Search for first generation scalar leptoquarks in pp collisions at root s=7 TeV with the ATLAS detector
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Search for first generation scalar leptoquarks in pp collisions at root s=7 TeV with the ATLAS detector

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Search for first generation scalar leptoquarks in pp collisions at root s=7 TeV with the ATLAS detector

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ATLAS Collaboration; Mitsou, Vasiliki; Fuster Verdú, Juan A. Perfil; Ferrer Soria, Antonio Perfil; Castillo Giménez, María Victoria Perfil; Cabrera Urbán, Susana Perfil; García García, Carmen Perfil; Higón Rodríguez, Emilio Perfil; Martí García, Salvador; Ros Martínez, Eduardo; González de la Hoz, Santiago; Salt Cairols, José Perfil; Valls Ferrer, Juan Antonio; Hernández Jiménez, Yesenia; Kaci, Mohammed; Fiorini, Luca; Lacasta Llácer, Carlos
Aquest document és un/a article, creat/da en: 2012

Este documento está disponible también en : http://dx.doi.org/10.1016/j.physletb.2012.02.004
We report a search for first generation scalar leptoquarks using 1.03 fb(-1) of proton-proton collisions data produced by the Large Hadron Collider at root s = 7 TeV and recorded by the ATLAS experiment. Leptoquarks are sought via their decay into an electron or neutrino and a quark, producing events with two oppositely charged electrons and at least two jets, or events with an electron, missing transverse momentum and at least two jets. Control data samples are used to validate background predictions from Monte Carlo simulation. In the signal region, the observed event yields are consistent with the background expectations. We exclude at 95% confidence level the production of first generation scalar leptoquark with masses m(LQ) < 660 (607) GeV when assuming the branching fraction of a leptoquark to a charged lepton is equal to 1.0 (0.5).

    ATLAS Collaboration Mitsou, Vasiliki Fuster Verdu, Juan A. Ferrer Soria, Antonio Castillo Giménez, María Victoria Cabrera Urbán, Susana García García, Carmen Higón rodríguez, Emilio Martí García, Salvador Ros Martínez, Eduardo González de la Hoz, Santiago Salt Cairols, José Valls Ferrer, Juan Antonio Hernández Jiménez, Y. Kaci, Mohammed Fiorini, Luca Lacasta Llácer, Carlos 2012 Search for first generation scalar leptoquarks in pp collisions at root s=7 TeV with the ATLAS detector Physics Letters B 709 3 158 176
http://dx.doi.org/10.1016/j.physletb.2012.02.004
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