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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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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, 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 A°kesson, 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:

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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