Limiting Fragmentation and &oslash; Meson Production at RHIC

SA Ben-hao; SU Zong-di; TAI An; ZHOU Dai-mei

doi:10.11804/NuclPhysRev.21.02.142

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SA Ben-hao, SU Zong-di, TAI An, ZHOU Dai-mei. Limiting Fragmentation and ø Meson Production at RHIC[J]. Nuclear Physics Review, 2004, 21(2): 142-147. doi: 10.11804/NuclPhysRev.21.02.142

Citation:

SA Ben-hao, SU Zong-di, TAI An, ZHOU Dai-mei. Limiting Fragmentation and ø Meson Production at RHIC[J]. Nuclear Physics Review, 2004, 21(2): 142-147. doi: 10.11804/NuclPhysRev.21.02.142

Limiting Fragmentation and ø Meson Production at RHIC

doi: 10.11804/NuclPhysRev.21.02.142

1 China Institute of Atomic Energy, Beijing 102413, China; 2 Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China; 3 Department of Physics and Astronomy, University of California, at LosAngeles, Los Angeles, CA 90095, USA; 4 CCAST (World Lab.), Beijing 100080, China; 5 Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2004-06-20

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.
- limiting fragmentation,
- energy dependence of charged particle,
- participant pair scaling,
- π meson,
- LUCIAE model
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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Limiting Fragmentation and ø Meson Production at RHIC

doi: 10.11804/NuclPhysRev.21.02.142

1 China Institute of Atomic Energy, Beijing 102413, China; 2 Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China; 3 Department of Physics and Astronomy, University of California, at LosAngeles, Los Angeles, CA 90095, USA; 4 CCAST (World Lab.), Beijing 100080, China; 5 Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2004-06-20

Key words:

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.

SA Ben-hao, SU Zong-di, TAI An, ZHOU Dai-mei. Limiting Fragmentation and ø Meson Production at RHIC[J]. Nuclear Physics Review, 2004, 21(2): 142-147. doi: 10.11804/NuclPhysRev.21.02.142

Citation:

SA Ben-hao, SU Zong-di, TAI An, ZHOU Dai-mei. Limiting Fragmentation and ø Meson Production at RHIC[J]. Nuclear Physics Review, 2004, 21(2): 142-147. doi: 10.11804/NuclPhysRev.21.02.142