Probing the deuteron structure at small N-N distances by cumulative pion production
Joint Institute for Nuclear Research, 141980, Dubna, Moscow Region, Russia
* e-mail: Alexei.Illarionov@jinr.ru
The fragmentation of deuterons into pions emitted forward in the kinematic region forbidden for free nucleon-nucleon collisions is analyzed. It is shown that the inclusion of the non-nucleonic degrees of freedom in a deuteron results in a satisfactory description of the data for the inclusive pion spectrum and improves the description of the data about T 20. According to the data, T 20 has very small positive values, less than 0.2, which contradicts the theoretical calculations ignoring these degrees of freedom.
© Società Italiana di Fisica and Springer-Verlag, 2003