IMPLICATIONS OF A CHARGED-CURRENT ANOMALY AT HERA

We demonstrate that in the presence of mixing between different scalar leptoquark multiplets it is possible to simultaneously account for th e HERA high-Q(2) neutral current anomaly, and produce a charged curren t anomaly of comparable magnitude, The reduced branching ratio to elec trons and jets of the lightest leptoquark state results in a significa nt weakening of the CDF/D0 limits on scalar leptoquarks; masses consis tent with the HERA neutral current excess are comfortably within the a llowed range, We show that the possibilities for such a successful mix ed leptoquark scenario are quite limited, and we investigate some aspe cts of their phenomenology. (C) 1997 Elsevier Science B.V.