Constraints on R–parity violating couplings from LEP/SLD hadronic observables

Constraints on R–parity violating couplings from CERN LEP and SLAC SLD hadronic observables

We analyze the one loop corrections to hadronic Z decays in an R–parity violating extension to the Minimal Supersymmetric Standard Model (MSSM). Performing a global fit to all the hadronic observables at the Z–peak, we obtain stringent constraints on the R–violating coupling constants λ and λ. The presence of these couplings worsens the agreement with the data relative to the Standard Model. Th...

R-parity-Violating Supersymmetric Yukawa Couplings: A Mini-review

I review the bounds on the R-parity-violating supersymmetric Yukawa couplings from the considerations of proton stability, n–n̄ oscillation, νe-Majorana mass, neutrino-less double β decay, charged-current universality, e–μ–τ universality, νμ–e scattering, atomic parity violation, νμ deep-inelastic scattering, K -decays, τ -decays, Ddecays and from the precision LEP electroweak observables. I als...

Constraints on R–parity Violation from Precision Electroweak Measurements

Precision electroweak measurements provide a window to physics beyond the Standard Model by constraining the size of radiative corrections from new particles and interactions. In this contribution, we summarize the constraints from the LEP and SLD data on an R–parity violating extension to the MSSM. Details are presented in Ref. 1. We extend the MSSM with the addition of the the following terms...

Lep- and Low-energy Bounds on R-parity-violating Supersymmetric Yukawa Couplings

Hadronic Parity Violation: an Analytic Approach

Using a recent reformulation of the analysis of nuclear parity-violation (PV) using the framework of effective field theory (EFT), we show how predictions for parity-violating observables in low energy light hadronic systems can be understood in an analytic fashion. It is hoped that such an analytic approach may encourage additional experimental work as well as add to the understanding of such ...