We have measured all deuteron analyzing powers Ayd, Ayy, Axx, Axz for deuteron-proton elastic scattering at 294 MeV/nucleon in order to study the properties of three nucleon forces (3 NFs). Measurement was made at in an angular range of θc.m. = 35.6°-163.0°. Obtained data were compared with Faddeev calculations with and without the 3 NFs. At θc.m. ≲ 120° all the data have general agreement with the calculations, while the measured data at θc.m. ≳ 120° are not explained by any theoretical calculations. These results were consistent with those at 250 MeV/nucleon.
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