“…Final states containing both leptons and jets can be used to probe for physics beyond the Standard Model. …”
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“…Standard Model events with prompt, isolated, same-charge high-pT leptons are rare, and therefore events with such final states provide a powerful signature towards new discoveries. …”
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“…Second, the FCNC interactions between the top quark, a gluon and a charm or an up-quark is searched for in events producing a single top-quark decaying leptonically by selecting final states with one lepton, one b-jet and missing transverse momentum. …”
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“…Many beyond the Standard Model signatures predict new particles that decay into final state containing both leptons and jets. This talk will present new search results for massive particles by the ATLAS experiment using the full Run 2 dataset. …”
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“…Many beyond the Standard Model signatures predict new particles that decay into final state containing both leptons and jets. In particular, 3rd generation leptons and quarks can significantly increase the sensitivity to new physics. …”
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“…This search is undertaken using the ATLAS detector between LHC run periods 2015-2018 (LHC Run 2) corresponding to a centre-of-mass energy $\sqrt{s}=13\textrm{ TeV}$ and a total integrated luminosity of $139.0 \textrm{fb}^{-1}$, in particular considering events with no electrons or muons in the final state. Since the supersymmetric particles must be reconstructed from their final-state decay products, efforts were undertaken to constrain the SM backgrounds which produce the same final states, primarily the backgrounds arising from the $t\bar{t}+Z(\to\nu\nu)$ and $Z(\to\nu\nu)+\textrm{jets}$ processes. …”
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“…The results are interpreted also in terms of effective field theory couplings describing the tqH vertex. Finally, 81 fb$^{-1}$ of integrated luminosity are used to search for FCNC via the coupling of a top quark, a photon and an up or charm quark in events with one photon, one lepton (electron or muon), one b-tagged jet and missing transverse momentum.…”
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“…Many beyond the Standard Model signatures predict new physics phenomena that lead to final states containing both leptons and jets. The latest search results for massive particles or lepton flavour violation using the full Run 2 dataset recorded by the ATLAS experiment are presented. …”
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“…These particles are searched for in two different final states (the 2-lepton, 2-jet + $E^{\mathrm{miss}}_{T}$ final state and the 3-lepton + $E^{\mathrm{miss}}_{T}$ final state). …”
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“…We study the sensitivity to longitudinal <math display="inline"><mi>W</mi><mi>V</mi></math> vector boson scattering at the high-luminosity Large Hadron Collider in semi-leptonic final states. While these are characterized by larger background contributions compared to fully leptonic final states, they benefit from a higher signal cross section due to the enhanced branching fraction. …”
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“…Highlights are presented for the most updated and frontier searches for new physics with final states decaying to top quarks in SUSY, Exotics and Dark Matter realm covering ATLAS and CMS results.…”
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“…Past studies have not achieved optimal final emittance values. Therefore, this work aims at gradually cooling the emittance of the muons beam by means of specific absorbers inside very high magnetic fields before it is finally accelerated to several TeV. …”
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“…--HTML-->The most recent results on non-resonant Higgs bosons pairs production in the final state with two bottom quarks and two tau leptons will be presented. …”
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“…The results are based on a sample of $\sqrt{s}=13~\mathrm{TeV}$ proton-proton collisions from the LHC, recorded with the CMS detector~\cite{cms} and corresponding to an integrated luminosity of $137~\mathrm{fb}^{-1}$. The search considers final states with large missing transverse momentum and pairs of hadronically decaying bosons WW, WZ, and WH, which are identified using novel algorithms. …”
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“…It is the first sterile neutrino search in the multilepton final state at the LHC. This final state enables the study of sterile neutrinos in the mass range below 40 GeV, a first at a hadron collider. …”
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“…A search for potential $cc\bar{c}\bar{c}$ tetraquarks decaying into a pair of charmonium states in the four muon final state is performed using proton-proton collision data at $\sqrt{s}=13$ TeV, corresponding to an integrated luminosity of 139 fb$^{-1}$ recorded by the ATLAS experiment at the Large Hadron Collider (LHC). …”
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