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Statistics of charge collection in liquid argon and liquid xenon.

Physical review. A, General physics 38:11 (1988) 5793-5800

Authors:

J Thomas, DA Imel, S Biller
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A large scale purification system for a liquid argon time projection chamber

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment Elsevier 258:2 (1987) 170-176

Authors:

Peter J Doe, Richard C Allen, Steven D Biller, Gerhard Bühler, Wayne A Johnson, Herbert H Chen
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A search for ttbar resonances in the lepton plus jets final state with ATLAS using 4.7 fb^{-1} of pp collisions at sqrt{s} = 7 TeV

Abstract:

A search for new particles that decay into top quark pairs (ttbar) is performed with the ATLAS experiment at the LHC using an integrated luminosity of 4.7 fb^-1 of proton-proton (pp) collision data collected at a center-of-mass energy sqrt(s)=7 TeV. In the ttbar --> WbWb decay, the lepton plus jets final state is used, where one W boson decays leptonically and the other hadronically. The ttbar system is reconstructed using both small-radius and large-radius jets, the latter being supplemented by a jet substructure analysis. A search for local excesses in the number of data events compared to the Standard Model expectation in the ttbar invariant mass spectrum is performed. No evidence for a ttbar resonance is found and 95% credibility-level limits on the production rate are determined for massive states predicted in two benchmark models. The upper limits on the cross section times branching ratio of a narrow Z' resonance range from 5.1 pb for a boson mass of 0.5 TeV to 0.03 pb for a mass of 3 TeV. A narrow leptophobic topcolor Z' resonance with a mass below 1.74 TeV is excluded. Limits are also derived for a broad color-octet resonance with Gamma/m = 15.3%. A Kaluza-Klein excitation of the gluon in a Randall-Sundrum model is excluded for masses below 2.07 TeV.
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Cloud computing and the Square Kilometer Array

Authors:

JC Tseng, Newman R

Development, characterisation, and deployment of the SNO+ liquid scintillator

JINST

Authors:

SNO Collaboration, MR Anderson, S Andringa, L Anselmo, E Arushanova, S Asahi, M Askins, DJ Auty, AR Back, Z Barnard, N Barros, D Bartlett, F Barão, R Bayes, EW Beier, A Bialek, SD Biller, E Blucher, R Bonventre, M Boulay, D Braid, E Caden, EJ Callaghan, J Caravaca, J Carvalho, L Cavalli, D Chauhan, M Chen, O Chkvorets, KJ Clark, B Cleveland, D Cookman, C Connors, IT Coulter, MA Cox, D Cressy, X Dai, C Darrach, B Davis-Purcell, C Deluce, MM Depatie, F Descamps, J Dittmer, F Di Lodovico, N Duhaime, F Duncan, J Dunger, AD Earle, D Fabris, E Falk, A Farrugia, N Fatemighomi, V Fischer, E Fletcher, R Ford, K Frankiewicz, N Gagnon, A Gaur, K Gilje, OI González-Reina, D Gooding, P Gorel, K Graham, C Grant, J Grove, S Grullon, E Guillian, S Hall, AL Hallin, D Hallman, S Hans, J Hartnell, P Harvey, M Hedayatipour, WJ Heintzelman, J Heise, RL Helmer, D Horne, B Hreljac, J Hu, ASM Hussain, T Iida, AS Inácio, M Jackson, NA Jelley, CJ Jillings, C Jones, PG Jones, K Kamdin, T Kaptanoglu, J Kaspar, K Keeter, C Kefelian, P Khaghani, L Kippenbrock, JR Klein, R Knapik, J Kofron, LL Kormos, S Korte, B Krar, C Kraus, CB Krauss, T Kroupova, K Labe, F Lafleur, I Lam, C Lan, BJ Land, R Lane, S Langrock, A LaTorre, I Lawson, L Lebanowski, GM Lefeuvre, EJ Leming, A Li, J Lidgard, B Liggins, YH Lin, X Liu, Y Liu, V Lozza, M Luo, S Maguire, A Maio, K Majumdar, S Manecki, J Maneira, RD Martin, E Marzec, A Mastbaum, J Mauel, N McCauley, AB McDonald, P Mekarski, M Meyer, C Miller, C Mills, M Mlejnek, E Mony, I Morton-Blake, MJ Mottram, S Nae, M Nirkko, LJ Nolan, VM Novikov, HM O'Keeffe, E O'Sullivan, GD Orebi Gann, MJ Parnell, J Paton, SJM Peeters, T Pershing, Z Petriw, J Petzoldt, L Pickard, D Pracsovics, G Prior, JC Prouty, S Quirk, A Reichold, S Riccetto, R Richardson, M Rigan, A Robertson, J Rose, R Rosero, PM Rost, J Rumleskie, MA Schumaker, MH Schwendener, D Scislowski, J Secrest, M Seddighin, L Segui, S Seibert, I Semenec, F Shaker, T Shantz, MK Sharma, TM Shokair, L Sibley, JR Sinclair, K Singh, P Skensved, M Smiley, T Sonley, R Stainforth, M Strait, MI Stringer, R Svoboda, A Sörensen, B Tam, J Tatar, L Tian, N Tolich, J Tseng, HWC Tseung, E Turner, R Van Berg, JGC Veinot, CJ Virtue, B von Krosigk, E Vázquez-Jáuregui, JMG Walker, M Walker, SC Walton, J Wang, M Ward, O Wasalski, J Waterfield, JJ Weigand, RF White, JR Wilson, TJ Winchester, P Woosaree, A Wright, JP Yanez, M Yeh, T Zhang, Y Zhang, T Zhao, K Zuber, A Zummo

Abstract:

A liquid scintillator consisting of linear alkylbenzene as the solvent and 2,5-diphenyloxazole as the fluor was developed for the SNO+ experiment. This mixture was chosen as it is compatible with acrylic and has a competitive light yield to pre-existing liquid scintillators while conferring other advantages including longer attenuation lengths, superior safety characteristics, chemical simplicity, ease of handling, and logistical availability. Its properties have been extensively characterized and are presented here. This liquid scintillator is now used in several neutrino physics experiments in addition to SNO+.
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