Mott effect at the chiral phase transition and anomalous J/ψ suppression

被引：31

作者：

Burau, GRG ^{[1
]}

Blaschke, DB

Kalinovsky, YL

机构：

[1] Univ Rostock, Fachbereich Phys, D-18051 Rostock, Germany

[2] Joint Inst Nucl Res, Informat Technol Lab, Dubna 141980, Russia

来源：

PHYSICS LETTERS B | 2001年 / 506卷 / 3-4期

关键词：

J/psi suppression; bound state dissociation; Mott effect;

D O I：

10.1016/S0370-2693(01)00141-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the in-medium modification of the charmonium break-up process due to the Mott effect for light (pi) and open-charm (D, D*) mesons at the chiral/deconfinement phase transition. A model calculation for the process J/psi + pi --> D + (D) over bar* + h.c. is presented which demonstrates that the Mott effect for the D-mesons leads to a threshold effect in the thermal averaged break-up cross section. This effect is suggested as an explanation of the phenomenon of anomalous J/psi suppression in the CERN NA50 experiment. (C) 2001 Elsevier Science B.V. AH rights reserved.

引用

页码：297 / 302

页数：6

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