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Physics Letters B
The production of pions emitted backward in inelastic neutrino-nucleus interactions is analyzed within the impulse approximation in the framework of the dual parton model. We focus on the Q^2-dependence of the multiplicity of negative pions, normalized to the total cross section of the reaction ν + A →μ + X. The inclusion of planar (one-Reggeon exchange) and cylindrical (one-Pomeron exchange) graphs leads to a multiplicity that decreases as Q^2 increases, in agreement with recent measurementsdoi:10.1016/s0370-2693(02)01164-4 fatcat:62ayubgwe5cerl3s4lw4sgbouq