期刊
PHYSICAL REVIEW D
卷 86, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.86.034004
关键词
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资金
- Russian Foundation for Basic Research [10-02-00061a]
- noncommercial foundation Dynasty
- Russian Federation [MK-406.2010.2, MK-3513.2012.2]
In the current work, spectroscopy and the possibility of observation at the LHC of tetraquarks composed of four heavy quarks are discussed. The tetraquarks concerned are T-4c = [cc][(c) over bar(c) over bar], T-4b = [bb][(b) over bar(b) over bar], and T-2[bc] = [bc][(b) over bar(c) over bar]. By solving the nonrelativistic Schrodinger equation, masses of these states are found with the hyperfine splitting that is accounted for. It is shown that masses of tensor tetraquarks T-4c(2(++)) and T-2[bc](2(++)) are high enough to observe these states as peaks in the invariant mass distributions of heavy quarkonia pairs in pp -> T-4c + X -> 2J/psi + X, pp -> T-2[bc] + X -> 2B(c) + X and pp -> T-2[bc] + X -> J/psi Y(1S) + X channels, while T-4b is under the threshold of decay into a vector bottomonia pair.
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