Improved radiative corrections to (e,e{sup '}p) experiments: Explicit treatment of kinematical corrections in multiphoton bremsstrahlung
- GSI Helmholtzzentrum fuer Schwerionenforschung mbH, D-64291 Darmstadt (Germany)
- Departement fuer Physik, Universitaet Basel, CH-4056 Basel (Switzerland)
Radiative processes lead to important corrections to (e,e{sup '}p) experiments. While radiative corrections can be calculated exactly in QED and to a good accuracy also including hadronic corrections, these corrections cannot be included into data analyses to arbitrary orders exactly. Nevertheless consideration of multiphoton bremsstrahlung above the low-energy cutoff is important for many (e,e{sup '}p) experiments. To date, higher-order bremsstrahlung effects concerning electron scattering experiments have been implemented approximately by employing the soft-photon approximation (SPA). In this paper we propose a novel approach to multiphoton emission which partially removes the SPA from (e,e{sup '}p) experiments. In this combined approach one hard photon is treated exactly; and additional (softer) bremsstrahlung photons are taken into account resorting to the soft-photon approximation. This partial removal of the soft-photon approximation is shown to be relevant for the missing-energy distribution for several kinematic settings at MAMI and TJNAF energies.
- OSTI ID:
- 21290061
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 80, Issue 2; Other Information: DOI: 10.1103/PhysRevC.80.024602; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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