摘要
The explanation of a 200 GeV (Formula presented)-parity violating squark to the DESY HERA high-(Formula presented) anomaly would have an important impact on supersymmetry-breaking models. Here we show that a squark of mass around 200 GeV is disallowed in the minimal gauge-mediated SUSY-breaking models in the parameter space constrained by the radiative electroweak-symmetry breaking and the experimental lower limits on supersymmetric particles, even after including the large (Formula presented)-parity violating couplings. Supergravity-motivated models can, on the other hand, give rise to these scalar quarks in a wide range of parameter space. © 1998 The American Physical Society.