A NEW CONSTRAINTS SEPARATION FOR THE ORIGINAL D=10 MASSLESS SUPERPARTICLE
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We study the problem of covariant separation between first and second class constraints for the D = 10 Brink-Schwarz superparticle. Opposite to the supersymmetric light-cone frame separation, we show here that there is a Lorentz covariant way to identify the second class constraints such that, however, supersymmetry is broken. Consequences for the D = 10 superstring are briefly discussed.