1112.4828 (ATLAS Collaboration)

Search for first generation scalar leptoquarks in pp collisions at
sqrt(s)=7 TeV with the ATLAS detector    [PDF]

ATLAS Collaboration

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
sqrt(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).

View original: http://arxiv.org/abs/1112.4828