Colour rope formation and strange baryon production in ultrarelativistic heavy ion collisions
Abstract
Enhanced strangenees production in recent experiments with S projectiles on different targets at a beam energy of 200 A GeV has been reported by several experimental groups (NA35, WA85, NA34). Here we consider that elementary triplet colour charges which are excited in the initial stage of a nucleus-nucleus collision may combine forming highly “ropes”. The colour ropes decay by quark-antiquark pair creation creation screening the initial field. We implemented the generated and decay of ropes into a new version of the Monte Carlo program RQMD which is based on string excitation in ultrarelativistic nucleus-nucleus collisions. We find that all measured strange particle yields in S+S can be quantitatively understood employing the rope mechanism in addition to hadronic rescattering.
- Publication:
-
Physics Letters B
- Pub Date:
- September 1992
- DOI:
- 10.1016/0370-2693(92)91353-B
- Bibcode:
- 1992PhLB..289....6S