VECTOR-MESONS IN NUCLEAR MEDIUM - AN EFFECTIVE LAGRANGIAN APPROACH

被引：115

作者：

SHIOMA, H

HATSUDA, T

机构：

[1] Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki

来源：

PHYSICS LETTERS B | 1994年 / 334卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(94)90688-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Several authors have shown that the mass of the omega-meson decreases in nuclear medium using the Walecka model. We generalize the approach to the rho-meson and show that both the pole position and the screening mass decrease in nuclear matter due to the polarization of the nucleon Dirac sea. The physical origin of the decrease is a reduction of the wave function renormalization constant induced by the rhoNN tensor coupling. A comparison of our result with that in the QCD sum rules is also made.

引用

收藏

页码：281 / 286

页数：6

相关论文

共 30 条

[1] RHO MESON IN DENSE HADRONIC MATTER [J].

ASAKAWA, M ;

KO, CM ;

LEVAI, P ;

QIU, XJ .

PHYSICAL REVIEW C, 1992, 46 (04) :R1159-R1162

[2] K+-NUCLEUS SCATTERING AND THE SWELLING OF NUCLEONS IN NUCLEI [J].

BROWN, GE ;

DOVER, CB ;

SIEGEL, PB ;

WEISE, W .

PHYSICAL REVIEW LETTERS, 1988, 60 (26) :2723-2726

[3] SCALING EFFECTIVE LAGRANGIANS IN A DENSE MEDIUM [J].

BROWN, GE ;

RHO, M .

PHYSICAL REVIEW LETTERS, 1991, 66 (21) :2720-2723

[4] DIRAC SEA EFFECTS IN K+ SCATTERING FROM NUCLEI [J].

CAILLON, JC ;

LABARSOUQUE, J .

PHYSICS LETTERS B, 1993, 311 (1-4) :19-21

[5] COVARIANT DESCRIPTION OF DYNAMIC PROCESSES IN RELATIVISTIC NUCLEAR-MATTER [J].

CELENZA, LS ;

PANTZIRIS, A ;

SHAKIN, CM .

PHYSICAL REVIEW C, 1992, 45 (01) :205-290

[6] RELATIVISTIC MANY-BODY THEORY OF HIGH-DENSITY MATTER [J].

CHIN, SA .

ANNALS OF PHYSICS, 1977, 108 (02) :301-367

[7]

ENYO H, COMMUNICATION

[8]

ENYO H, 1993, KEK PS PROPOSAL

[9] VACUUM POLARIZATION EFFECTS ON MESON PROPAGATORS [J].

FURNSTAHL, RJ ;

HOROWITZ, CJ .

NUCLEAR PHYSICS A, 1988, 485 (3-4) :632-652

[10] ANALYSIS OF NN AND NNBAR FORWARD SCATTERING-AMPLITUDES INCLUDING INFORMATION FROM PI-PI AND PI-N SCATTERING [J].

GREIN, W .

NUCLEAR PHYSICS B, 1977, 131 (2-3) :255-274