在RHIC的极限碎裂和Φ介子产生(英文)
Limiting Fragmentation and ø Meson Production at RHIC
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摘要: 利用强子和串级联模型LUCIAE研究了PHOBOS的极限碎裂等以及在PHIC进行的Au+Au碰撞中带电粒子多重性的经验标度规律. 对Φ介子的产生机制也通过与带电粒子多重性的比较进行类似的研究. 结果似乎表明在串级碎裂模型中带电粒子和Φ介子有共同的产生机制. 还讨论了PHOBOS经验标度规律的模型依赖性.
The PHOBOS’s limiting fragmentation etc. three empirical scaling rules for
charged multiplicity in Au+Au collisions at RHIC are investigated by a
hadron and string cascade model LUCIAE. Similar studies are performed for the meson exploring its production mechanism via comparing with the charged
multiplicity. The LUCIAE results for charged multiplicity are compatible with
PHOBOS observations. However, for the meson the three empirical scaling
rules are either kept only or kept better in the LUCIAE calculations without
reduction mechanism of the s quark suppression extra introduced for the
strangeness in LUCIAE model. These results seem indicating a universal
production mechanism for charged particle and meson in string
fragmentation regime. It is discussed that the PHOBOS’s empirical scaling
rules are model dependent indeed.
Abstract: The PHOBOS’s limiting fragmentation etc. three empirical scaling rules for
charged multiplicity in Au+Au collisions at RHIC are investigated by a
hadron and string cascade model LUCIAE. Similar studies are performed for the meson exploring its production mechanism via comparing with the charged
multiplicity. The LUCIAE results for charged multiplicity are compatible with
PHOBOS observations. However, for the meson the three empirical scaling
rules are either kept only or kept better in the LUCIAE calculations without
reduction mechanism of the s quark suppression extra introduced for the
strangeness in LUCIAE model. These results seem indicating a universal
production mechanism for charged particle and meson in string
fragmentation regime. It is discussed that the PHOBOS’s empirical scaling
rules are model dependent indeed.
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