Neutral and charged current cross sections at high Q2 at HERA

Neutral and charged current deep inelastic scattering at high Q(2) has been studied with the H1 and ZEUS detectors at HERA. e(+)p data have been collected from 1994 to 1997 corresponding to an integrated luminosity of 37 pb(-1) (H1) and 47.7 pb(-1) (ZEUS). e(-)p preliminary results from 1998/99 are based on an integrated luminosity of 5.6 pb(-1) (H1) and 6.3 pb(-1) (ZEUS). The measured cross sections are in agreement with the Standard Model. A difference in the e(-)p and e(+)p neutral current cross sections at high Q(2) due to gamma Z(0) interference was observed. The propagator mass Mw has been determined in a spacelike region from the Q(2) dependence of the e(+)p charged current cross section.