| 相对论核－核碰撞中产生的Λ粒子的横向极化度与横向动量的关联 |
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| 引用本文： | 叶云秀,苏淑芳,周昕,朱国怀,季刚. 相对论核－核碰撞中产生的Λ粒子的横向极化度与横向动量的关联[J]. 中国物理 C, 1996, 0(8) |
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| 作者姓名： | 叶云秀 苏淑芳 周昕 朱国怀 季刚 |
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| 作者单位： | 中国科技大学近代物理系，中国科技大学少年班 |
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| 摘 要： | 对在相对论能量下重核反应中产生的粒子的横向极化度进行了测定．对粒子自旋磁矩与磁场相互作用所造成的自旋进动效应进行了修正，得到了粒子的零横向极化度及其与横动量的无关联关系．与较低能量时核－核反应中产生的粒子的极化情况进行了比较．结果表明，在相对论重核反应下的粒子的产生机制有别于高能质子引起的反应和较低能时的核－核反应中产生粒子的机制．
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| 关 键 词： | 相对论核－核碰撞，Λ粒子的极化，横向极化与横动量的关联，夸克－胶子等离子体． |
The Correlation Between the Transverse Polarization andTransverse Momentum of Lambda Produced in RelativisticNucleus-Nucleus Collisions |
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| Ye Yunxiu, Su Shufangl, Zhou Xin, Zhu Guohuai, Ji Gang. The Correlation Between the Transverse Polarization andTransverse Momentum of Lambda Produced in RelativisticNucleus-Nucleus Collisions[J]. High Energy Physics and Nuclear Physics, 1996, 0(8) |
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| Authors: | Ye Yunxiu Su Shufangl Zhou Xin Zhu Guohuai Ji Gang |
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| Abstract: | The transverse polarization of lambda produced in relativistic nucleus-nucleuscollisions is determined. The effect from the interaction between spin moment andmagnetic field is corrected. The near zero transverse polarization and non-correlationbetween transverse polarization and transverse momentum are obtained and comparedto pos obtained from the nucleus-nucleus interactions at lower energies. This comparison shows that the production mechanism of lambda in the relativisticnucleus-nucleus collisions is different from one in the nucleus-nucleus reactions atlower energies. |
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| Keywords: | relativistic nucleus-nucleus collisions polarization of lambda correlation between transverse polarization and transverse momentum quark-gluonplasma. |
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