Study of diffraction dissociation in 19- and 28-GeV/cpdinteractions
- 1 August 1975
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 12 (3), 673-680
- https://doi.org/10.1103/physrevd.12.673
Abstract
The reaction is studied at 19 and 28 GeV/c with data from the Brookhaven National Laboratory 80-in. deuterium-filled bubble chamber. In addition, a separate study is made of the low-momentum pion spectra in selected low-multiplicity events presumed to be associated with either of two isospin-conjugate modes of deuteron fragmentation by a 28-GeV/c beam proton. Our results from these complementary studies are that low-multiplicity channels are dominantly of a diffractive nature; however, significant differences seen in the mass spectra and angular correlations in the slow between the 19- and 28-GeV/c data indicate that asymptotic behavior has not been reached, as least at 19 GeV/c. Neither - nor -channel helicity conservation is seen in the excitation of the target neutron into a low-mass system. The of missing-mass experiments is shown to be a superposition of nucleon-pion and nucleon-two-pion states.
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