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arXiv · 1210.3290

Theoretical Analysis of the $p \bar{p}\rightarrow π^0 e^+ e^-$ Process within a Regge Framework

J. Guttmann·M. Vanderhaeghen
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Abstract

We study the annihilation process $p\bar{p} \to π^0 e^+ e^-$ within a Regge framework, as a means to provide constraints on timelike nucleon form factors. We present results for the $e^+e^-$ angular distributions and the differential cross sections in kinematics which will be accessible by PANDA@FAIR. To check the consistency of the model, we first test the approach on the process of real photon production, $\bar{p} p \to π^0 γ$, where data in the energy range of 2.911 GeV$\leq\sqrt{s} \leq 3.686$ GeV exist. We find that a Regge pole model is able to well reproduce the available data. The analysis is then extended to a timelike virtual photon in the final state.

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J. Guttmann, M. Vanderhaeghen. 2013-03-08. Theoretical Analysis of the $p \bar{p}\rightarrow π^0 e^+ e^-$ Process within a Regge Framework. https://doi.org/10.1016/j.physletb.2013.01.004

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