Comment on the new Ds(*)+ π0 resonances

被引：123
作者：
Browder, TE [1 ]
Pakvasa, S
Petrov, AA
机构：
[1] Univ Hawaii Manoa, Dept Phys & Astron, Honolulu, HI 96822 USA
[2] Wayne State Univ, Dept Phys & Astron, Detroit, MI 48201 USA
[3] Univ Michigan, Michigan Ctr Theoret Phys, Ann Arbor, MI USA
来源：
PHYSICS LETTERS B | 2004年 / 578卷 / 3-4期
关键词：
D O I：
10.1016/j.physletb.2003.10.067
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We propose an explanation of the new resonances observed in Ds((*)+)pi(0) decays. We suggest that the data can be explained by the mixing of conventional p-wave excited D-s(+) mesons with 4-quark states. The narrow states observed in D(s)(+)pi(0) and D-s*+pi(0) are primarily p-wave D-sJ(*) states, while the predominantly 4-quark states are shifted above (DK)-K-(*) threshold and should be broad. Ranges for the mixing parameter and mass of the 4-quark state in this scenario are given. Other experimental consequences are discussed. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：365 / 368
页数：4
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