Tetraquark states with open flavors

被引：30
作者：
Tang, Liang [1 ,3 ]
Qiao, Cong-Feng [2 ,3 ]
机构：
[1] Hebei Normal Univ, Dept Phys, Shijiazhuang 050024, Peoples R China
[2] Univ Chinese Acad Sci, Sch Phys, YuQuan Rd 19A, Beijing 100049, Peoples R China
[3] CAS Ctr Excellence Particle Phys, Beijing 100049, Peoples R China
来源：
EUROPEAN PHYSICAL JOURNAL C | 2016年 / 76卷 / 10期
基金：
中国国家自然科学基金;
关键词：
SUM-RULE CALCULATION; HIDDEN CHARM; RESONANCE PHYSICS; QCD; MASS;
D O I：
10.1140/epjc/s10052-016-4436-7
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：
In this work, we estimate the masses of tetraquark states with four different flavors by virtue of QCD sum rules, in both b and c sectors. We construct four tetraquark currents with , and then we perform an analytic calculation up to dimension eight in the operator product expansion. We keep terms which are linear in the strange quark mass , and in the end we find two possible tetraquark states with masses and GeV. We find that their charmed-partner masses lie in and GeV, respectively, and are hence accessible in experiments like BESIII and Belle.
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页数：7
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