Forward-backward emission of target evaporated fragmentsin high energy nucleus-nucleus collisions

ZHANG Zhi; MA Tian-Li; ZHANG Dong-Hai

doi:10.1088/1674-1137/39/10/104002

Chinese Physics C> 2015, Vol. 39> Issue(10) : 104002 DOI: 10.1088/1674-1137/39/10/104002

Forward-backward emission of target evaporated fragmentsin high energy nucleus-nucleus collisions

Abstract
HTML
Reference
Related

PDF

Abstract：
The multiplicity distribution, multiplicity moment, scaled variance, entropy and reduced entropy of target evaporated fragments emitted in forward and backward hemispheres in 12 A GeV ⁴He, 3.7 A GeV ¹⁶O, 60 A GeV ¹⁶O, 1.7 A GeV ⁸⁴Kr and 10.7 A GeV ¹⁹⁷Au-induced emulsion heavy target (AgBr) interactions are investigated. It is found that the multiplicity distribution of target evaporated fragments emitted in both forward and backward hemispheres can be fitted by a Gaussian distribution. The multiplicity moments of target evaporated particles emitted in the forward and backward hemispheres increase with the order of the moment q, and the second-order multiplicity moment is energy independent over the entire energy range for all the interactions in the forward and backward hemisphere. The scaled variance, a direct measure of multiplicity fluctuations, is close to one for all the interactions, which indicate a correlation among the produced particles. The entropy of target evaporated fragments emitted in both forward and backward hemispheres are the same within experimental errors.

References

[1]

Bowman J D, Swiatecki W J, Tsang C F. Abrasion and Ablation of Heavy Ions. Lawrence Berkeley Report: LBL-2908, 1973[2] Powell C F, Fowler P H, Perkins D H. The Study of Elementary Particles by the Photographic Method, Pergamon Press. London, New York: Paris, Los Angles, 1959. 432[3] Ghosh D, Deb A, Bhattacharyya S. Phys. Scr., 2011, 84: 015201[4] ZHANG Dong-Hai, CHEN Yan-Ling, WANG Guo-Rong et al. Chin. Phys. C, 2015, 39: 014001[5] Stocker H, Maruhn J A, Greiner W. Z. Phys. A, 1979, 293: 173-179[6] Koba Z, Nielsen H B, Olesen P. Nucl. Phys. B, 1972, 40: 317-334[7] Wehrl A. Rev. Mod. Phys., 1978, 50: 221-260[8] Simak V, Sumbera M, Zborovski I. Phys. Lett. B, 1988, 206: 159-162[9] Ghosh D. Roy J. Sengupta A G et al. Can. J. Phys., 1992, 70: 667-669

[1]	Ya-Hui Chen , Fu-Hu Liu , Edward K. Sarkisyan-Grinbaum . Event patterns from negative pion spectra in proton-proton and nucleus-nucleus collisions at SPS. Chinese Physics C, 2018, 42(10): 104102. doi: 10.1088/1674-1137/42/10/104102
[2]	Cong-Cong Zhang , Xian-Bao Yuan , Sheng-Qin Feng , Zhong-Bao Yin . Strange particle production in relativistic nucleus-nucleus collisions in the RHIC BES energy region. Chinese Physics C, 2016, 40(3): 034104. doi: 10.1088/1674-1137/40/3/034104
[3]	ZHANG Dong-Hai , CHEN Yan-Ling , WANG Guo-Rong , LI Wang-Dong , WANG Qing , YAO Ji-Jie , ZHOU Jian-Guo , LI Rong , LI Jun-Sheng , LI Hui-Ling . Forward-backward multiplicity correlations of target fragments in nucleus-emulsion collisions at a few hundred MeV/u. Chinese Physics C, 2015, 39(1): 014001. doi: 10.1088/1674-1137/39/1/014001
[4]	REN Xiao-Wen , FENG Sheng-Qin , YUAN Xian-Bao . Strange particle production in relativistic nucleus-nucleus collisions at RHIC and LHC energy regions. Chinese Physics C, 2014, 38(5): 054102. doi: 10.1088/1674-1137/38/5/054102
[5]	LI Hui-Ling . Azimuthal correlations of hadrons and fragments in nucleus-nucleus collisions. Chinese Physics C, 2011, 35(12): 1105-1110. doi: 10.1088/1674-1137/35/12/005
[6]	XU Xiao-Ming , ZHOU Jie . Nuclear modification factor for J/ψ production in nucleus-nucleus collisions. Chinese Physics C, 2011, 35(5): 463-466. doi: 10.1088/1674-1137/35/5/011
[7]	WANG Hong-Min , HOU Zhao-Yu , WANG Xiu-Ting , SUN Xian-Jing . Gluon saturation and net-proton spectra in relativistic nucleus-nucleus collisions. Chinese Physics C, 2011, 35(3): 255-258. doi: 10.1088/1674-1137/35/3/008
[8]	XIE Wen-Jie . Transverse momentum spectra in high-energy nucleus-nucleus, proton-nucleus and proton-proton collisions. Chinese Physics C, 2011, 35(12): 1111-1119. doi: 10.1088/1674-1137/35/12/006
[9]	R. G. Nazmitdinov , E. I. Shahaliev , M. K. Suleymanov . Central nucleus-nucleus collisions at relativistic energies with a new method based on Random Matrix Theory. Chinese Physics C, 2010, 34(8): 1076-1081. doi: 10.1088/1674-1137/34/8/007
[10]	SHAO Gui-Cheng . Multiparticle azimuthal correlations in central nucleus-nucleus collisions at high energy. Chinese Physics C, 2010, 34(3): 340-343. doi: 10.1088/1674-1137/34/3/007
[11]	LI Hui-Ling , ZHANG Dong-Hai , LI Jun-Sheng . Multiplicities of forward-backward particles in ¹⁶O-emulsion interactions at 4.5 AGeV/c. Chinese Physics C, 2009, 33(7): 521-527. doi: 10.1088/1674-1137/33/7/004
[12]	HUANG Huan-Zhong . Jet energy loss and bulk parton collectivity in nucleus-nucleus collisions at RHIC. Chinese Physics C, 2009, 33(6): 456-462. doi: 10.1088/1674-1137/33/6/011
[13]	SUN Zhu , LIU Fu-Hu . Multiplicity distribution of final-state particles and different contributions of related sources in nucleus-nucleus collisions at high energies. Chinese Physics C, 2008, 32(9): 740-743. doi: 10.1088/1674-1137/32/9/011
[14]	Qin Keyu , Jiang Huanqing , Liu Bo . Initial-State Interaction and J/ψ Suppression in High-Energy Proton-Nucleus Collisions. Chinese Physics C, 1996, 20(S4): 359-362.
[15]	Zhang Yang , Liu Lianshou . The Forward-Backward Correlation and Clustered Production of Final-State Particles in High Energy pp Collision. Chinese Physics C, 1994, 18(Z1): 69-78.
[16]	Liu Bo , Jiang Huanqing . The K⁺/π⁺ Ratio in High-Energy Nucleus Collisions and the Effect of Secondary Collisions. Chinese Physics C, 1993, 17(S4): 403-409.
[17]	Wang Shaoshun , Zhang Jie , Ye Yunxiu , Xiao Chenguo , Luo Qi , Cheng Zhengdong , Zhang Xueqian , Xu Wanli , Xiong Weijun . Forward-Backward Multiplicity Correlations in pp Collisions at 400 GeV/c. Chinese Physics C, 1992, 16(S4): 367-374.
[18]	Wang Haiqiao , Cai Xu . Correlation Between Grey Particles and the Number of hN Interactions Inside a Nucleus in High Energy hA Collisions. Chinese Physics C, 1990, 14(S2): 189-193.
[19]	Zhuang Pengfei , Liu Lianshou . Nonlinear Effects and Target Mass Dependence in High Energy Nucleus-Nucleus Collisions. Chinese Physics C, 1990, 14(S2): 179-187.
[20]	Lu Zhaoqi , D. H. E. Gross , Sa Benhao , Zheng Yuming . Charge Dispersion of Fragments in High Energy Proton-Nucleus Collisions. Chinese Physics C, 1988, 12(S1): 45-50.

Access

Get Citation

ZHANG Zhi, MA Tian-Li and ZHANG Dong-Hai. Forward-backward emission of target evaporated fragmentsin high energy nucleus-nucleus collisions[J]. Chinese Physics C, 2015, 39(10): 104002. doi: 10.1088/1674-1137/39/10/104002

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2015-01-05
Revised: 1900-01-01

Article Metric

Article Views(1744)
PDF Downloads(55)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Forward-backward emission of target evaporated fragmentsin high energy nucleus-nucleus collisions

Corresponding author: ZHANG Dong-Hai,

Received Date: 2015-01-05

Accepted Date: 1900-01-01

Available Online: 2015-10-10

Abstract: The multiplicity distribution, multiplicity moment, scaled variance, entropy and reduced entropy of target evaporated fragments emitted in forward and backward hemispheres in 12 A GeV ⁴He, 3.7 A GeV ¹⁶O, 60 A GeV ¹⁶O, 1.7 A GeV ⁸⁴Kr and 10.7 A GeV ¹⁹⁷Au-induced emulsion heavy target (AgBr) interactions are investigated. It is found that the multiplicity distribution of target evaporated fragments emitted in both forward and backward hemispheres can be fitted by a Gaussian distribution. The multiplicity moments of target evaporated particles emitted in the forward and backward hemispheres increase with the order of the moment q, and the second-order multiplicity moment is energy independent over the entire energy range for all the interactions in the forward and backward hemisphere. The scaled variance, a direct measure of multiplicity fluctuations, is close to one for all the interactions, which indicate a correlation among the produced particles. The entropy of target evaporated fragments emitted in both forward and backward hemispheres are the same within experimental errors.

HTML

Reference (1)

Forward-backward emission of target evaporated fragmentsin high energy nucleus-nucleus collisions

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article