Mass predictions for pseudoscalar (JPC=0-+) charmonium and bottomonium hybrids in QCD sum-rules

被引：22

作者：

Berg, R. ^{[1
]}

Harnett, D. ^{[1
]}

Kleiv, R. T. ^{[2
]}

Steele, T. G. ^{[2
]}

机构：

[1] Univ Fraser Valley, Dept Phys, Abbotsford, BC V2S 7M8, Canada

[2] Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK S7N 5E2, Canada

来源：

PHYSICAL REVIEW D | 2012年 / 86卷 / 03期

基金：

加拿大自然科学与工程研究理事会;

关键词：

RESONANCE PHYSICS; MESONS; EXCITATIONS; INTEGRALS; SPACE; MODEL; WAVE;

D O I：

10.1103/PhysRevD.86.034002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Masses of the pseudoscalar (J(PC) = 0(-+)) charmonium and bottomonium hybrids are determined using QCD Laplace sum-rules. The effects of the dimension-six gluon condensate are included in our analysis and result in a stable sum-rule analysis, whereas previous studies of these states were unable to optimize mass predictions. The pseudoscalar charmonium hybrid is predicted to have a mass of approximately 3.8 GeVand the corresponding bottomonium prediction is 10.6 GeV. Calculating the full correlation function, rather than only the imaginary part, is shown to be necessary for accurate formulation of the sum-rules. The charmonium hybrid mass prediction is discussed within the context of the XYZ resonances.

引用

页数：7

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