Tetraquark mesons in large-N quantum chromodynamics.

Tetraquark mesons in large-N quantum chromodynamics.
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DOI:
10.1103/physrevlett.110.261601
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发表时间:
2013-03
影响因子:
8.6
通讯作者:
S. Weinberg
S. Weinberg
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
S. Weinberg

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我们认为,在量子色动力学中,由两个夸克和两个反夸克组成的奇异介子并不像通常认为的那样,具有大量N种颜色。一类四夸克通常寿命很长,衰变率与1/N成正比。
It is argued that exotic mesons consisting of two quarks and two antiquarks are not ruled out in quantum chromodynamics with a large number N of colors, as generally thought. Tetraquarks of one class are typically long-lived, with decay rates proportional to 1/N.