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

REN Jiang-Long

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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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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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.

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

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

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[4]	Guo Hua . In-medium QMC Model Parameters and Quark Condensation in Nuclear Matter. Chinese Physics C, 1999, 23(5): 459-468.
[5]	Yu Hong , Shen Qixing , Zhang Lin . Angular Distribution of Process e⁺e^－→τ⁺τ^－,τ^－→a₁υτ,a₁→ρπ and Characteristics of a₁ Meson. Chinese Physics C, 1994, 18(7): 583-590.
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[7]	WU Zhong-Li . ANALYSIS OF THE MOMENTUM DISTRIBUTION WIDTH OF THE PREOJECTILE-LIKE-FRAGMENT FROM HEAVY ION COLLISIONS. Chinese Physics C, 1989, 13(8): 752-754.
[8]	Sa Ben-hao , Zhang Xi-zhen , Li Zhu-xia , Shi Yi-jin . A PRIMARY RESEARCH OF THE PHONON RENORMALIZATION OF NUCLEAR FIELD THEORY. Chinese Physics C, 1980, 4(3): 398-400.

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

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

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

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