ATLAS

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The ATLAS EventIndex: Full chain deployment and first operation

Nuclear and Particle Physics Proceedings Elsevier 273 (2016) 913-918

Authors:

D Barberis, J Cranshaw, A Favareto, A Fernández Casaní, ATLAS Collaboration, E Gallas, S González de la Hoz, J Hřivnáč, D Malon, M Nowak, F Prokoshin, J Salt, J Sánchez Martínez, R Többicke, R Yuan
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Combined QCD and electroweak analysis of HERA data

(2016)

Authors:

ZEUS Collaboration, H Abramowicz, I Abt, L Adamczyk, M Adamus, S Antonelli, V Aushev, O Behnke, U Behrens, A Bertolin, S Bhadra, I Bloch, EG Boos, I Brock, NH Brook, R Brugnera, A Bruni, PJ Bussey, A Caldwell, M Capua, CD Catterall, J Chwastowski, J Ciborowski, R Ciesielski, AM Cooper-Sarkar, M Corradi, RK Dementiev, RCE Devenish, S Dusini, B Foster, G Gach, E Gallo, A Garfagnini, A Geiser, A Gizhko, LK Gladilin, Yu A Golubkov, G Grzelak, M Guzik, C Gwenlan, W Hain, O Hlushchenko, D Hochman, R Hori, ZA Ibrahim, Y Iga, M Ishitsuka, F Januschek, NZ Jomhari, I Kadenko, S Kananov, U Karshon, P Kaur, D Kisielewska, R Klanner, U Klein, IA Korzhavina, A Kotanski, U Koetz, N Kovalchuk, H Kowalski, B Krupa, O Kuprash, M Kuze, BB Levchenko, A Levy, S Limentani, M Lisovyi, E Lobodzinska, B Loehr, E Lohrmann, A Longhin, D Lontkovskyi, O Yu Lukina, I Makarenko, J Malka, A Mastroberardino, F Mohamad Idris, N Mohammad Nasir, V Myronenko, K Nagano, T Nobe, RJ Nowak, Yu Onishchuk, E Paul, W Perlanski, NS Pokrovskiy, A Polini, M Przybycien, P Roloff, M Ruspa, DH Saxon, M Schioppa, U Schneekloth, T Schoerner-Sadenius, LM Shcheglova, R Shevchenko, O Shkola, Yu Shyrma, I Singh, IO Skillicorn, W Slominski, A Solano, L Stanco, N Stefaniuk, A Stern, P Stopa, J Sztuk-Dambietz, E Tassi, K Tokushuku, J Tomaszewska, T Tsurugai, M Turcato, O Turkot, T Tymieniecka, A Verbytskyi, WAT Wan Abdullah, K Wichmann, M Wing, S Yamada, Y Yamazaki, N Zakharchuk, AF Zarnecki, L Zawiejski, O Zenaiev, BO Zhautykov, DS Zotkin
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Search for dark matter particles in proton-proton collisions at sqrt(s) = 8 TeV using the razor variables

ArXiv 1603.08914 (2016)
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Measurements of t t-bar charge asymmetry using dilepton final states in pp collisions at sqrt(s) = 8 TeV

ArXiv 1603.06221 (2016)
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Identification of boosted, hadronically decaying W bosons and comparisons with ATLAS data taken at √s = 8 TeV

European Physical Journal C Springer Berlin Heidelberg 76:3 (2016)

Authors:

G Aad, B Abbott, J Abdallah, O Abdinov, R Aben, M Abolins, OS AbouZeid, H Abramowicz, H Abreu, R Abreu, Y Abulaiti, BS Acharya, L Adamczyk, DL Adams, J Adelman, S Adomeit, T Adye, AA Affolder, T Agatonovic-Jovin, J Agricola, JA Aguilar-Saavedra, SP Ahlen, F Ahmadov, G Aielli, H Akerstedt, TPA Åkesson, AV Akimov, GL Alberghi, J Albert, S Albrand, MJ Alconada Verzini, M Aleksa, IN Aleksandrov, C Alexa, G Alexander, T Alexopoulos, M Alhroob, G Alimonti, L Alio, J Alison, SP Alkire, BMM Allbrooke, PP Allport, A Aloisio, A Alonso, F Alonso, C Alpigiani, Cigdem Issever

Abstract:

This paper reports a detailed study of techniques for identifying boosted, hadronically decaying W bosons using 20.3 fb (Formula presented.) of proton–proton collision data collected by the ATLAS detector at the LHC at a centre-of-mass energy (Formula presented.). A range of techniques for optimising the signal jet mass resolution are combined with various jet substructure variables. The results of these studies in Monte Carlo simulations show that a simple pairwise combination of groomed jet mass and one substructure variable can provide a 50 % efficiency for identifying W bosons with transverse momenta larger than 200 GeV while maintaining multijet background efficiencies of 2–4 % for jets with the same transverse momentum. These signal and background efficiencies are confirmed in data for a selection of tagging techniques.
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