Abstract
Inclusive coherent proton diffraction dissociation on helium has been measured in the four-momentum transfer and missing-mass region (, and for incident proton beam momenta from 46 to 400 GeV/c. We find that the differential cross section varies slowly with energy, reveals a pronounced peak at , and at large masses behaves approximately as . The cross section falls exponentially as increases, with a large slope parameter at small momentum transfers and a substantially smaller one at large values, with no clear dip between the two regions as seen in elastic scattering. We compare the experimental distributions to Glauber-model predictions and find the data provide a sensitive test of the assumptions on the details of the elementary proton diffraction-dissociation amplitudes and on the total cross sections of the diffractively produced states.
- Received 17 June 1980
DOI:https://doi.org/10.1103/PhysRevD.23.1911
©1981 American Physical Society