Nonlinearities and Pomeron Nonfactorizability in Conventional Diffraction
摘要
Alternatives for describing the nonlinear behavior of the first diffraction cone in differential and elastic cross-section are investigated. High quality fits to the data are presented. We show that the presence in the Pomeron amplitude of two terms with different dependences is strongly suggested by the data, hinting at a non-factorizable Pomeron even in the field of purely hadronic reactions. The available data, however, do no allow to choose among a nonlinearity in the residues or in the Pomeron trajectory or in both. In all cases, we find an effective slope of the trajectory larger than the one currently used. A nonlinear trajectory with the fitted parameters is used for predicting the mass and the width of the 2 glueball. An excellent agreement is found with the X(1900) candidate from the WA91 experiment.
引用
@article{arxiv.hep-ph/9704404,
title = {Nonlinearities and Pomeron Nonfactorizability in Conventional Diffraction},
author = {P. Desgrolard and A. I. Lengyel and E. S. Martynov},
journal= {arXiv preprint arXiv:hep-ph/9704404},
year = {2016}
}
备注
Plain TeX, 24 pages, 6 eps figures, to be published in Nuovo Cimento