Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-04-09
Phys.Lett.B407:250-254,1997
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, no figures. References and footnote added, misprints corrected
Scientific paper
10.1016/S0370-2693(97)00701-6
We discuss an initial condition on the superpotential couplings of an SU(5) theory which allows the R-violating term L d^c Q but avoids the simultaneous presence of L L e^c + d^c d^c u^c. This same condition keeps under control the products of pairs of different couplings lambda_{ijk} L_i d^c_j Q_k, which are more strongly constrained by flavour-changing-neutral-current limits. In our view, this observation makes relatively more plausible the interpretation of the high-Q^2 Hera anomaly, if real, as caused by squark production.
Barbieri Riccardo
Berezhiani Zurab
Strumia Alessandro
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