Hints for the existence of hexaquark states in the baryon-antibaryon sector

被引:27
作者
Abud, Mario [1 ,2 ]
Buccella, Franco [1 ,2 ]
Tramontano, Francesco [3 ]
机构
[1] Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy
[2] Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy
[3] CERN, Dept Phys, Theory Grp, CH-1211 Geneva 23, Switzerland
来源
PHYSICAL REVIEW D | 2010年 / 81卷 / 07期
关键词
MULTIQUARK HADRONS; DOMINANCE;
D O I
10.1103/PhysRevD.81.074018
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The discovery of some baryon-antibaryon resonances has led us to consider 3q 3 (q) over bar systems as possible candidates. We predict their spectrum in the framework of a constituent model, where the chromomagnetic interaction plays the main role. The relevant parameters are fixed by the present knowledge of tetraquarks. The emerging scenario complies well with experiment; besides the description of the baryon-antibaryon resonances, we find evidence for new tetraquark states, namely, the a(0)(Y) in the hidden strangeness sector and the Y(4140) and X(4350) in the cs (cs) over bar sector. A detailed account of the spectra and the decay channels is provided for future comparisons with data.
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页数:13
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