Dilepton Invariant Mass Distribution in Central Rapidity Region

He Zejun; Zhang Jiaju

Chinese Physics C> 1995, Vol. 19> Issue(S4) : 421-425

Dilepton Invariant Mass Distribution in Central Rapidity Region

He Zejun ,
Zhang Jiaju

Institute of Nuclear Research, The Chinese Academy of Sciences, Shanghai, China

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Abstract：
The Boltzmann approximation of the phase-space distribution function of quarks and pions, adopted by previous authors, is generalized to a complete expression. After calculating the density of particles based on the temperature of the central rapidity region, we study the dilepton production in Bjorken's (1+1) dimensional scaling expansion system and find that the generalized approximate distribution function significantly changes the characteristic dilepton distribution predicted when assuming quark matter formation.
- central rapidity region ,
- dilepton spectrum ,
- Bjorken model

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He Zejun and Zhang Jiaju. Dilepton Invariant Mass Distribution in Central Rapidity Region[J]. Chinese Physics C, 1995, 19(S4): 421-425.

He Zejun and Zhang Jiaju. Dilepton Invariant Mass Distribution in Central Rapidity Region[J]. Chinese Physics C, 1995, 19(S4): 421-425. shu

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Received: 1994-11-24

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沈阳化工大学材料科学与工程学院沈阳 110142

Dilepton Invariant Mass Distribution in Central Rapidity Region

He Zejun
Zhang Jiaju

Institute of Nuclear Research, The Chinese Academy of Sciences, Shanghai, China

Received Date: 1994-11-24

Abstract: The Boltzmann approximation of the phase-space distribution function of quarks and pions, adopted by previous authors, is generalized to a complete expression. After calculating the density of particles based on the temperature of the central rapidity region, we study the dilepton production in Bjorken's (1+1) dimensional scaling expansion system and find that the generalized approximate distribution function significantly changes the characteristic dilepton distribution predicted when assuming quark matter formation.