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Quasiexclusive neutral meson production in pN-interactions is studied in experiments with the SPHINX facility operating in a proton beam from the IHEP accelerator (Ep=70 GeV). The cross sections and the parameters of the differential distributions for πo, ω, η and Ko production in the deep fragmentation region (xF > 0.79 ÷ 0.86) are presented. The results show that such proton quasiexclusive reactions with baryon exchange may be promising in searches for exotic mesons.
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The dsig/dpt**2 distribution was approximated by the expression: dsig /dpt**2 = CONST(C=1)*SLOPE(C=1)*EXP(-SLOPE(C1)*PT**2) + CONST(C=2)*SLOPE(C=2)* EXP(-SLOPE(C2)*PT**2).