Abstract
The total cross section for η production in deuteron-deuteron interactions has been measured at four different kinetic energies, from 0.7 MeV to 3.7 MeV above threshold. The squared amplitude is consistent with a constant value of ‖f=(24.6±1.2±1.7) nb/sr close to threshold (14<<40 MeV/c). Assuming that the -η mixing reaction mechanism is dominant, this result allows a prediction of (dσ/dΩ=(8.3±0.5 ±0.6) pb/sr for the cross section of the isospin-forbidden reaction d+d→α+ at the η-threshold energy.
DOI:https://doi.org/10.1103/PhysRevC.50.R537
©1994 American Physical Society