0000000000177902
AUTHOR
J. Guttmann
showing 2 related works from this author
Testing electromagnetic proton form factors in the annihilation process p+p¯→π0+e−+e+
2011
We study the annihilation channel in proton antiproton collisions with production of a single neutral pion and an electron-positron pair. It is shown that this reaction allows access to the proton electromagnetic form factors in the ‘unphysical’ region and to the difference between complex phases of the Dirac and Pauli proton form factors. The differential cross section is given in the laboratory frame in an experimental setup where all outgoing particles are fully detected.
Theoretical analysis of the pp¯→π0e+e− process within a Regge framework
2013
Abstract We study the annihilation process p p ¯ → 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, p ¯ p → π 0 γ , where data in the energy range of 2.911 GeV ⩽ s ⩽ 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.