Cross sections and electromagnetic response functions for radiative proton capture in

Autor: Hans Wilschut, A.Y. Korchin, J. G. Messchendorp, R.S. Simon, Herbert Löhner, R.W. Ostendorf, H. Huisman, M. Hoefman, Olaf Scholten, van Marc-Jan Goethem, Mohsen Harakeh, Nasser Kalantar-Nayestanaki, M. Volkerts, J. C. S. Bacelar, S. Schadmand
Rok vydání: 2000
Předmět:
Zdroj: Physics Letters B. 481:171-176
ISSN: 0370-2693
Popis: Exclusive differential cross sections of virtual-photon radiative proton capture in pd→ 3 He +e + e − at a proton energy of 190 MeV have been measured for the first time. The leptonic-angle dependence of the measured cross section is exploited in order to determine the electromagnetic response functions in the time-like region. The data are compared to a relativistic gauge-invariant impulse approximation and a Faddeev calculation. Differences between theoretical predictions and data are discussed in terms of enhanced magnetic radiation possibly originating from virtual Δ excitations.
Databáze: OpenAIRE