Title of article :
ϒ absorption in hadronic matter
Author/Authors :
Ziwei Lin، نويسنده , , C.M. Ko، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2001
Abstract :
The cross sections of ϒ absorption by π and ρ mesons are evaluated in a meson-exchange model. Including form factors with a cutoff parameter of 1 or 2 GeV, we find that due to the large threshold of these reactions the thermal average of their cross sections is only about 0.2 mb at a temperature of 150 MeV. Our results thus suggest that the absorption of directly produced ϒ by hadronic comovers in high energy heavy ion collisions is unimportant.
Journal title :
PHYSICS LETTERS B
Journal title :
PHYSICS LETTERS B