Eur. Phys. J. C (2006) 45: 193-200
https://doi.org/10.1140/epjc/s2005-02402-y
https://doi.org/10.1140/epjc/s2005-02402-y
Theoretical Physics
How to measure the pomeron phasein diffractive dipion photoproduction
1
Sobolev Institute of Mathematics, Siberian Branch of the Russian Academy of Sciences, Acad. Koptyug avenue, 4, 630090, Novosibirsk, Russia
2
Universitá della Calabria, Dipartimento di Fisica, INFN, Gruppo Collegato di Cosenza, Ponte P. Bucci - cubo 31C, 87036, Arcavacata di Rende (Cosenza), Italy
* e-mail: ginzburg@math.nsc.ru
The study of charge asymmetry of pions in the high-energy process ep → eπ+π- p (γp → π+π- p) at very small dipion momenta offers a method to measure the phase of the forward hadronic (quasi-) elastic amplitude γp → ρp. We estimate the potential of such measurements at HERA.
© Springer-Verlag, 2006
