Conveners
BSM II
- Ljiljana Morvaj (CERN)
Third-generation leptoquarks are considered the most viable particles that explain anomalous ratios of decays to different lepton flavors seen in B decays. In this talk, we present several recent results, including a new search for leptoquark pair production, as well as single-leptoquark and t-channel production for leptoquarks that couple strongly to third-generation particles.
We present the search for heavy resonances decaying to a pair of bosons, WZ or ZZ, where one Z decays to a pair of neutrinos, and the other W or Z boson decays to a merged jet due to the boost. At the LHC these resonances can be produced through quark/anti-quark annihilation, gluon-gluon fusion, or weak vector boson fusion (VBF) processes. Tagging techniques for both forward jets produced in...
We present a summary of searches for new heavy resonances decaying into pairs or triplets of bosons, performed on proton-proton collision data collected with the CMS detector at the CERN LHC at a center-of-mass energy of 13 TeV. A common feature of these analyses is the boosted topology, namely the decay products of the considered bosons (both electroweak W, Z bosons and the Higgs boson) are...
We discuss new bounds on vectors coupled to currents whose non-conservation is due to mass terms, such as $U(1)_{L_\mu - L_\tau}$. In scenarios with Stueckelberg masses for such gauge bosons, due to the emission of many final state longitudinally polarized gauge bosons, inclusive rates grow exponentially fast in energy, leading to strong constraints. We present bounds coming from the high...
Though collider searches are constraining supersymmetric parameter space, generic model independent bounds on sneutrinos remain very low. We calculate new model independent lower bounds on general supersymmetric scenarios with sneutrino LSP and NLSPs. By recasting ATLAS LHC exotic searches in mono boson channels, we place an upper bound on the cross section on...
We present a study of the production of a single top quark in association with a
heavy extra Z′ at hadron colliders in new physics models with and without flavor-changing neutral-current (FCNC) couplings. We use QCD soft-gluon resummation and threshold expansions to calculate higher-order corrections for the total cross section and transverse-momentum distributions for tZ′ production. The...
We present an overview of searches for new physics with top and bottom quarks in the final state, using proton-proton collision data collected with the CMS detector at the CERN LHC at a center-of-mass energy of 13 TeV. The results cover non-SUSY based extensions of the SM, including heavy gauge bosons or excited third generation quarks. Decay channels to vector-like top partner quarks are also...
Many extensions to the Standard Model predicts new particles decaying into two bosons (W, Z, photon, or Higgs bosons) making these important signatures in the search for new physics. Searches for such diboson resonances have been performed in final states with different numbers of leptons, photons, as well as jets and b-jets where new jet substructure techniques are used to disentangle the...
Searches for new physics in events with jets in the final state in CMS
