Implications of a charged-current anomaly at HERA

Details Implications of a charged-current anomaly at HERA Implications of a charged-current anomaly at HERA

1997-05-25

arxiv.org/abs/hep-ph/9705414v3

Phys.Lett. B408 (1997) 261-267

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages Latex. Corrected 3-body decay widths

Scientific paper

10.1016/S0370-2693(97)00766-1

We demonstrate that in the presence of mixing between different scalar leptoquark multiplets it is possible to simultaneously account for the HERA high-$Q^2$ neutral current anomaly, and produce a charged current anomaly of comparable magnitude. The reduced branching ratio to electrons and jets of the lightest leptoquark state results in a significant weakening of the CDF/D0 limits on scalar leptoquarks; masses consistent with the HERA neutral current excess are comfortably within the allowed range. We show that the possibilities for such a successful mixed leptoquark scenario are quite limited, and we investigate some aspects of their phenomenology.

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