An inclusive search for anomalous production of two prompt, isolated leptons with the same electric charge is presented. The search is per formed in a data sample corresponding to 4.7 fb − 1 of integrated luminosity collected in 2011 at √ s = 7TeV with the ATLAS detector at the LHC. Pairs of leptons ( e ± e ± , e ± μ ± , and μ ± μ ± ) with large transverse momentum are selected, and the dilepton invaria nt mass distribution is examined for any deviation from the Standard Model expectation. No ex cess is found, and upper limits on the production cross section of like-sign lepton p airs from physics processes beyond the Standard Model are placed as a function of the dilepton in variant mass within a fiducial region close to the experimental selection criteria. The 95 % confidence level upper limits on the cross section of anomalous e ± e ± , e ± μ ± , or μ ± μ ± production range between 1.7fb and 64fb depending on the dilepton mass and flavour combinati on.

G. Aad, T. Abajyan, B. Abbott, J. Abdallah, S. Abdel Khalek, A. A. Abdelalim, et al. (2012). Search for anomalous production of prompt like-sign lepton pairs at $ \sqrt{s}=7\;\mathrm{TeV} $ with the ATLAS detector. JOURNAL OF HIGH ENERGY PHYSICS, 2012, 7-1-7-41 [10.1007/JHEP12(2012)007].

Search for anomalous production of prompt like-sign lepton pairs at $ \sqrt{s}=7\;\mathrm{TeV} $ with the ATLAS detector

BELLAGAMBA, LORENZO;BERTIN, ANTONIO;BOSCHERINI, DAVIDE;BRUNI, ALESSIA;BRUNI, GRAZIANO;CAFORIO, DAVIDE;DE CASTRO, STEFANO;DI SIPIO, RICCARDO;FABBRI, LAURA;FRANCHINI, MATTEO;GIACOBBE, BENEDETTO;MASSA, IGNAZIO GIACOMO;MENGARELLI, ALBERTO;MONZANI, SIMONE;PICCININI, MAURIZIO;RINALDI, LORENZO;ROMANO, MARINO;SBARRA, CARLA;SBRIZZI, ANTONIO;SEMPRINI CESARI, NICOLA;SPIGHI, ROBERTO;VALENTINETTI, SARA;VILLA, MAURO;I. Vivarelli;ZOCCOLI, ANTONIO;
2012

Abstract

An inclusive search for anomalous production of two prompt, isolated leptons with the same electric charge is presented. The search is per formed in a data sample corresponding to 4.7 fb − 1 of integrated luminosity collected in 2011 at √ s = 7TeV with the ATLAS detector at the LHC. Pairs of leptons ( e ± e ± , e ± μ ± , and μ ± μ ± ) with large transverse momentum are selected, and the dilepton invaria nt mass distribution is examined for any deviation from the Standard Model expectation. No ex cess is found, and upper limits on the production cross section of like-sign lepton p airs from physics processes beyond the Standard Model are placed as a function of the dilepton in variant mass within a fiducial region close to the experimental selection criteria. The 95 % confidence level upper limits on the cross section of anomalous e ± e ± , e ± μ ± , or μ ± μ ± production range between 1.7fb and 64fb depending on the dilepton mass and flavour combinati on.
2012
G. Aad, T. Abajyan, B. Abbott, J. Abdallah, S. Abdel Khalek, A. A. Abdelalim, et al. (2012). Search for anomalous production of prompt like-sign lepton pairs at $ \sqrt{s}=7\;\mathrm{TeV} $ with the ATLAS detector. JOURNAL OF HIGH ENERGY PHYSICS, 2012, 7-1-7-41 [10.1007/JHEP12(2012)007].
G. Aad;T. Abajyan;B. Abbott;J. Abdallah;S. Abdel Khalek;A. A. Abdelalim;O. Abdinov;R. Aben;B. Abi;M. Abolins;O. S. AbouZeid;H. Abramowicz;H. Abreu;E. ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/142476
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