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Measurement of charged-particle event shape variables in sqrt(s) = 7 TeV proton-proton interactions with the ATLAS detector

ArXiv 1207.6915 (2012)
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A search for tt resonances with the ATLAS detector in 2.05 fb −1 of proton-proton collisions at √ s =7 TeV

European Physical Journal C 72:7 (2012)

Authors:

G Aad, B Abbott, J Abdallah, SA Khalek, AA Abdelalim, O Abdinov, B Abi, M Abolins, OSA Zeid, H Abramowicz, H Abreu, E Acerbi, BS Acharya, L Adamczyk, DL Adams, TN Addy, J Adelman, S Adomeit, P Adragna, T Adye, S Aefsky, JA Aguilar-Saavedra, M Agustoni, M Aharrouche, SP Ahlen, F Ahles, A Ahmad, M Ahsan, G Aielli, T Akdogan, TPA Åkesson, G Akimoto, AV Akimov, MS Alam, MA Alam, J Albert, S Albrand, M Aleksa, IN Aleksandrov, F Alessandria, C Alexa, G Alexander, G Alexandre, T Alexopoulos, M Alhroob, M Aliev, G Alimonti, J Alison, BMM Allbrooke, PP Allport, SE Allwood-Spiers, J Almond, A Aloisio, R Alon, A Alonso, BA Gonzalez, MG Alviggi, K Amako, C Amelung, VV Ammosov, A Amorim, N Amram, C Anastopoulos, LS Ancu, N Andari, T Andeen, CF Anders, G Anders, KJ Anderson, A Andreazza, V Andrei, XS Anduaga, P Anger, A Angerami, F Anghinolfi, A Anisenkov, N Anjos, A Annovi, A Antonaki, M Antonelli, A Antonov, J Antos, F Anulli, S Aoun, LA Bella, R Apolle, G Arabidze, I Aracena, Y Arai, ATH Arce, S Arfaoui, JF Arguin, E Arik, M Arik, AJ Armbruster, O Arnaez, V Arnal, C Arnault, A Artamonov, G Artoni

Abstract:

A search for top quark pair resonances in final states containing at least one electron or muon has been performed with the ATLAS experiment at the CERN Large Hadron Collider. The search uses a data sample corresponding to an integrated luminosity of 2.05 fb−1, which was recorded in 2011 at a proton-proton centre-of-mass energy of 7 TeV. No evidence for a resonance is found and limits are set on the production cross-section times branching ratio to tt for narrow and wide resonances. For narrow Z′ bosons, the observed 95 % Bayesian credibility level limits range from 9.3 pb to 0.95 pb for masses in the range of mZ′ = 500 GeV to mZ ′= 1300 GeV. The corresponding excluded mass region for a leptophobic topcolour Z′ boson (Kaluza-Klein gluon excitation in the Randall-Sundrum model) is mZ < 880 GeV (mgKK < 1130 GeV).
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Search for magnetic monopoles in sqrt(s) = 7 TeV pp collisions with the ATLAS detector

ArXiv 1207.6411 (2012)
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Measurements of top quark pair relative differential cross-sections with ATLAS in pp collisions at sqrt(s) = 7 TeV

ArXiv 1207.5644 (2012)
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FMOS near-IR spectroscopy of Herschel selected galaxies: star formation rates, metallicity and dust attenuation at z~1

(2012)

Authors:

IG Roseboom, A Bunker, M Sumiyoshi, L Wang, G Dalton, M Akiyama, J Bock, D Bonfield, V Buat, C Casey, E Chapin, DL Clements, A Conley, E Curtis-Lake, A Cooray, JS Dunlop, D Farrah, SJ Ham, E Ibar, F Iwamuro, M Kimura, I Lewis, E Macaulay, G Magdis, T Maihara, G Marsden, T Mauch, Y Moritani, K Ohta, SJ Oliver, MJ Page, B Schulz, Douglas Scott, M Symeonidis, N Takato, N Tamura, T Totani, K Yabe, M Zemcov
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