A Collective Breaking of R-Parity

Understand

Supersymmetric theories with an R-parity generally yield a striking missing energy signature, with cascade decays concluding in a neutralino that escapes the detector.

• In theories where R-parity is broken the missing energy is replaced with additional jets or leptons, often making traditional search strategies ineffective.
• Such R-parity violation is very constrained, however, by resulting B and L violating signals, requiring couplings so small that LSPs will decay outside the detector in all but a few scenarios.
• In theories with additional matter fields, R-parity can be broken collectively, such that R-parity is not broken by any single coupling, but only by an ensemble of couplings.