Axial vector (JPC=1++) charmonium and bottomonium hybrid mass predictions with QCD sum-rules

被引：22

作者：

Harnett, D. ^{[1
]}

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

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

Jin, Hong-ying ^{[3
]}

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

[3] Zhejiang Univ, Zhejiang Inst Modern Phys, Hangzhou, Zhejiang, Peoples R China

来源：

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2012年 / 39卷 / 12期

基金：

加拿大自然科学与工程研究理事会;

关键词：

2-LOOP PROPAGATOR INTEGRALS; FEYNMAN-INTEGRALS; RESONANCE PHYSICS; QUARK MASSES; MESONS; DIMENSION; DIAGRAMS; SPACE; MODEL;

D O I：

10.1088/0954-3899/39/12/125003

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Axial vector (J(PC) = 1(++)) charmonium and bottomonium hybrid masses are determined via QCD Laplace sum-rules. Previous sum-rule studies in this channel did not incorporate the dimension-six gluon condensate, which has been shown to be important for 1(--) and 0(-+) heavy quark hybrids. An updated analysis of axial vector charmonium and bottomonium hybrids is presented, including the effects of the dimension-six gluon condensate. The axial vector charmonium and bottomonium hybrid masses are predicted to be 5.13 and 11.32 GeV, respectively. We discuss the implications of this result for the charmonium-like 'XYZ' states and the charmonium hybrid multiplet structure observed in recent lattice calculations.

引用

页数：11

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