Research Papers in Physics and Astronomy


Date of this Version

October 2001


Published by American Physical Society. Phys. Rev. Lett. 87, 141802 (2001). Copyright © 2001 American Physical Society. Permission to use.


We present results from a measurement of double diffraction dissociation in p̅p collisions at the Fermilab Tevatron collider. The production cross section for events with a central pseudorapidity gap of width Δη0 > 3 (overlapping η=0) is found to be 4.43±0.02(stat) ± 1.18(syst) mb [3.42 ± 0.01(stat) ± 1.09(syst) mb] at √s=1800[630] GeV. Our results are compared with previous measurements and with predictions based on Regge theory and factorization.

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