Constraining baryon number violation at the LHC

There is strong theoretical motivation as well as experimental evidence for baryon number (B) conservation to be violated in nature. It is, for example, one of the Sakharov conditions for baryogenesis in the early universe. In most SUSY models considered in collider searches to date, the conservation of R-parity (RP) is imposed to prevent the proton decay. The proton decay, however, involves simultaneous violation of baryon and lepton number and therefore RP-violating (RPV) SUSY models that allow only baryon number changing processes are not excluded based on the proton lifetime. Typical collider signatures would be events with a large number of jets. In this talk, possibilities of constraining B-violating processes by re-interpreting LHC measurements of different multi-jet final states in a simplified RPV SUSY model are discussed. Limits are derived in the plane of the two free mass parameters of the model and used to infer bounds on the RPV coupling strength parameters. The relevance of this work for the proposed search for neutron-antineutron oscillations (ΔB=2) at the European Spallation Source are also discussed.