Abstract
Single diffraction dissociation was measured in the reaction p¯p→p¯X at the centre-of-mass energy √s = 546 GeV. The mass M of the system X was deduced from the pseudorapidity distribution of the observed charged tracks. The cross section of single diffraction dissociation for M2/s⩽0.05isσsd=9.4 ± 0.7 mb. Comparison to the ISR data shows that σsd increases with energy less fast than the total and the elastic cross sections.
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