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Measurement of the tt虅 production cross section in pp虅 collisions at s=1.96TeV using secondary vertex b tagging

Physical Review D - Particles, Fields, Gravitation and Cosmology 74:11 (2006)

Authors:

VM Abazov, B Abbott, M Abolins, BS Acharya, M Adams, T Adams, E Aguilo, SH Ahn, M Ahsan, GD Alexeev, G Alkhazov, A Alton, G Alverson, GA Alves, M Anastasoaie, LS Ancu, T Andeen, S Anderson, B Andrieu, MS Anzelc, Y Arnoud, M Arov, A Askew, BA Asman, ACS Assis Jesus, O Atramentov, C Autermann, C Avila, C Ay, F Badaud, A Baden, L Bagby, B Baldin, DV Bandurin, P Banerjee, S Banerjee, E Barberis, P Bargassa, P Baringer, C Barnes, J Barreto, JF Bartlett, U Bassler, D Bauer, S Beale, A Bean, M Begalli, M Begel, C Belanger-Champagne, L Bellantoni, A Bellavance, JA Benitez, SB Beri, G Bernardi, R Bernhard, L Berntzon, I Bertram, M Besan莽on, R Beuselinck, VA Bezzubov, PC Bhat, V Bhatnagar, M Binder, C Biscarat, I Blackler, G Blazey, F Blekman, S Blessing, D Bloch, K Bloom, U Blumenschein, A Boehnlein, TA Bolton, G Borissov, K Bos, T Bose, A Brandt, R Brock, G Brooijmans, A Bross, D Brown, NJ Buchanan, D Buchholz, M Buehler, V Buescher, S Burdin, S Burke, TH Burnett, E Busato, CP Buszello, JM Butler, P Calfayan, S Calvet, J Cammin, S Caron, W Carvalho, BCK Casey, NM Cason, H Castilla-Valdez, S Chakrabarti

Abstract:

We report a new measurement of the tt虅 production cross section in pp虅 collisions at a center-of-mass energy of 1.96 TeV using events with one charged lepton (electron or muon), missing transverse energy, and jets. Using 425pb-1 of data collected using the D0 detector at the Fermilab Tevatron Collider, and enhancing the tt虅 content of the sample by tagging b jets with a secondary vertex tagging algorithm, the tt虅 production cross section is measured to be 蟽pp虅鈫抰t虅+X=6.6卤0.9(stat+syst) 卤0.4(lum)pb. This cross section is the most precise D0 measurement to date for tt虅 production and is in good agreement with standard model expectations. 漏 2006 The American Physical Society.

Online system for normalizing data acquired by the Fermilab D脴 experiment

Journal of the Korean Physical Society 49:6 (2006) 2247-2252

Authors:

SK Park, J Park, S Lee, SH Ahn, SJ Hong, TJ Kim, KS Lee, M Begel, T Andeen, H Schellman, J Stein, S Yacoob, E Gallas, V Sirotenko, J Hauptman, G Snow

Abstract:

The D脴 experiment uses a dedicated data acquisition system to collect, archive, monitor, and distribute the information necessary to normalize triggered data for physics analyses. This system has been in place since the beginning of Run 2 of the Fermilab Tevatron collider in 2001 and provides real-time feedback on the instantaneous and triggered luminosities in the D脴 and Tevatron control rooms, as well as the status reports needed for smooth operation of the experiment. This paper describes the architecture and the implementation of this system.

The barrel modules of the ATLAS semiconductor tracker

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 568:2 (2006) 642-671

Authors:

A Abdesselam, T Akimoto, PP Allport, J Alonso, B Anderson, L Andricek, F Anghinolfi, RJ Apsimon, G Barbier, AJ Barr, LE Batchelor, RL Bates, JR Batley, GA Beck, PJ Bell, A Belymam, J Bernabeu, S Bethke, JP Bizzell, J Bohm, R Brenner, TJ Brodbeck, Z Broklova, J Broz, P Bruckman De Renstrom, CM Buttar, JM Butterworth, C Carpentieri, AA Carter, JR Carter, DG Charlton, A Cheplakov, E Chesi, A Chilingarov, S Chouridou, ML Chu, V Cindro, A Ciocio, JV Civera, A Clark, P Coe, AP Colijn, T Cornelissen, DP Cosgrove, MJ Costa, W Dabrowski, J Dalmau, KM Danielsen, I Dawson, B Demirkoz, P Dervan, Z Dolezal, M Donega, M D'Onofrio, O Dorholt, JD Dowell, Z Drasal, IP Duerdoth, M Dwuznik, S Eckert, T Ekelof, L Eklund, C Escobar, V Fadeyev, L Feld, P Ferrari, D Ferrere, L Fiorini, R Fortin, JM Foster, H Fox, TJ Fraser, J Freestone, R French, J Fuster, S Gadomski, BJ Gallop, C Garc铆a, JE Garcia-Navarro, MD Gibson, S Gibson, MGD Gilchriese, J Godlewski, S Gonzalez-Sevilla, MJ Goodrick, A Gorisek, E Gornicki, A Greenall, C Grigson, AA Grillo, J Grosse-Knetter, C Haber, K Hara, FG Hartjes, D Hauff, BM Hawes, SJ Haywood, NP Hessey, A Hicheur, JC Hill

Abstract:

This paper describes the silicon microstrip modules in the barrel section of the SemiConductor Tracker (SCT) of the ATLAS experiment at the CERN Large Hadron Collider (LHC). The module requirements, components and assembly techniques are given, as well as first results of the module performance on the fully assembled barrels that make up the detector being installed in the ATLAS experiment. 漏 2006 Elsevier B.V. All rights reserved.

Recent results from RD50

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment Elsevier 569:1 (2006) 69-72

The barrel modules of the ATLAS semiconductor tracker

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment A568 (2006) 642-671

Authors:

RB Nickerson, J. Carter, T. Akimotoa, P.P. Allport