Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-04-10
Physics
High Energy Physics
High Energy Physics - Phenomenology
RevTeX 13 pages, 9 figures, in ps format, Submitted to Phys.Rev.D
Scientific paper
The light-cone Hamiltonian, incorporating the nonperturbative dynamics of the $q\bar q$ system connected by the string is solved numerically. The spectrum is shown to coincide with that of the center-of-mass Hamiltonian within the accuracy of computation, displaying the expected degeneracies of the string states, but an overall shift due to different treatment of Z-graphs is obtained. The nonperturbative wave functions are calculated directly from the light-cone Hamiltonian for the first time, thus allowing the explicit estimation of nonperturbative effects in the parton model language. In this way one obtains the string contribution to the parton distributions and in the formfactors and structure functions.
Morgunov V. L.
Shevchenko V. I.
Simonov Yu. A.
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