D. Barberis et al., A STUDY OF PSEUDOSCALAR STATES PRODUCED CENTRALLY IN PP INTERACTIONS AT 450 GEV C/, Physics letters. Section B, 427(3-4), 1998, pp. 398-402
A study has been made of pseudoscalar mesons produced centrally in pp
interactions. The results show that the eta and eta' appear to have a
similar production mechanism which differs from that of the pi(0). The
production properties of the eta and eta' are not consistent with wha
t is expected from double Porneron exchange. In addition the productio
n mechanism for the eta and eta' is such that the production cross sec
tion are greatest when the azimuthal angle between the p(T) vectors of
the two protons is 90 degrees. (C) 1998 Published by Elsevier Science
B.V. All rights reserved.