Event generator analysis for singly strange particle production data
- CCAST, World Laboratory, P.O. Box 8730 Beijing (China)
- China Institute of Atomic Energy, P.O. Box 275, Beijing, 102413 (China)
- Institute of Theoretical Physics, Academia Sinica, Beijing (China)
- Institute of High Energy Physics, Academia Sinica, P.O. Box 918, Beijing, 100039 (China)
We have used the event generator LUCIAE to analyze the data of singly strange particle production in pp, pA, and AA reactions at 200A GeV and compared them with the corresponding experimental data and theoretical results of HIJING, VENUS, and RQMD. The results indicate that for reproducing the NA35 data of AA reactions it requires a somewhat larger s quark suppression factor (s=0.3) and shorter formation time ({tau}=1 fm/c) of produced particles than for reproducing the experimental data of pp and pA (s=0.2 and {tau}=1.5 fm/c). This might be understood intuitively from the relationship between the effective string tension and the violence of collision. However, the NA36 data of the negative multiplicity dependence of {Lambda} in S + Pb reaction at 200 A GeV could not be well reproduced by LUCIAE, VENUS, or RQMD, and the NA36 data prefers model parameters of s=0.2 and {tau}=1.5 fm/c especially, this seems hard to understand and needs further studies. From comparing the NA35 data of the rapidity distribution of {Lambda} in S + Ag reactions to the corresponding results of LUCIAE one knows that the effect of varying the s quark suppression factor from 0.2 to 0.3 is smaller than the effect of rescattering with respect to strangeness production. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 543580
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 4 Vol. 55; ISSN PRVCAN; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
Similar Records
Strangeness production in S + Pb and p + Pb collisions at 200 GeV/c per nucleon
Strangeness production in S + Pb and p + Pb collisions at 200 GeV/c per nucleon