Heavy-light mesons spectrum from the nonperturbative QCD in the einbein field formalism

被引：30

作者：

Kalashnikova, YS ^{[1
]}

Nefediev, AV ^{[1
]}

机构：

[1] Inst Theoret & Expt Phys, Moscow 117218, Russia

来源：

PHYSICS LETTERS B | 2000年 / 492卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(00)01063-7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The spectrum of B and D mesons (including the lo-iv lying orbitally and radially excited states) is calculated using the quark-antiquark Hamiltonian derived from QCD in the einbein field formalism. Spin-spin and spin-orbit terms due to the confinement and OGE interactions are taken into account as perturbations. Results for the masses and splittings are confronted to the experimental and recent lattice data and are demonstrated to be in a reasonable agreement with both. We find that the orbital excitations with l = 2 and l = 3 for D meson lie approximately in the same region as its first radial excitation that might solve the mystery of the extremely narrow D (2637) state recently claimed by DELPHI Collaboration. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：91 / 97

页数：7

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