Critical basis dependence in bounding R-parity breaking couplings from neutral meson mixing

Abstract

Assuming one nonzero product of two ${\lambda }^{\prime }$-type couplings and working in two different bases for the left-handed quark superfields, the neutral meson mixings are used to bound these products. We emphasize the strong basis dependence of the bounds: in one basis many products contribute to neutral meson mixings at tree level, while in the other these products except one contribute at 1-loop level only and the GIM mechanism takes place. Correspondingly, these bounds differ between bases by orders of magnitudes.

10 pages, two references and some discussion added

References in corpus (1)

• Flavour-Dependent and Basis Independent Measures of R Violation

Cited by in corpus (6)

• R-parity violating supersymmetry
• Phenomenological constraints on broken R parity symmetry in supersymmetry models
• R-parity violation and top quark polarization at the Fermilab Tevatron collider
• Single sneutrino production at hadron colliders
• Single sneutrino production in $\gamma \gamma$ collisions
• Dimension-5 operators in a Gauge Mediated Supersymmetry Breaking Model