Nucleon form factors, B-meson factories and the radiative return
Institute of Physics, University of Silesia, 40007, Katowice, Poland
2 Institut für Theoretische Teilchenphysik, Universität Karlsruhe, 76128, Karlsruhe, Germany
3 Department of Physics, CERN, Theory Division, 1211, Geneva 23, Switzerland
4 Instituto de Física Corpuscular, 46071, Valencia, Spain
* e-mail: firstname.lastname@example.org
The feasibility of a measurement of the electric and magnetic nucleon form factors at B-meson factories through the radiative return is studied. Angular distributions allow for a separation of the contributions from the two form factors. The distributions are presented for the laboratory and the hadronic rest frame, and the advantages of different coordinate systems are investigated. It is demonstrated that Q 2 values up to 8 or even 9 GeV2 are within reach. The Monte Carlo event generator PHOKHARA is extended to nucleon final states, and results are presented which include next-to-leading order radiative corrections from initial-state radiation. The impact of angular cuts on rates and distributions is investigated and the relative importance of radiative corrections is analyzed.
© Springer-Verlag, 2004