Search for new particles in two-jet final states in 7 TeV proton-proton collisions with the ATLAS detector at the LHC

• Published in: Physical review letters Vol. 105; no. 16; p. 161801
• Main Authors: Adelman, J, Akdogan, T, Alon, R, Barillari, T, Barisonzi, M, Barlow, N, Beare, B, Bednyakov, V A, Berge, D, Besson, N, Bingul, A, Bocci, A, Bos, K, Britton, D, Caforio, D, Capeans Garrido, M D M, Carron Montero, S, Cavalli, D, Cavalli-Sforza, M, Chiodini, G, Christov, A, Ciapetti, G, Corso-Radu, A, Dahlhoff, A, Dalmau, J, Daum, C, Davies, M, Del Peso, J, Dietl, H, Dolejsi, J, Erdmann, J, Ernst, M, Fleck, I, Giusti, P, Gjelsten, B K, Grenier, P, Harper, R, Hasegawa, Y, Huang, G S, Hubacek, Z, Iwasaki, H, Kabachenko, V V, Kazarinov, M Y, Keeler, R, Knobloch, J, Köpke, L, Koi, T, Konoplich, R, Konovalov, S P, Kotov, S, Kowalski, H, Kramarenko, V A, Kummer, C, Kuze, M, Lavorato, A, Lellouch, D, Lessard, J-R, Lim, H, Loch, P, Loddenkoetter, T, Lutz, G, Lynn, J, Maiani, C, Malek, F, Marchesotti, M, Maslennikov, A L, Mitra, A, Möser, N, Mueller, J, Mussche, I, Myagkov, A G, Ochi, A, Odaka, S, Oliver, C, Pleskach, A V, Primavera, M, Ratoff, P N, Redlinger, G, Reljic, D, Rinaldi, L, Sala, P, Sbarra, C, Schernau, M, Sobie, R, Stanek, R W, Taboada Gameiro, S, Tanaka, J, Teixeira-Dias, P, Thomson, E, Thun, R P, Valkar, S, Voss, R, Vranjes, N, Watkins, P M, Williams, H H, Wraight, K, Wrona, B, Yorita, K, Yurkewicz, A, Zur Nedden, M
• Format: Journal Article
• Language: English
• Published: United States 2010
• ISSN: 1079-7114
• DOI: 10.1103/PhysRevLett.105.161801

A search for new heavy particles manifested as resonances in two-jet final states is presented. The data were produced in 7 TeV proton-proton collisions by the LHC and correspond to an integrated luminosity of 315  nb⁻¹ collected by the ATLAS detector. No resonances were observed. Upper limits were set on the product of cross section and signal acceptance for excited-quark (q*) production as a function of q* mass. These exclude at the 95% C.L. the q* mass interval 0.30<m(q*)<1.26  TeV, extending the reach of previous experiments.