Light nuclei production in heavy-ion collisions at relativistic energies

Light nuclei production in heavy-ion collisions at relativistic energies
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DOI：
10.1103/physrevc.65.034907
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发表时间：
2002-03
期刊：
Physical Review C
影响因子：
3.1
通讯作者：
S. Albergo;R. Bellwied;M. Bennett;B. Bonner;H. Caines;W. Christie;S. Costa;H. Crawford;M. Cronqvist;R. Debbe;J. Engelage;L. Greiner;T. Hallman;G. Hijazi;G. Hoffmann;H. Huang;T. Humanic;A. Insolia;P. Jensen;E. Judd;K. Kainz;M. Kaplan;S. Kelly;I. Kotov;G. Kunde;P. Lindstrom;W. Llope;G. Locurto;R. Longacre;D. Lynn;N. Mahzeh;Z. Milosevich;J. Mitchell;J. Mitchell;S. Nehmeh;S. Paganis;S. Pandey;R. Potenza;D. Russ;A. Saulys;J. Schambach;J. Sheen;E. Sugarbaker;J. Takahashi;Jaw-Luen Tang;A. Trattner;S. Trentalange;A. Tricomi;C. Tuvè;J. Whitfield;K. Wilson
S. Albergo;R. Bellwied;M. Bennett;B. Bonner;H. Caines;W. Christie;S. Costa;H. Crawford;M. Cronqvist;R. Debbe;J. Engelage;L. Greiner;T. Hallman;G. Hijazi;G. Hoffmann;H. Huang;T. Humanic;A. Insolia;P. Jensen;E. Judd;K. Kainz;M. Kaplan;S. Kelly;I. Kotov;G. Kunde;P. Lindstrom;W. Llope;G. Locurto;R. Longacre;D. Lynn;N. Mahzeh;Z. Milosevich;J. Mitchell;J. Mitchell;S. Nehmeh;S. Paganis;S. Pandey;R. Potenza;D. Russ;A. Saulys;J. Schambach;J. Sheen;E. Sugarbaker;J. Takahashi;Jaw-Luen Tang;A. Trattner;S. Trentalange;A. Tricomi;C. Tuvè;J. Whitfield;K. Wilson
中科院分区：
物理与天体物理2区
文献类型：
--
作者：
S. Albergo;R. Bellwied;M. Bennett;B. Bonner;H. Caines;W. Christie;S. Costa;H. Crawford;M. Cronqvist;R. Debbe;J. Engelage;L. Greiner;T. Hallman;G. Hijazi;G. Hoffmann;H. Huang;T. Humanic;A. Insolia;P. Jensen;E. Judd;K. Kainz;M. Kaplan;S. Kelly;I. Kotov;G. Kunde;P. Lindstrom;W. Llope;G. Locurto;R. Longacre;D. Lynn;N. Mahzeh;Z. Milosevich;J. Mitchell;J. Mitchell;S. Nehmeh;S. Paganis;S. Pandey;R. Potenza;D. Russ;A. Saulys;J. Schambach;J. Sheen;E. Sugarbaker;J. Takahashi;Jaw-Luen Tang;A. Trattner;S. Trentalange;A. Tricomi;C. Tuvè;J. Whitfield;K. Wilson

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我们在布鲁克海文交变梯度同步加速器(AGS)上测量了11.6mathm{GeV}/c$Au-Au碰撞中轻核(Al3)的产生。用热火球模型分析了横向质谱图，并假设合并和破碎是可能的产生机制，讨论了不同粒子物种的产额。由于测量结果的接受范围很宽，因此可以广泛地研究聚结参数作为横向动量和快度的函数。与以前在AGS能区获得的数据进行比较表明，这些简单的模型不足以完全描述轻核的产生机制。
We have measured the production of light nuclei $(Al~3)$ in $11.6 \mathrm{GeV}/c$ Au-Au collisions at the Brookhaven Alternating Gradient Synchrotron (AGS). The transverse mass spectra are analyzed using a thermal fireball model, and the yields for different particle species are discussed assuming coalescence and fragmentation as possible production mechanisms. The wide acceptance range of the ${}^{3}\mathrm{He}$ measurements permits a broad study of the coalescence parameter ${B}_{3}$ as functions of transverse momentum and rapidity. Comparisons with data obtained previously at AGS energies suggest that the simple models are insufficient to describe fully the production mechanisms of light nuclei.