Chinese Physics C > 1992, Vol. 16 > Issue(1): 44-50

Secondary Collision and the Enhancement of the K⁺π⁺Ratio in the High Energy Heavy-ion Collision

REN Jiang-Long^,

Institute of High Energy Physics,Academia,Beijing 100039

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Abstract：
The enhancement of K ⁺/π ⁺ratio in the high energy heavy-ion collision is believed to be a possible signature of the quark gluon plasma.Based on the Participant Nucleon Model and the concept of the formation time of secondary particles,the K ⁺/π ⁺ratio in the central collision of Si(14.5GeV/c) and Au are calculated by Monte Carlo simulation.The following secondary collisions are considered.πN→K ⁺Y、ππ→KK and the single charge exchange reaction between pions and nucleons.The calculation results show that the increased K ⁺/π ⁺ratio caused by these secondary collisions is not enough to explain the experimental data observed by the E802 group at BNL.

References

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REN Jiang-Long. Secondary Collision and the Enhancement of the K ⁺π ⁺Ratio in the High Energy Heavy-ion Collision[J]. Chinese Physics C, 1992, 16(1): 44-50.

REN Jiang-Long. Secondary Collision and the Enhancement of the K ⁺π ⁺Ratio in the High Energy Heavy-ion Collision[J]. Chinese Physics C, 1992, 16(1): 44-50. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Secondary Collision and the Enhancement of the K⁺π⁺Ratio in the High Energy Heavy-ion Collision

REN Jiang-Long^,

Corresponding author:REN Jiang-Long,

Institute of High Energy Physics,Academia,Beijing 100039

Received Date:1900-01-01
Accepted Date:1900-01-01
Available Online:1992-01-05

Abstract:The enhancement of K⁺/π⁺ratio in the high energy heavy-ion collision is believed to be a possible signature of the quark gluon plasma.Based on the Participant Nucleon Model and the concept of the formation time of secondary particles,the K⁺/π⁺ratio in the central collision of Si(14.5GeV/c) and Au are calculated by Monte Carlo simulation.The following secondary collisions are considered.πN→K⁺Y、ππ→KK and the single charge exchange reaction between pions and nucleons.The calculation results show that the increased K⁺/π⁺ratio caused by these secondary collisions is not enough to explain the experimental data observed by the E802 group at BNL.