JPC=1++ heavy hybrid masses from QCD sum-rules

被引：8

作者：

Kleiv, R. T. ^{[1
]}

Harnett, D. ^{[2
]}

Steele, T. G. ^{[1
]}

Jin, Hong-ying ^{[3
]}

机构：

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

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

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

来源：

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2013年 / 234卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

QCD sum-rules; heavy quark hybrids; RESONANCE PHYSICS; MESONS;

D O I：

10.1016/j.nuclphysbps.2012.12.003

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

QCD Laplace sum-rules are used to calculate axial vector (J(PC) = 1(++)) charmonium and bottomonium hybrid masses. Previous sum-rule studies of axial vector heavy quark hybrids did not include the dimension-six gluon condensate, which has been shown to be important in the 1(--) and 0(-+) channels. An updated analysis of axial vector heavy quark hybrids is performed, including the effects of the dimension-six gluon condensate, yielding mass predictions of 5.13 GeV for hybrid charmonium and 11.32 GeV for hybrid bottomonium. The charmonium hybrid mass prediction dis-favours a hybrid interpretation of the X(3872), if it has J(PC) = 1(++), in agreement with the findings of other theoretical approaches. It is noted that QCD sum-rule results for the 1(--), 0(-+) and 1(++) channels are in qualitative agreement with the charmonium hybrid multiplet structure observed in recent lattice calculations.

引用

页码：150 / 153

页数：4

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