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Search for supersymmetry in pp collisions at √s=7TeV in final states with missing transverse momentum and b-jets with the ATLAS detector

Physical Review D - Particles, Fields, Gravitation and Cosmology 85:11 (2012)

Authors:

G Aad, B Abbott, J Abdallah, S Abdel Khalek, AA Abdelalim, A Abdesselam, O Abdinov, B Abi, M Abolins, OS Abouzeid, H Abramowicz, H Abreu, E Acerbi, BS Acharya, L Adamczyk, DL Adams, TN Addy, J Adelman, M Aderholz, S Adomeit, P Adragna, T Adye, S Aefsky, JA Aguilar-Saavedra, M Aharrouche, SP Ahlen, F Ahles, A Ahmad, M Ahsan, G Aielli, T Akdogan, TPA Akesson, G Akimoto, AV Akimov, A Akiyama, 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, M Aliyev, BMM Allbrooke, PP Allport, SE Allwood-Spiers, J Almond, A Aloisio, R Alon, A Alonso, B Alvarez Gonzalez, MG Alviggi, K Amako, P Amaral, C Amelung, VV Ammosov, A Amorim, G Amorós, N Amram, C Anastopoulos, LS Ancu, N Andari, T Andeen, CF Anders, G Anders, KJ Anderson, A Andreazza, V Andrei, ML Andrieux, XS Anduaga, A Angerami, F Anghinolfi, A Anisenkov, N Anjos, A Annovi, A Antonaki, M Antonelli, A Antonov, J Antos, F Anulli, S Aoun, L Aperio Bella, R Apolle, G Arabidze, I Aracena, Y Arai, ATH Arce, S Arfaoui, JF Arguin, E Arik, M Arik, AJ Armbruster

Abstract:

The results of a search for supersymmetry in events with large missing transverse momentum and heavy-flavor jets using an integrated luminosity corresponding to 2.05fb-1 of pp collisions at √s=7TeV recorded with the ATLAS detector at the Large Hadron Collider are reported. No significant excess is observed with respect to the prediction for standard model processes. Results are interpreted in a variety of R-parity conserving models in which scalar bottoms and tops are the only scalar quarks to appear in the gluino decay cascade, and in an SO(10) model framework. Gluino masses up to 600-900GeV are excluded, depending on the model considered. © 2012 CERN. Published by the American Physical Society.
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Measurement of the b-hadron production cross section using decays to D*muX final states in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

ArXiv 1206.3122 (2012)
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Search for lepton flavour violation in the eμ continuum with the ATLAS detector in √s = 7 TeV pp collisions at the LHC

European Physical Journal C 72:6 (2012)

Authors:

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

Abstract:

This paper presents a search for the t-channel exchange of an R-parity violating scalar top quark (t) in the e±μ∓ continuum using 2.1 fb−1 of data collected by the ATLAS detector in √s = 7 TeV pp collisions at the Large Hadron Collider. Data are found to be consistent with the expectation from the Standard Model backgrounds. Limits on R-parity-violating couplings at 95 % C.L. are calculated as a function of the scalar top mass (mt). The upper limits on the production cross section for pp→eμX, through the t-channel exchange of a scalar top quark, ranges from 170 fb for mt = 95 GeV to 30 fb for mt = 1000 GeV.
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A Large Hadron Electron Collider at CERN: Report on the Physics and Design Concepts for Machine and Detector

(2012)

Authors:

JL Abelleira Fernandez, C Adolphsen, AN Akay, H Aksakal, JL Albacete, S Alekhin, P Allport, V Andreev, RB Appleby, E Arikan, N Armesto, G Azuelos, M Bai, D Barber, J Bartels, O Behnke, J Behr, AS Belyaev, I Ben-Zvi, N Bernard, S Bertolucci, S Bettoni, S Biswal, J Blümlein, H Böttcher, A Bogacz, C Bracco, G Brandt, H Braun, S Brodsky, O Brüning, E Bulyak, A Buniatyan, H Burkhardt, IT Cakir, O Cakir, R Calaga, V Cetinkaya, E Ciapala, R Ciftci, AK Ciftci, BA Cole, JC Collins, O Dadoun, J Dainton, A De Roeck, D d'Enterria, A Dudarev, A Eide, R Enberg, E Eroglu, KJ Eskola, L Favart, M Fitterer, S Forte, A Gaddi, P Gambino, H García Morales, T Gehrmann, P Gladkikh, C Glasman, R Godbole, B Goddard, T Greenshaw, A Guffanti, V Guzey, C Gwenlan, T Han, Y Hao, F Haug, W Herr, A Hervé, BJ Holzer, M Ishitsuka, M Jacquet, B Jeanneret, JM Jimenez, JM Jowett, H Jung, H Karadeniz, D Kayran, A Kilic, K Kimura, M Klein, U Klein, T Kluge, F Kocak, M Korostelev, A Kosmicki, P Kostka, H Kowalski, G Kramer, D Kuchler, M Kuze, T Lappi, P Laycock, E Levichev, S Levonian, VN Litvinenko, A Lombardi, J Maeda, C Marquet, SJ Maxfield, B Mellado, KH Mess, A Milanese, S Moch, II Morozov, Y Muttoni, S Myers, S Nandi, Z Nergiz, PR Newman, T Omori, J Osborne, E Paoloni, Y Papaphilippou, C Pascaud, H Paukkunen, E Perez, T Pieloni, E Pilicer, B Pire, R Placakyte, A Polini, V Ptitsyn, Y Pupkov, V Radescu, S Raychaudhuri, L Rinolfi, R Rohini, J Rojo, S Russenschuck, M Sahin, CA Salgado, K Sampei, R Sassot, E Sauvan, U Schneekloth, T Schörner-Sadenius, D Schulte, A Senol, A Seryi, P Sievers, AN Skrinsky, W Smith, H Spiesberger, AM Stasto, M Strikman, M Sullivan, S Sultansoy, YP Sun, B Surrow, L Szymanowski, P Taels, I Tapan, AT Tasci, E Tassi, H Ten Kate, J Terron, H Thiesen, L Thompson, K Tokushuku, R Tomás García, D Tommasini, D Trbojevic, N Tsoupas, J Tuckmantel, S Turkoz, TN Trinh, K Tywoniuk, G Unel, J Urakawa, P VanMechelen, A Variola, R Veness, A Vivoli, P Vobly, J Wagner, R Wallny, S Wallon, G Watt, C Weiss, UA Wiedemann, U Wienands, F Willeke, B-W Xiao, V Yakimenko, AF Zarnecki, Z Zhang, F Zimmermann, R Zlebcik, F Zomer
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Measurement of the WW cross section in √s=7 TeV pp collisions with the ATLAS detector and limits on anomalous gauge couplings

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 712:4-5 (2012) 289-308

Authors:

G Aad, B Abbott, J Abdallah, S Abdel Khalek, AA Abdelalim, A Abdesselam, O Abdinov, B Abi, M Abolins, OS AbouZeid, H Abramowicz, H Abreu, E Acerbi, E Acerbi, BS Acharya, BS Acharya, L Adamczyk, DL Adams, TN Addy, J Adelman, M Aderholz, S Adomeit, P Adragna, T Adye, S Aefsky, JA Aguilar-Saavedra, M Aharrouche, SP Ahlen, F Ahles, A Ahmad, M Ahsan, G Aielli, G Aielli, T Akdogan, TPA Åkesson, G Akimoto, AV Akimov, A Akiyama, MS Alam, MA Alam, J Albert, J Albert, S Albrand, M Aleksa, IN Aleksandrov, F Alessandria, C Alexa, G Alexander, G Alexandre, T Alexopoulos, M Alhroob, M Alhroob, M Aliev, G Alimonti, J Alison, M Aliyev, BMM Allbrooke, PP Allport, SE Allwood-Spiers, J Almond, A Aloisio, A Aloisio, R Alon, A Alonso, B Alvarez Gonzalez, MG Alviggi, MG Alviggi, K Amako, P Amaral, C Amelung, VV Ammosov, A Amorim, G Amorós, N Amram, C Anastopoulos, LS Ancu, N Andari, T Andeen, CF Anders, G Anders, KJ Anderson, A Andreazza, A Andreazza, V Andrei, ML Andrieux, XS Anduaga, A Angerami, F Anghinolfi, A Anisenkov, N Anjos, A Annovi, A Antonaki, M Antonelli, A Antonov, J Antos, F Anulli, S Aoun, L Aperio Bella, R Apolle, G Arabidze

Abstract:

This Letter reports a measurement of the WW production cross section in √s=7 TeV pp collisions using data corresponding to an integrated luminosity of 1.02 fb-1 collected with the ATLAS detector. Using leptonic decays of oppositely charged W bosons, the total measured cross section is σ(pp→WW)=54.4±4.0(stat.)±3.9(syst.)±2.0(lumi.) pb, consistent with the Standard Model prediction of σ(pp→WW)=44.4±2.8 pb. Limits on anomalous electroweak triple-gauge couplings are extracted from a fit to the transverse-momentum distribution of the leading charged lepton in the event. © 2012 CERN.
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