How to measure the Pomeron phase in diffractive dipion photoproduction
High Energy Physics - Phenomenology
2009-01-07 v4 High Energy Physics - Experiment
Abstract
The study of charge asymmetry of pions in the high-energy process gamma p -> pi+ pi- p (e p -> e pi+ pi- p) at very small dipion momenta offers a method to measure the phase of the forward hadronic (quasi)elastic amplitude gamma p -> rho p. We estimate potential of such measurements at HERA.
Cite
@article{arxiv.hep-ph/0401180,
title = {How to measure the Pomeron phase in diffractive dipion photoproduction},
author = {I. F. Ginzburg and I. P. Ivanov},
journal= {arXiv preprint arXiv:hep-ph/0401180},
year = {2009}
}
Comments
12 pages, 2 figures; v4: more elaborate parametrizations of dipion spectra implemented, discussion extended