Search for dijet resonances in events with an isolated charged lepton using $$ \sqrt{s} $$ = 13 TeV proton-proton collision data collected by the ATLAS detector

Abstract

Search for dijet resonances in events with an isolated charged lepton using √ s = 13 TeV proton-proton collision data collected by the ATLAS detector The ATLAS collaboration

Searching for the Higgsino-Bino sector at the LHC

“…In the case of the charged Higgs the bounds become weak in the region of parameters we are considering, as can be seen from the results of ref. [114]. For instance, for tan β = 0.5 the mass of the charged Higgs should satisfy m H ± > 1.2 TeV, while for tan β = 1 there are no constraints for m H ± .…”

Model-Independent Searches for New Physics in Multi-Body Invariant Masses

“…Let us consider several event topologies that have a special property for modelindependent BSM searches: such events might be difficult to observe in two-body decays, but many-body decays can exhibit signals that can be detected through observations. To be more concrete, let us consider a cascade decay of a heavy particle A into two other particles B and C. Such decays are typical for the diboson production (for a recent review, see [16]). The most popular channel in experimental searches is when B and C are known bosons (W, Z or H, on-shell or off-shell).…”

Model-independent searches for new physics in multi-body invariant masses

“…Searches involving jets and a lepton in the final state that can originate from the cascade decays shown in Fig. 1 was recently studied [17] by ATLAS using a modelindependent approach by triggering on leptons (electrons or muons), and by performing searches in invariant masses, m jj , of two jets. A limitation for such an approach is the width of the heavy particle B: if Γ/m > 0.2, the studies show a small sensitivity to such broad states since such deviations are almost undistinguished from the background hypothesis.…”