hadron-collider jets reconstructed with a successive-combination algorithm based on relative transverse momenta ($k_{\perp}$) of...
Abazov, V.M., Abbott, B., Abdesselam, A., Abolins, M., Abramov, V., Acharya, B.S., ...
The central inclusive jet cross section has been measured using a successive-combination algorithm for reconstruction of jets. The measurement uses 87.3 pb^{-1} of data collected with the D0 detector...
Object oriented reconstruction and particle identification in the ATLAS calorimeter (2001)
Caron, B., Collot, J., Frank, E., Gupta, A., Loch, P., Ma, H., ...
The reconstruction and subsequent particle identification is a challenge in a complex and a high luminosity environment such as those expected in the ATLAS detector at the LHC. The ATLAS software has...
Abazov, V.M., Abbott, B., Abdesselam, A., Abolins, M., Abramov, V., Acharya, B.S., ...
The inclusive cross section for production of isolated photons has been measured in \pbarp collisions at $\sqrt{s} = 630$ GeV with the \D0 detector at the Fermilab Tevatron Collider. The photons span...
Search for New Physics Using Quaero: A General Interface to - D0 Event Data (2001)
Abazov, V.M., Abbott, B., Abdesselam, A., Abolins, M., Abramov, V., Acharya, B.S., ...
We describe Quaero, a method that i) enables the automatic optimization of searches for physics beyond the standard model, and ii) provides a mechanism for making high energy collider data generally...
Search for first-generation scalar and vector leptoquarks (2001)
Abazov, V.M., Abbott, B., Abdesselam, A., Abolins, M., Abramov, V., Acharya, B.S., ...
We describe a search for the pair production of first-generation scalar and vector leptoquarks in the eejj and enujj channels by the D0 Collaboration. The data are from the 1992--1996 ppbar run at...
Search for single top quark production at D0 using neural networks (2001)
Abazov, V.M., Abbott, B., Abdesselam, A., Abolins, M., Abramov, V., Acharya, B.S., ...
We present a search for electroweak production of single top quarks in ~90 pb^-1 of data collected with the DZero detector at the Fermilab Tevatron collider. Using arrays of neural networks to...
Abazov, V.M., Abbott, B., Abdesselam, A., Abolins, M., Abramov, V., Acharya, B.S., ...
We report on a measurement of the ratio of the differential cross sections for W and Z boson production as a function of transverse momentum in proton-antiproton collisions at sqrt(s) = 1.8 TeV. This...
Search for heavy particles decaying into electron-positron pairs in $p\bar p$ collisions (2001)
Abazov, V.M., Abbott, B., Abdesselam, A., Abolins, M., Abramov, V., Acharya, B.S., ...
We present results of searches for technirho, techniomega, and Z' particles, using the decay channels technirho, techniomega, Z' -> e+e-. The search is based on 124.8 pb-1 of data collected by the D0...
Abazov, V.M., Abbott, B., Abdesselam, A., Abolins, M., Abramov, V., Acharya, B.S., ...
We report a measurement of the differential cross section for W boson production as a function of its transverse momentum in proton-antiproton collisions at sqrt{s} = 1.8 TeV. The data were collected...
Abbott, B., Abolins, M., Abramov, V., Acharya, B S., Adams, D L., Adams, M., ...
We present the first measurement of the electron angular distribution parameter alpha_2 in W to e nu events produced in proton-antiproton collisions as a function of the W boson transverse momentum....
Search for electroweak production of single top quarks in $p\bar{p}$ collisions. (2001)
Abbott, B., Abolins, M., Abramov, V., Acharya, B.S., Adams, D.L., Adams, M., ...
Automatic management of network security policy (2001)
J. Burns, A. Cheng, P. Gurung, S. Rajagopalan, P. Rao, D. Rosenbluth, ...
This paper describes work in our project funded by DARPA Dynamic Coalitions program to design, develop, and demonstrate a system for automatically managing security policies in dynamic networks.....
Cross Section for b Jet Production in $p\overline{p}$ Collisions at $\sqrt{s}$ = 1.8 TeV (2000)
Abbott, B., Abolins, M., Abramov, V., Acharya, B S., Adams, D L., Adams, M., ...
Measurement of the W boson mass using large rapidity electrons (2000)
Abbott, B., Abolins, M., Abramov, V., Acharya, B.S., Adam, I., Adams, D.L., ...
We present a measurement of the W boson mass using data collected by the D0 experiment at the Fermilab Tevatron during 1994--1995. We identify W bosons by their decays to e-nu final states where the...
Abbott, B., Abolins, M., Abramov, V., Acharya, B S., Adams, D L., Adams, M., ...
We present measurements of the b-bbar production cross section and angular correlations using the D0 detector at the Fermilab Tevatron p-pbar Collider operating at sqrt(s) = 1.8 TeV. The b quark...
Abbott, B., Abolins, M., Abramov, V., Acharya, B.S., Adams, D.L., Adams, M., ...
he D0 collaboration has performed a study of spin correlation in tt-bar production for the process tt-bar to bb-bar W^+W^-, where the W bosons decay to e-nu or mu-nu. A sample of six events was...
Abbott, B., Abolins, M., Abramov, V., Acharya, B.S., Adams, D.L., Adams, M., ...
Inclusive dijet production at large pseudorapidity intervals (delta_eta) between the two jets has been suggested as a regime for observing BFKL dynamics. We have measured the dijet cross section for...
Abbott, B., Abolins, M., Abramov, V., Acharya, B.S., Adams, D.L., Adams, M., ...
We report on a measurement of sigma(p-pbar to W+X) times B(W to tau+nu) in p-pbar collisions at sqrt(s) = 1.8 TeV at the Fermilab Tevatron. The measurement is based on an integrated luminosity of 18...
Small-angle muon and bottom-quark production in $p\bar p$ collisions at $\sqrt s$ = 1.8 TeV (2000)
Abbott, B., Abolins, M., Abramov, V., Acharya, B.S., Adam, I., Adams, D.L., ...
This Letter describes a measurement of the muon cross section originating from b quark decay in the forward rapidity range 2.4 y(mu) 3.2 in pbarp collisions at sqrt(s) = 1.8 TeV. The data used in...
Abbott, B., Abolins, M., Abramov, V., Acharya, B.S., Adam, I., Adams, D.L., ...
We report on measurements of inclusive cross sections times branching fractions into electrons for W and Z bosons produced in ppbar collisions at sqrts=1.8 TeV.From an integrated luminosity of 84.5...
Abbott, B., Abolins, M., Abramov, V., Acharya, B.S., Adam, I., Adams, D.L., ...
We present a measurement of the transverse momentum distribution of Z bosons produced in ppbar collisions at sqrt{s}=1.8 TeV using data collected by the D0 experiment at the Fermilab Tevatron...
Isolated photon cross section in p$\bar p$ collisions at $\sqrt s$ = 1.8 TeV (2000)
Abbott, B., Abolins, M., Abramov, V., Acharya, B.S., Adams, D.L., Adams, M., ...
We report a new measurement of the cross section for the production of isolated photons, with transverse energies (ET) above 10 GeV and pseudorapidities |eta| < 2.5, in p pbar collisions at sqrt{s} =...
Search for second-generation leptoquark pairs in $\bar{p}p$ collisions at $\sqrt s$ = 1.8 TeV (2000)
Abbott, B., Abolins, M., Abramov, V., Acharya, B.S., Adams, D.L., Adams, M., ...
We have searched for second generation leptoquark (LQ) pairs in the \mu\mu+jets channel using 94+-5 pb^{-1} of pbar-p collider data collected by the D0 experiment at the Fermilab Tevatron during...
Abbott, B., Abolins, M., Abramov, V., Acharya, B.S., Adam, I., Adams, D.L., ...
We present a measurement of the differential cross section as a function of transverse momentum of the Z boson in ppbar collisions at sqrt{s}=1.8 TeV using data collected by the D0 experiment at the...
Measurement of the W boson mass using electrons at large rapidities (2000)
Abbott, B., Abolins, M., Abramov, V., Acharya, B.S., Adam, I., Adams, D.L., ...
Search for R-parity violating supersymmetry in the dielectron channel (1999)
Abbott, B., Abolins, M., Abramov, V., Acharya, B.S., Adam, I., Adams, D.L., ...
We report on a search for R-parity violating supersymmetry in p-pbar collisions at sqrt(s) = 1.8 TeV using the D0 detector at Fermilab. Events with at least two electrons and four or more jets were...
Abbott, B., Abolins, M., Abramov, V., Acharya, B.S., Adam, I., Adams, D.L., ...
We report the results of a study of color coherence effects in ppbar collisions based on data collected by the D0 detector during the 1994-1995 run of the Fermilab Tevatron Collider, at a center of...
Abbott, B., Abolins, M., Abramov, V., Acharya, B.S., Adam, I., Adams, D.L., ...
We report on a search for second generation leptoquarks (LQ) produced in $p\bar{p}$ collisions at sqrt{s} = 1.8 TeV using the D0 detector at Fermilab. Second generation leptoquarks are assumed to be...
Studies of WW and WZ production and limits on anomalous WW$\gamma$ and WWZ couplings (1999)
Abbott, B., Abolins, M., Abramov, V., Acharya, B.S., Adam, I., Adams, D.L., ...
Evidence of anomalous WW and WZ production was sought in pbar{p} collisions at a center-of-mass energy of sqrt(s) = 1.8 TeV. The final states $WW (WZ) to mu-nu-jet-jet + X, WZ to mu-nu-e-e + X and WZ...
Search for bottom squarks in $p\barp$ collisions at $\sqrt{s}$ = 1.8 TeV (1999)
Abbott, B., Abolins, M., Abramov, V., Acharya, B.S., Adam, I., Adams, D.L., ...
We report on a search for bottom squarks produced in pbarp collisions at sqrt(s) = 1.8 TeV using the D0 detector at Fermilab. Bottom squarks are assumed to be produced in pairs and to decay to the...
Managing Security in Dynamic Networks (1999)
Alexander V. Konstantinou, Sandeep Bhatt, Yechiam Yemini, S. Rajagopalan
This paper describes our initial steps towards self-conguring mechanisms for automating high-level security and service policies in dynamic networks. We build on the NESTOR system developed at...
Managing Security in Dynamic Networks (1999)
Alexander Konstantinou Sandeep, Sandeep Bhatt, Yechiam Yemini, S. Rajagopalan
This paper describes our initial steps towards self-con#guring mechanisms for automating high-level security and service policies in dynamic networks. We build on the NESTOR system developed at...
Conditional oblivious transfer and time-released encryption (1999)
Giovanni Di Crescenzo, Rafail Ostrovsky, S. Rajagopalan
Abstract. We consider the problem of sending messages \into the future." Previous constructions for this task were either based on heuristic assumptions or did not provide anonymity to the...
Managing Security in Dynamic Networks (1999)
Er V. Konstantinou, Yechiam Yemini, Eep Bhatt, S. Rajagopalan, Telcordia Technologies Bellcore
Permission is granted for noncommercial reproduction of the work for educational or research purposes.
Analysis of a Mobile-Assisted Adaptive Location Management Strategy (1995)
Yates Rose, R. Yates, C. Rose, S. Rajagopalan, B. Badrinath
Source messages intended for a mobile host can be routed in one of two ways. Either the source knows the direct route to the mobile host, and is informed of all location changes by the mobile host...
PHOTO AND ELECTROCHEMICAL DOPING IN Ge-BASED CHALCOGENIDES (1981)
Rajagopalan, S., Solomon Harshavardhan, K., Singh, Bhanwar, Chopra, K.
Photo and electrochemical doping of obliquely deposited Ge-chalcogenide films have been studied by AES/XPS techniques. The effect of electrochemical adsorption and photodoping on the optical...
Devadatta, S., Radhakrishna, S., Fox, Wallace, Mitchison, D.A., Rajagopalan, S., Sivasubramanjan, S., ...
Conditional Oblivious Transfer and Timed-Release Encryption
Giovanni Di Crescenzo, Rafail Ostrovsky, S. Rajagopalan
. We consider the problem of sending messages "into the future. " Previous constructions for this task were either based on heuristic assumptions or did not provide anonymity to the sender...
Calorimeter clustering algorithms: Description and performance
Lampl, W., Laplace, S., Lelas, D., Loch, P., Ma, H., Menke, S., ...
This note describes the performance of the calorimeter clustering algorithms used for ATLAS, and which provide inputs for particle identification. ATLAS uses two principal algorithms. The first is...
Devadatta, S., Radhakrishna, S., Fox, Wallace, Mitchison, D. A., Rajagopalan, S., Sivasubramanian, S., ...
Bacteriological response is generally considered the best criterion for assessing the efficacy of chemotherapy in patients with pulmonary tuberculosis. The bacteriological methods most commonly used...