arXiv subjects

J"org Hansper

Publications and source records attributed to J"org Hansper.

2 recordsLinked to original sources

arXiv1996

A Haplousterotic Model for the Nucleon Wave Function

We review the consequences of the sensitivity of the relation between the moments of a model for the nucleon quark distribution amplitude and the coefficients of its polynomial expansion. Criteria for a simpler approach to constructing a model for the quark distribution amplitude are formulated. We describe how such a simpler (or "haplousterotic") model for the quark distribution amplitude of the nucleon is obtained from the QCD sum-rule moments of COZ.

hep-ph↗

arXiv1995

A Haplousterotic Model for the Nucleon Quark Distribution Amplitude

Using the criteria of simplicity, positivity, smoothness and process- independence of construction, we find a non-polynomial model for the quark distribution amplitude of the nucleon that is in agreement with QCD sum-rule constraints. This simpler ("haplousterotic") model solves some of the problems connected with the longitudinal momentum dependence of the wave function, whereas the k_T-dependence of the wave function, which is also important, is still left undetermined. The expansion pro- perties of the model into a polynomial series are examined.

hep-ph↗