Relative Information Entropy of Particle Production in High Energy Induced Nuclear Reactions

  • A new characteristic quantity called relative information entropy R is introduced,which is employed to investigate the multiplicity distribution of produced particles in 14.6. 60, 200 A GeV oxygen ions and 200 A GeV sulphur ions induced nuclear reactions. It is found that R is insensitive to energy. R increases with the size of rapidity window and rapidly reaches saturation, which explores the fact that the entropy is concentrated in the central rapidity region. The experimental results are in good agreement with the prediction of the FRITIOF simulation of the Lund model.
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  • [1] 蔡勖,物理学进展,8(1988)186;H.Satz,CERN Preprint,CERN-TH 6216/91,Oct.1991;H.R.Schmidt and J.Schukraft,GSI pereprint,GSI-92-19,March 1992,[2]V.Simak,M.Sumbera and I.Zborovsky,Pkys.Rev.,B206(1988)159.[3]Z.M.Zhou and X.Cai,Chinese Phys.Lett.,6(1989)317;X.Cai,D.C.Zhou,J.C.Zhou and z.M.zhou,Proc.of Intern.Workshop on Correlations and Multiparticle Production,Marburg,Germany,May14-16,1990-,Edited by M.Plumer,S.Raha and R.M.Weriner,World Scientific.[4]L.Brillouin,Science and Information Theory,A cademic,New york,1962;A.Wehrl,Rev.Mod.Phys,50(1978)221.[5]I.Otterlund,Nucl.Phys.,A418(1984)87c.[6]EMU01 Collaboration:M.I.Adamovich et al,Phy.Rev.Lett.62(1989)2801.[7]B.Nilsson-Almqvist and E.Stenlund,Comp.Phys.Comm,43(1987)373;以及其中引用的文献。[8]EMU01 Collaboration:M.I.Adamovich et al.,Phys,Let.,B223(1989)262.[9]UA5 Collaboration:G.J.Anier et al.,Phys,Rep.,154(1987)247.[10]P.A.Carruthers et al,Phys.Lett.B212(1988)369;R.M.Weiner,Z.Phys.,C38(1988)396.
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Relative Information Entropy of Particle Production in High Energy Induced Nuclear Reactions[J]. Chinese Physics C, 1994, 18(4): 289-295.
Relative Information Entropy of Particle Production in High Energy Induced Nuclear Reactions[J]. Chinese Physics C, 1994, 18(4): 289-295. shu
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Received: 1900-01-01
Revised: 1900-01-01
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Relative Information Entropy of Particle Production in High Energy Induced Nuclear Reactions

  • Institute of High Energy Physics, Academia Sinica, Benijing 100039

Abstract: A new characteristic quantity called relative information entropy R is introduced,which is employed to investigate the multiplicity distribution of produced particles in 14.6. 60, 200 A GeV oxygen ions and 200 A GeV sulphur ions induced nuclear reactions. It is found that R is insensitive to energy. R increases with the size of rapidity window and rapidly reaches saturation, which explores the fact that the entropy is concentrated in the central rapidity region. The experimental results are in good agreement with the prediction of the FRITIOF simulation of the Lund model.

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