Chaotic motion of the c(c)over-bar system and a new mechanism of J/ψ suppression

被引：0

作者：

Zong, HS

Gu, JZ

Liu, YX

Zhang, XF

Zhao, EG

机构：

[1] Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China

[2] Peking Univ, Dept Phys, Beijing 100871, Peoples R China

[3] Acad Sinica, Inst High Energy Phys, Beijing 100039, Peoples R China

来源：

COMMUNICATIONS IN THEORETICAL PHYSICS | 1999年 / 31卷 / 04期

关键词：

J/psi suppression; energy spectrum statistics; color screening; level mixing;

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Based on random matrix theory and reduced BS equation, it is found that the regular motion of c (c) over bar system can be expected at a small value of color screening mass but the chaotic motion at a large one. It is shown that the level mixing due to color screening serves as a new mechanism resulting in J/psi suppression. Moreover, this kind of suppression can occur before the color screening mass reaches its critical value for J/psi dissociation. In addition, it is implied that a strong J/psi suppression is possible in the absence of dissociation of J/psi.

引用

页码：607 / 610

页数：4

共 19 条

[1] THE PRODUCTION OF J/PSI IN 200 GEV-NUCLEON OXYGEN-URANIUM INTERACTIONS [J].

BAGLIN, C ;

BUSSIERE, A ;

GUILLAUD, JP ;

OGREN, H ;

STALEY, F ;

BALDIT, A ;

CASTOR, J ;

DEVAUX, A ;

FARGEIX, J ;

FELGEYROLLES, X ;

FORCE, P ;

FREDJ, L ;

LANDAUD, G ;

SONDEREGGER, P ;

ABREU, MC ;

BARREIRA, GP ;

BORDALO, P ;

CASACA, A ;

FERRAZ, A ;

FERREIRA, R ;

GAGO, JM ;

GOMES, P ;

LOURENCO, C ;

MAIO, A ;

PERALTA, L ;

PIMENTA, M ;

RAMOS, S ;

VARELA, J ;

GERSCHEL, C ;

SINQUIN, A ;

BORENSTEIN, S ;

BUSSON, P ;

CHARLOT, C ;

CHAURAND, B ;

KLUBERG, L ;

ROMANA, A ;

SALMERON, RA ;

BRITZ, J ;

GORODETZKY, P ;

KRAUS, L ;

LINCK, I ;

RACCA, C ;

CASES, R ;

ALIMI, M ;

BEDJIDIAN, M ;

CONTARDO, D ;

DESCROIX, E ;

DRAPIER, O ;

GROSSIORD, JY ;

GUICHARD, A .

PHYSICS LETTERS B, 1989, 220 (03) :471-478

[2] STUDY OF J/PSI PRODUCTION IN P-U, O-U AND S-U INTERACTIONS AT 200 GEV PER NUCLEON [J].

BAGLIN, C .

PHYSICS LETTERS B, 1991, 255 (03) :459-465

[3] J/psi suppression in Pb-Pb collisions: A hint of quark-gluon plasma production? [J].

Blaizot, JP ;

Ollitrault, JY .

PHYSICAL REVIEW LETTERS, 1996, 77 (09) :1703-1706

[4]

BOHIGAS O, 1988, ANNU REV NUCL PART S, V38, P421

[5] QUARKONIA AND QUANTUM CHROMODYNAMICS [J].

BUCHMULLER, W ;

TYE, SHH .

PHYSICAL REVIEW D, 1981, 24 (01) :132-156

[6] J-PSI SUPPRESSION IN NUCLEAR COLLISIONS REVISITED [J].

CAPELLA, A ;

MERINO, C ;

VAN, JTT ;

PAJARES, C ;

RAMALLO, A .

PHYSICS LETTERS B, 1990, 243 (1-2) :144-148

[7] Charmonium suppression by comover scattering in Pb+Pb collisions [J].

Gavin, S ;

Vogt, R .

PHYSICAL REVIEW LETTERS, 1997, 78 (06) :1006-1009

[8]

GONIN M, 1996, REPROT QUARK MATTER

[9] The single-particle spectrum and its spacing and curvature distributions in rotating heavy nuclei [J].

Gu, JZ ;

Wu, XZ ;

Zhuo, YZ .

NUCLEAR PHYSICS A, 1996, 611 (2-3) :315-331

[10] Quantum chaotic motion of a single particle in heavy nuclei [J].

Gu, JZ ;

Wu, XZ ;

Zhou, YZ ;

Zhao, EG .

NUCLEAR PHYSICS A, 1997, 625 (03) :621-632

← 1 2 →