Speaker
Description
An analysis is presented of events containing jets including at
least one btagged jet, sizable missing transverse momentum, and at
least two charged leptons including a pair of the same electric
charge, with the scalar sum of the jet and lepton transverse momenta
being large. Standard Model processes rarely produce these final
states, but several models of physics beyond the Standard Model
predict an enhanced production rate of such events. Specific models
with this feature are considered here: vectorlike T ,B, and T5/3
quark pair production, and fourtopquark production under three
scenarios (Standard Model, contact interaction, and extra
dimensions). A data sample of 3.2 fb−1 of pp collisions at a center‐
ofmass energy of √s=13 TeV recorded by the ATLAS detector at the
Large Hadron Collider is used in this analysis. Several signal
regions are defined, in which the consistency between the data yield
and the backgroundonly hypothesis is checked, and 95% confidence
level limits are set on various signal models.
