Heavy quark spin selection rule and the properties of the X (3872)

被引：77

作者：

Voloshin, MB ^{[1
]}

机构：

[1] Univ Minnesota, William I Fine Theoret Phys Inst, Minneapolis, MN 55455 USA

[2] Inst Theoret & Expt Phys, Moscow 117259, Russia

来源：

PHYSICS LETTERS B | 2004年 / 604卷 / 1-2期

关键词：

D O I：

10.1016/j.physletb.2004.11.003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The properties of the resonance X(3872) are discussed under the assumption that this resonance is dominantly a `molecular' J(PC) = 1(++) state of neutral D and D* mesons. It is argued that these properties should be dominated by the states with the total spin of the charmed quark-antiquark pair equal to one. As a practical application of this observation the ratio of the rates of the decays X --> pi(0)chi(cJ) for different J is predicted. It is also pointed out that the total rate of these decays is likely to be comparable to that of the observed transitions X --> pi(+)pi(-)Jpsi and X--> pi(+)pi(-) Jpsi. The decays of the X into light hadrons and its production in hadronic processes are also briefly discussed. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：69 / 73

页数：5

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