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| Report number | ATL-COM-PHYS-2008-041 | ||||||||||||||
| Title | Diboson physics studies with the ATLAS detector (Internal, long version) | ||||||||||||||
| Other report number(s) | CERN-ATL-COM-PHYS-2008-041 | ||||||||||||||
| Author(s) | Bachas, K ; Barber, T ; Batley, R ; Bocci, A ; Christidi, I ; Dai, T ; Goshaw, A ; Han, L ; Hays, C ; Hou, S ; Jiang, Y ; Kotwal, A ; Kruse, M ; Levin, D ; Li, X ; Liang, Z ; Ma, H ; Petridou, C ; Popovic, D ; Reljic, D ; Sampsonidis, D ; Simic, L ; Vranjes, N ; Ward, P ; Wilson, A ; Yang, H ; Yang, Y ; Zhang, P ; Zhao, Z ; Zhong, J ; Zhou, B | ||||||||||||||
| Affiliation | (CERN) | ||||||||||||||
| Note | This is the long version of the diboson CSC note. | ||||||||||||||
| Submitted by | aww@umich.edu on 01 Apr 2008 | ||||||||||||||
| Subject category | Detectors and Experimental Techniques | ||||||||||||||
| Accelerator/Facility, Experiment | CERN LHC ; ATLAS | ||||||||||||||
| Free keywords | diboson ; triple gauge boson couplings ; boosted decision trees ; EWEAK | ||||||||||||||
| Abstract | This note presents studies of the sensitivity of the ATLAS experiment to Standard Model diboson (WW, WZ, ZZ, Wgamma, and Zgamma) production in pp collisions at sqrt(s) = 14 TeV, using final states containing electrons, muons and photons. The studies use the ATLAS Computer System Commissioning (CSC) Monte Carlo datasets, which include trigger information and detector calibration and alignment corrections. The influence of backgrounds on diboson detection is assessed using large samples of fully simulated background events. The cross section measurement uncertainties (both statistical and systematic) are estimated as a function of integrated luminosity (from 0.1 to 30 1/fb). The studies show that the Standard Model WW, WZ, Wgamma, and Zgamma signals can be established with statistical sensitivity better than 5sigma for the first 0.1 1/fb of integrated luminosity, and the ZZ signal can be established with 1.0 1/fb of integrated luminosity. The ATLAS experiment's sensitivity to anomalous triple gauge boson couplings is also established. The anomalous triple gauge boson coupling sensitivities can be significantly improved, even with 0.1 1/fb of data, over the results from the Tevatron that use 1.0 1/fb of data. | ||||||||||||||
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Record created 2008-04-01, last modified 2008-09-08
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