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How to measure the Pomeron phase in diffractive dipion photoproduction

I. F. Ginzburg·I. P. Ivanov
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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.

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I. F. Ginzburg, I. P. Ivanov. 2005-08-01. How to measure the Pomeron phase in diffractive dipion photoproduction. https://doi.org/10.1140/epjc%2Fs2005-02402-y

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