TY  - JOUR
T1  - Search for light scalar top-quark pair production in final states with two leptons with the ATLAS detector in √s=7 TeV proton–proton collisions
JF  - The European Physical Journal C
N2  - A search is presented for the pair production of light scalar top quarks in √s=7 TeV proton–proton collisions recorded with the ATLAS detector at the Large Hadron Collider. This analysis uses the full data sample collected during 2011 running that corresponds to a total integrated luminosity of 4.7 fb\(^{−1}\). Light scalar top quarks are searched for in events with two opposite-sign leptons (e, μ), large missing transverse momentum and at least one jet in the final state. No excess over Standard Model expectations is found, and the results are interpreted under the assumption that the light scalar top decays to a b-quark in addition to an on-shell chargino whose decay occurs through a virtual W boson. If the chargino mass is 106 GeV, light scalar top-quark masses up to 130 GeV are excluded for neutralino masses below 70 GeV.
KW  - signal cross section
KW  - jet energy scale
KW  - jet energy scale uncertainty
KW  - dead region
KW  - jet energy resolution
KW  - top quark pair
KW  - charingo mass
KW  - top quark decay
KW  - SM background
KW  - simulaed event sample
KW  - MC simulation
KW  - visible cross section
KW  - anti-k jet
KW  - top event dilepton invariant mass
Y1  - 2012
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-129561
VL  - 72
IS  - 2237
ER  -