Recent measurements from the H1 and ZEUS experiments at HERA in deep-i
nelastic ep scattering at very high values of the squared 4-momentum t
ransfer Q(2) are discussed and compared to predictions of the Standard
Model. Both experiments observe a large excess of events in neutral c
urrent (NC) scattering, ep --> eX, at values of Q(2) > 15000 GeV2 and
a small excess of events in charged current (CC) scattering, ep --> nu
X. The probability that the observed event rates correspond to a stat
istical fluctuation compatible with the Standard Model cross sections
is about 1% for NC reactions. This observation has driven speculations
about possible physics beyond the Standard Model.