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earch for pair-produced heavy quarks decaying to Wq in the two-lepton channel at √(s)=7  TeV with the ATLAS detector

CollaborationWith : Abdelalim Aly, Ahmed Aly / Alexandre, Gauthier / Backes, Moritz / Barone, Gaetano / Bell, Paul / Bell, William / Benhar Noccioli, Eleonora / Blondel, Alain / Bucci, Francesca / Clark, Allan Geoffrey / Dao, Valerio / Doglioni, Caterina / Ferrere, Didier / Gadomski, Szymon / Gonzalez Sevilla, Sergio / Goulette, Marc / Iacobucci, Giuseppe / La Rosa, Alessandro / Leger, Annie / Lister, Alison / Martin Dit Latour, Bertrand / Mermod, Philippe / Mora Herrera, Maria Clemencia Rosario / Nektarijevic, Snezana / Nikolics, Katalin / Pasztor, Arpad / Pohl, Martin / Rosbach, Kilian / Rosselet, Laurent / Wu, Xin
Published in Physical Review. D. 2012, vol. 86, no. 01, 012007
Abstract A search is presented for heavy-quark pair production (QQ) under the decay hypothesis QQ→W+qW−q with q=d, s, b for up-type Q or q=u, c for down-type Q. The search is performed with 1.04  fb−1 of integrated luminosity from pp collisions at s√=7  TeV collected by the ATLAS detector at the CERN LHC. Dilepton final states are selected, requiring large missing transverse momentum and at least two jets. Mass reconstruction of heavy-quark candidates is performed by assuming that the W boson decay products are nearly collinear. The data are in agreement with standard model expectations; a heavy quark with mass less than 350 GeV is excluded at 95% confidence level.
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ATLAS COLLABORATION. earch for pair-produced heavy quarks decaying to Wq in the two-lepton channel at √(s)=7  TeV with the ATLAS detector. In: Physical Review. D, 2012, vol. 86, n° 01, p. 012007. doi: 10.1103/PhysRevD.86.012007 https://archive-ouverte.unige.ch/unige:39751

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Deposited on : 2014-08-26

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