Interpretation of the newly discovered Ω(2012)

被引：29
|
作者：
Aliev, T. M. [1 ]
Azizi, K. [2 ,3 ]
Sarac, Y. [4 ]
Sundu, H. [5 ]
机构：
[1] Middle East Tech Univ, Dept Phys, TR-06531 Ankara, Turkey
[2] Dogus Univ, Dept Phys, TR-34722 Istanbul, Turkey
[3] Inst Res Fundamental Sci IPM, Sch Phys, POB 19395-5531, Tehran, Iran
[4] Atilim Univ, Elect & Elect Engn Dept, TR-06836 Ankara, Turkey
[5] Kocaeli Univ, Dept Phys, TR-41380 Izmit, Turkey
来源：
PHYSICAL REVIEW D | 2018年 / 98卷 / 01期
关键词：
QUARK-MODEL; RESONANCE PHYSICS; BARYONS; QCD;
D O I：
10.1103/PhysRevD.98.014031
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Very recently, Belle Collaboration reported observation of a narrow state called Omega(2012) with mass 2012.4 +/- 0.7(stat) +/- 0.6(syst) MeV and width 6.4(-2.0)(+2.5)(stat) +/- 1.6(syst) MeV. We calculate the mass and residue of the Omega(2012) state by employing the QCD sum rule method. Comparison of the obtained results with the experimental data allows us to interpret this state as a 1P orbital excitation of the ground state Omega baryon, i.e., with quantum numbers J(P) = 3-\2.
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页数：6
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