Strangeness Production in Ultrarelativistic Nucleus-Nucleus Collisions
LONG Jia-Li1,2, HE Ze-Jun1,3,4, MA Yu-Gang1,3,4, MA Guo-Liang1,2
1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, PO Box 800-204, Shanghai 201800
2Graduate School, Chinese Academy of Sciences, Beijing 100039
3Research Center of Nuclear Theory of National Laboratory of Heavy Ion Accelerator, Institute of 4Modern Physics, Chinese Academy of Sciences, Lanzhou 730000
CCAST (World Laboratory), PO Box 8730, Beijing 100080
Strangeness Production in Ultrarelativistic Nucleus-Nucleus Collisions
LONG Jia-Li1,2;HE Ze-Jun1,3,4;MA Yu-Gang1,3,4;MA Guo-Liang1,2
1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, PO Box 800-204, Shanghai 201800
2Graduate School, Chinese Academy of Sciences, Beijing 100039
3Research Center of Nuclear Theory of National Laboratory of Heavy Ion Accelerator, Institute of 4Modern Physics, Chinese Academy of Sciences, Lanzhou 730000
CCAST (World Laboratory), PO Box 8730, Beijing 100080
Abstract： Based on the relaxation equations describing the chemical quilibration of gluons, quarks and s quarks at finite baryon ensity derived from the Jüttner distribution of partons, with the help of a rapid phase transition scenario from quark hase to hadron phase, we calculate strangeness production in the quark phase and hadron phase. It is found that the K-/π- ratio is enhanced to be larger than that in pp collisions by about a factor 3.
(Relativistic heavy-ion collisions (collisions induced by light ions studied to calibrate relativistic heavy-ion collisions should be classified under both 25.75.-q and sections 13 or 25 appropriate to the light ions))
LONG Jia-Li;HE Ze-Jun;;MA Yu-Gang;;MA Guo-Liang;. Strangeness Production in Ultrarelativistic Nucleus-Nucleus Collisions[J]. 中国物理快报, 2004, 21(10): 1900-1903.
LONG Jia-Li, HE Ze-Jun, , MA Yu-Gang, , MA Guo-Liang,. Strangeness Production in Ultrarelativistic Nucleus-Nucleus Collisions. Chin. Phys. Lett., 2004, 21(10): 1900-1903.
2004, Vol. 21 
