A study of the proton momentum spectrum from deuteron fragmentation at 8.9 GeV/c and an estimate of admixture parameters for the six-quark state in the deuteron

Quark model correction to the deuteron wave function

“…(iv) The asymptotic ratio t/ of the D to S component of the configuration space deuteron wave function is measurable and has been determined from the tensor analyzing power of sub-Coulomb deuteron scattering from 2~ Experimentally [6] r/=0.0264_+0.0003, Paris wave function yields t/ =0.0261, but the modified Paris wave function with six-quark correction obtained in [2] upsets the agreement with experiment giving t/= 0.0249.…”

“…Hamada-Johnston [3], Reid E4], or Paris [5]. Ableev et al [2] ascribe this discrepancy to the short range part of the NN interaction where the six-quark dynamics is believed to become important and what may not have been adequately accounted for by the phenomenological core necessarily present in all meson-exchange potentials. In order to explore the six-quark effects in [-2] the s-wave component of the Paris wave function was supplemented by a phenomenological additive correction of a Gaussian shape to simulate the s 6 state of six quarks.…”

“…Finally, there is also the extremely difficult problem of relativistic corrections which for large momenta may lead to systematic errors in extracting [ff/(k)[ 2 from the inclusive cross sections 9 It should be kept in mind that Fig. 1 actually serves also for testing purposes of the relativization procedure applied in [2], i.e. the way in which the nonrelativistic wave function has been pluged in a relativistic calculation.…”

“…In order to explore the six-quark effects in [-2] the s-wave component of the Paris wave function was supplemented by a phenomenological additive correction of a Gaussian shape to simulate the s 6 state of six quarks. The unknown amplitude and phase of the added quark component and the oscillator width have been fitted to the experimental data from [2]. The fit is quite good but the model itself does not appear to be well grounded theoretically for the following reasons.…”

Sensitivity of cross section andT 20 to secondary interactions in the reaction indp ? ppn at medium energies

“…Throughout this paper, we use the notation 'cumulative' particle in the sense, that the particle is fixed in the kinematical region that is forbidden in NN collisions. The investigation of the inclusive differential proton cross section and the tensor asymmetry T20 was performed in the high energy experiment [1,2] up to the kinematical limit of the 0 ~ proton emission. Measured cumulative protons were produced in the collision of the deuteron beam with ~2C or protons.…”