Rho meson properties in the NJL model

被引：0

作者：

Polleri, A ^{[1
]}

Broglia, RA ^{[1
]}

Pizzochero, PM ^{[1
]}

Scoccola, NN ^{[1
]}

机构：

[1] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen O, Denmark

来源：

INTERNATIONAL WORKSHOP ON HADRON PHYSICS 96: TOPICS ON THE STRUCTURE AND INTERACTION OF HADRONIC SYSTEMS | 1997年

关键词：

D O I：

暂无

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Some properties of the rho vector meson are calculated within the Nambu-JonaLasinio model. including processes that go beyond the random phase approximation. To classify the higher order contributions. we adopt 1/N-c as expansion parameter. In particular, we evaluate the leading order contributions to the rho --> pi pi decay width, obtaining the value Gamma = 118 MeV, and to the shift of the rho mass which turns out to be lowered by 64 MeV with respect to its RPA value. A set of model parameters is determined accordingly.

引用

页码：425 / 428

页数：4

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