Comments on the high-$Q^2$ HERA anomaly

Details Comments on the high-$Q^2$ HERA anomaly Comments on the high-$Q^2$ HERA anomaly

1997-03-12

arxiv.org/abs/hep-ph/9703299v1

Phys.Lett. B402 (1997) 367-373

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages Latex with 1 EPSF figure

Scientific paper

10.1016/S0370-2693(97)00371-7

Taking the reported high-Q^2 anomaly at HERA as a signal of new physics, we show that several independent considerations point towards s-channel leptoquark production as the most attractive interpretation. We argue that even this option is highly constrained by flavor-changing processes: the couplings must be accurately diagonal in the quark and lepton mass eigenstate basis and should preserve individual quark and lepton family numbers. We propose a dynamical mechanism that might produce this pattern; it has distinctive experimental consequences.

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